In such cases, maybe the radiator fan is faulty. ... CRG Kawasaki Ninja 400 18-20 R/C Spectrum Clutch Lever. These bikes come with sensible power output, which is why they are described as “beginner bikes.”. Note: These prices may vary depending on factors such as mileage, region, demand, etc. This problem occurs mostly at high RPMs (between 8000 to 9000 RPMs). Purchase 2018 Kawasaki Ninja 400 Exhaust, Rearsets, Tires and Parts from SportbikeTrackGear.com. Moreover, the reliability of the Ninja 250/300/400 means they make for practical means of transportation. Poway, CA 92064. Once in place,  reach your finger under the clutch basket and locate the oil pump drive gear. 4.5 out of 5 stars 18. Install an R6 Throttle Tube – How to install an R6 throttle tube to shorten the throttle throw on your Ninja 400. Telephone: (858) 842-4595, Norton Motorsports In fact, many owners take their bikes for track meets. But if your bike is a 2018-2019 and your clutch begins to slip, you can replace the OEM pull rod with our Ninja400R Race Spec modified pull rod (which has been machined down with the necessary extra clearance) and get another .040″ of wear from your clutch plates before they will need to be replaced. A short demonstration of how slipper clutch in Dominar 400 works. This is one of the most prevalent problems facing Ninja 400 owners. There is no additional labor or tools necessary to install the 2020+ bearing since it is not pressed in. It all adds up to make the town work and B-road rides a hoot -think slightly more powerful 125cc sports learner motorcycle, and you’ll be spot on.”. It also helps build confidence, as riding a bigger bike could often mean higher chances of dropping the machine while riding. The sturdy Delrin spacer will absorb impact in the event of a crash to keep the shaft in place and protect your engine. With many less expensive motorcycles, including the Ninja 400, these drive dogs and receiving slots are square in shape, and can slip free under acceleration or deceleration, causing the transmission to involuntarily shift gears or find a place between gears called a “false neutral” where no gear is engaged. The Ninja 400 / Z400 is an awesome little bike with a fantastic engine. This alone doesn’t change anything, but they also changed the pressure plate bearing from an 8mm bearing to a 7mm bearing, increasing clearance by 1mm. Install race spec clutch upgrade kit – Clutch slipping, poor shifting, false neutrals, and dropping gears fixed and explained! UPDATE 4/22/2020, we overlooked it before but have now confirmed exactly what Kawasaki changed for 2020. 95. This causes the bike to lose speed abruptly and may lead to crashes. ***UPDATE*** Click here to jump to the 2020+ model year NINJA 400 and Z400 Pull Rod and Pressure Plate Bearing update. This will later affect the engine’s operation and lead to running issues. But what this means is that if you aren’t very deliberate with your shifts, you can pretty easily stop the shift roller on the rounded part of a point on the star between gears and easily put the transmission into a false neutral. Step 1. Unfortunately, when the clutch slips on deceleration, the friction plates will wear slightly as they spin against the steel clutch plates. Again, this accelerates clutch wear. The narrow friction plate in the back provides clearance for the OEM judder spring and seat. 99 $ 71. More about us. In this section, I’ll go through the tear-down and installation of all of the parts of our Race Spec Clutch Upgrade Kit. Some Kawasaki owners complain that engine temperatures on their bikes rise to dangerous levels. See below for location of the one bolt that is longer than the rest. 23510: Friction plates set ( … Install the Barnett Heavy Duty Clutch Springs and the spring plate and torque the spring plate bolts to 10Nm (89 inlbs) with a 10mm socket. To virtually eliminate false neutrals with the Ninja 400, we replace the OEM shift detent spring with our Heavy Duty Shift Detent Spring and replace the OEM shift star with our machined Race Spec Shift Star. Place some cardboard under the engine to catch any oil drips. Kawasaki issued a recall for bikes affected by the problem. Then remove the inner clutch basket boss (there’s a washer behind it), clutch basket and primary driven gear assembly, primary drive gear, spacer and tapered washer from behind the basket. they did change the pull rod which is supposed to make the plates stick together better but i think its more for allowing for more wear. Then secure the shift lever back on the shaft and tighten it in place. I recommend using the red spacers to start. Or you could have a technician look at the bike. We would love to hear your thoughts! This is labor intensive, but sometimes it’s the only solution and is considered mandatory by top level race teams. If you are installing a Yoyodyne 5 spring clutch, scroll down to instructions 12b below. Krace Motorcycle Clutch Brake Levers Set Fit For Kawasaki Z250SL 2016-2017,NINJA 250R 2008-2012,NINJA 300R/Z300 2013-2018 Ninja 400 2018,ERSYS 300X 2017 2018 w. 7/8" 22mm Rubber Handlebar Hand Grips 3.8 out of 5 stars 30 Step 11. Most diagnoses reveal the clutch lever to be the commonest cause of the issue. Be sure you do not drop any parts into the engine! If these parts are faulty, they may affect the flow of fuel in the bike and cause it to run rough. Step 7. Click HERE if you want to skip down to the How To Install the Clutch Parts section of this article. This eliminates the chance of friction in the cable making the problem worse and provides better feel of the clutch engagement at the lever. Kawasaki Clutch Assist Spring is designed to assist the clutch lever to return back to its normal resting starting point. It falls out easily when the pressure plate is removed. And the basket and pressure plate assembly has .836″ of clearance before it bottoms out when it is removed from the bike. You can increase the clutch pack thickness by replacing the 3 wide 2.0mm plates with 2.3mm thick plates, or a combination of 2.0mm and 2.3mm thick plates. There are issues. Some issues owners have associated with the slipping clutch problem include: Excessively high RPMs GP-0; Close; Yamaha. “Undercutting”, or “back-cutting”, is a process where these square shaped drive dogs and slots are cut at a small angle, so that when they are meshed together, the power applied to them actually forces them together and it’s impossible for them to slip free while under load. When you try to accelerate hard, the other set of ramps slams together, holding the clutch tight so it doesn’t slip under hard acceleration. If the bike has low miles, it is common for the gasket to remain stuck to the engine in excellent condition and be acceptable to reuse after this installation. We share projects and helpful information. When you downshift and decelerate quickly, the rear wheel tries to spin the engine up, and one set of these ramps slide together, releasing pressure from the clutch plates which allows the clutch to slip. As you increase the thickness of the entire clutch pack, you also increase the amount of clutch wear that is available before the basket or pull rod will bottom out. Motorcycle transmissions operate by a series of gears with drive dogs and/or slots that are engaged or disengaged when the gears are shifted. Our Race Spec Shift Star has reshaped, smaller and sharper points between gears so that the roller cannot accidentally stop on the point and must fall into the next gear’s notch. Kawasaki Ninja 400. View Entire Discussion (10 Comments) More posts from the Ninja400 community. You end up between gears with both gears disengaged. Step 3. According to them, this problem often takes the form of high idling (excessively high RPMs/shaking while idling). From complaints online, it seems the clutch on the Ninja 400s slips. Clean the bolt with brake cleaner and use high temperature thread locker on the bolt and torque to 12Nm (106 inlbs). This makes the bike feel very smooth for new riders as the bike decelerates with less engine braking feel than it would normally have. 10% savings 79. 99 $ 49.99 $ 79.99. How to remove the OEM bodywork of the Kawasaki Ninja 400, How to remove the gas tank on the Kawasaki Ninja 400, How to remove the front and rear fender of the Kawasaki Ninja 400, How to Install a Yoyodyne Slipper Clutch in the 2015 Yamaha R3, How to Install Hotbodies Race Bodywork on the 2015 Yamaha R3, Remove the kickstand and bypass the switch, How to remove the kickstand and bypass the kickstand switch on the 2015 Yamaha R3, How to install aftermarket clipons on the the 2015 Yamaha R3, How to replace the fork seals and fork oil in the 2015 Yamaha R3, How to install the Traxxion Dynamics Damper Rod Kit w/ Cartridge Emulators in the 2015 Yamaha R3, How to install a BMC or other high flow air filter in the 2015 Yamaha R3, How to remove and replace the front brake pads on the Yamaha R3 2015, Bleed the Brakes or Flush the Brake Fluid, How to bleed the brakes or flush the brake fluid on the Yamaha R3 2015, How to replace the front brake line with a stainless steel superbike brake line on the Yamaha R3 2015, Change to GP Shift Without Rearsets or Risers, Here’s a quick and dirty way to switch to GP Shift without changing the rearsets or using a riser plate on the Yamaha R3 2015, Get More Clearance to Install Lower Clipons, How to get more clearance between the dash and your banjo bolt with aftermarket clipons on the Yamaha R3 2015, How to do change the motor oil and oil filter on the Yamaha R3 2015, Remove the Emissions System and Install a Block Off Plate, How to remove the emissions system and install a smog block off plate on the Yamaha R3 2015, How to remove the front wheel from the Yamaha R3 2015, How to remove the rear wheel from the Yamaha R3 2015, How to remove the windscreen and upper fairing from the Yamaha R3 2015, How to remove the gas tank from the Yamaha R3 2015, How to remove the side fairings from the Yamaha R3 2015, How to take apart the tail section and how to remove the taillight of the Yamaha R3 2015. But there is another interesting byproduct of this slipper clutch design. Kawasaki also has available 1.6mm and 2.3mm thick steel plates for the 3 wide plates (which we have available for sale here). Riders report that they find it difficult to shift between gears on the Ninja 400. It is worthy to note that most owners reporting this problem live in typically high-humidity regions e.g., Texas. Fits your 2018 Kawasaki Ninja 400 ABS. Kawasaki Ninja 400 Exhaust Dyno Shootout. Then use a 5mm hex to remove the bolt and carefully remove the shift star. You are here. This will cause the clutch to “grab” all at once. To know if a leak is behind the running problems, spray WD40 around the vacuum lines and intake manifolds. Stiffer springs will hold the clutch together on deceleration until a higher force is applied by the rear wheel to slide the ramps together and compress the springs. fairly low cost upgrade. Remove the washer and wipe the shaft and seal clean. See the video below for help installing the pressure plate. Black spacers will allow the clutch to slip less for more engine braking. Step 4. Here’s an example of a false neutral that happened to me in a race right after the start going into turn 1. It must rotate as you seat it. Both will increase the air in the engine, causing it to run lean. A false neutral occurs when a rider switches gears, and the transmission does not engage the gears properly. Gently hold the boss with the clutch basket tool and tighten the center nut with a heavy duty impact gun. Gently clamp the clutch basket with a clutch basket tool to hold it in place and use a heavy duty impact gun with a 27mm socket to remove the nut in the center of the basket. As you shift from one gear to the next, the point on the star between each gear forces the roller to fall to the next notch and fully engage the next gear. Install an R6 Throttle Tube – How to install an R6 throttle tube to shorten the throttle throw on your Ninja 400. No matter how many Kawi dealers tell you it’s normal for your clutch to slip on a bike with only 500 miles, it isn’t. The details of the shifting problem vary among individual owners. The following are some disadvantages to these bikes: “Even with all its sporting potential, the Ninja 400 is a great all-round street bike, equally suited to prowling city streets or cruising the highway.”, “As well as its larger and more powerful motor it [the Ninja 300] has got a stiffer frame, plus new suspension, wheels, and clocks, pegs, and sharper bodywork. To remove the OEM shift change shaft, first remove the shift knuckle/lever from the shaft on the left side of the bike with a 10mm wrench. Step 12b (Install Yoyodyne 5 Spring Slipper Clutch). Definitely the most common issue with the Ninja 400 is that the clutch “wears out” and starts slipping during acceleration with very low miles on the bike, typically between 500-2000 miles. This reduced weight makes it easier for novice riders to control these bikes. At first glance the pull rod appears the same, since the flange is the same thickness, but under closer inspection, the pull rod is shorter from the bottom of the flange to the top of the T by 1mm. Install the OEM pull rod into the end of the input shaft and install Yoyodyne pressure plate. Using excessive force to remove this bolt can damage the shift forks inside the transmission, so be sure to heat the bolt to release the threadlocker first. Make sure the washer is installed on the input shaft, then install the clutch basket center boss and lock washer. So the first part of the solution is to install stiffer Barnett springs in the clutch. However, this doesn’t mean they are slouches, either. When you press the shift lever with your left foot, the shift change shaft contacts the shift star and rotates it to the next gear. Make sure the bearing is in place. This is one of the most prevalent problems facing Ninja 400 owners. Kawasaki Ninja 400. The OEM clutch configuration uses 5 friction plates, but 3 of them are narrower than the other 2. Approachable power, superb ergonomics and class-leading performance offer a smooth, manageable ride that's ideal for new riders while also alluring experienced riders. Torque spec is 132 Nm (97.4 ftlbs), however, be careful using a torque wrench on this nut, as you may easily damage the clutch basket with the basket holding tool. $35.53. In most cases, riders report that they can’t shift the gears on their bikes because of one problem or the other. $110.00 $64.95. Inspect the clutch cover gasket, replace if necessary, and reinstall the clutch cover. FXCNC Brake Clutch Levers for Kawasaki Z250SL 16-17, NINJA 300R Z300 13-18, NINJA 250R 08-12, VERSYS 300X 17-20, Ninja 400 18-20, Z250 13-14, KLX150S 09-13, Z125 Pro 15-20, KLX125 10-16 4.7 out of 5 stars 27 $29.99 $ 29. Follow directions for 12a if you are using the OEM clutch. Step 2. According to riders, the bike seems to emit a rattling noise while in motion. Photo by Kevin Wing. Our Protection Spacer is machined from Delrin to fit over the snap ring and install between the shift arm and the engine case on the left side of the bike. Remove bodywork from the right side of the bike covering the clutch cover. You can easily Google “Ninja 250 clutch lever noise” to see potential solutions to this issue. The heavier detent spring helps by applying more pressure on the shift arm and roller to force it past the points on the star into the next gear. Some issues owners have associated with the slipping clutch problem include: No one wants his/her bike to overheat while riding. Move the O2 sensor cable free from the cable clamp, and remove the clutch cover using an 8mm socket. First, the design of the Kawasaki Ninja 400’s slipper clutch uses two sets of ramps on the pressure plate and center boss of the basket. 2 new & refurbished from $32.44 ... 1 product ratings - NEW 2011 - 2016 GENUINE KAWASAKI NINJA 1000 CLUTCH CABLE 54011-0109. I can't seem to get the clutch (handle) or the clutch lever (engine) to "return" to the normal position "about 10 or 11 o'clock". Included with our Blueprinted Shaft is our Protection Spacer for the shift shaft. Owners of the Ninja 400 report that the problem occurs mostly when they shift between higher gears e.g., fourth, fifth, and sixth gears. So the Ninja’s plates will wear faster than a bike with more plates or more material. a new clutch and upgraded springs is $75 and fixes the problem. This is the intended “slipper” effect of the clutch. Ninja 250 / 300; Ninja 400 2018-Z400 2019-Close; Ohvale. $21.99 $ 21. Remove the two springs, spacer, and washer from the OEM shift change shaft and install them on the new Blueprinted shaft. Norton Motorsports GP Spec Kawasaki Ninja400R. What’s The Resale Value On the Ninja 250/300/400? 04-05 ZX1000 Ninja ZX-10R KG Clutch Pro Series Complete Clutch Kit KGK-8004K (Fits: Kawasaki Ninja ZX10R) 5 out of 5 stars (1) 1 product ratings - 04-05 ZX1000 Ninja ZX-10R KG Clutch Pro Series Complete Clutch Kit KGK-8004K Blueprinted Shift Change Shaft and Protection Kit, 2020+ OEM Clutch Pull Rod and Pressure Plate Bearing, How to: remove the OEM bodywork of the Kawasaki Ninja 400, How to: remove the front fender and rear fender of the Kawasaki Ninja 400. I’m going to go show you all of the issues in the OEM clutch and shifting mechanism, and then cover installation of our Race Spec Clutch Upgrade Kit as well as the installation of the Yoyodyne 5 Spring Slipper Clutch to fix these issues for your track or street bike so you can enjoy a long lasting, reliable clutch, and focus on riding. Reinstall the tapered washer and spacer on the input shaft. Make sure the shaft is correctly located with the spring and boss below the shift star, and then install the washer and snap ring/circlip on the shaft on the left side of the bike to secure the shaft in place. Make sure the snap ring is seated completely in the groove on the shaft so it is secure. If you replace all 3 2.0mm plates with 2.3mm plates, your clutch will barely slip at all, even under hard deceleration, and your cable adjuster will likely be all the way at the end of the adjustment, so pay attention and test it out if you want to try this. Rotate this gear and gently press on the clutch basket to be sure it meshes with the oil pump gear and seats all the way in place. This problem is caused by a defect in the bike’s design, which forces the clutch plates to wear out. ***2020 bikes STILL have the rest of the issues and STILL benefit from fixing the rest of the issues!***. Since the clearance issue we addressed with our modified pull rod was an interference between the input shaft, the pull rod, and the bearing, any of these 3 parts could be modified to solve the clearance. There is a dowel pin that locates the shift star on the end of the shift drum. The problem here is that when you install the clutch in the bike with the OEM pull rod, the pull rod actually bottoms out on the input shaft long before the pressure plate bottoms out. If the bike is left unused for extended periods, deposits build up. While this doesn’t affect performance significantly, it can be an annoying experience for riders. Lubricate all clutch steels and friction plates before installation and install the clutch pack and pressure plate. The shift change shaft is only held in place by a small snap ring and in the event of a left side tip over, can easily be forced free from the snap ring and into the engine causing damage inside the clutch and leaking oil. There are three problems acting together to cause this issue in essentially every Ninja 400 and Z400. Step 5. 201. Our Ninja400R Race Spec Clutch Upgrade kit includes the following parts to correct all of the issues with the poor shifting and OEM clutch: Additionally, for critical race applications, we recommend undercutting the transmission gears. Many people, especially beginner riders, love these bikes as they are cheap and easier to ride compared to the bigger sportbikes. CNC Adjustable Short Brake Clutch Levers For Kawasaki NINJA 250R 2008-2012 / Z250SL 2016-2017 / NINJA 300R Z300 2013-2017 / VERSYS 300X 2017/ Z125 pro 2017 / KLX125/D-TRACKER125 10-16 / KLX250/D-TRACK. Apart from making the ride uncomfortable, it can lead to larger problems within the engine. 99 Well from what you described is that the clutch is not engaging and has been a common issue on that model. The Yoyodyne clutch includes a new clutch pack with 6 heavy duty friction plates and 5 new 1.6mm thick OEM steel plates. I had a similar problem with my bike (2006 Ninja 250). Alternatively, the engine may perform erratically and cause the bike to shake or lurch while accelerating. This problem is caused by a defect in the bike’s design, which forces the clutch plates to wear out. Hey guys, new to this, I have a 2004 Honda 400ex, I took the clutch case off to time my machine and put it back on, now when I pull the clutch it will not engage, the lever has the usual play and it takes the usual strength to pull it in but it will not engage, please help, thank you. The clutch pull rod and some of the clutch plates may come out with it so pay attention. Blue CNC Shorty Brake Clutch Levers For Kawasaki Ninja ZX 6R 07-14 Control Hand (Fits: Kawasaki) 4 out of 5 stars (1) 1 product ratings - Blue CNC Shorty Brake Clutch Levers For Kawasaki Ninja … 95. See our other How To articles for directions on removing the OEM bodywork. How to install an R6 throttle tube to shorten the throttle throw on your Ninja 400. Install the machined Race Spec Shift Star the same way the OEM shift star was removed. Step 12a (Install OEM Slipper Clutch). I can reach down and push the lever back towards the back of the bike, and it's fine. Really silly for them to go to a assisted slipper on a 400cc bike. A motorcycle transmission uses the shift star to force the shift drum to rotate to specific points where each gear is fully engaged, defined by the notches between each point on the shift star. In this article, we will review some recurrent issues experienced by owners of the Ninja 250, 300, and 400 models. Careful not to drop the spacer or washer from the shaft into the engine/oil pan! The Ninja 400 provides plenty of bike for new riders to grow into. But this also means that the plates are constantly slipping over each other and gently wearing away. If the clutch cover gasket is damaged, torn, or peeling from removing the cover, it should be replaced with a new gasket. A Ninja 636 makes nearly double the power of a Ninja 650 and about three times the power as a Ninja 400. Especially so since I've installed upgraded springs to help delay this exact issue. What is transmission undercutting? While the Ninja 400 is a good bike, it is marred by widespread issues with the transmission. Get it as soon as Wed, Dec 30. 12925 Brookprinter Place, Suite 200 According to owners, the outer brake pads on the Ninja 300s wear out rapidly compared to the inner pads. Here are some advantages of the Ninja 250/300/400 bikes: Thanks to their low sticker price and improved ergonomics, these bikes are a good choice for anyone looking for affording city-friendly sportbikes. There are three problems acting together to cause this issue in essentially every Ninja 400 and Z400. Many people, especially beginner riders, love these bikes as they are cheap and easier to ride compared to the bigger sportbikes. Remove the 3 bolts securing the spring plate using a 10mm socket and then remove the clutch springs. Kawasaki makes some of the best sportbikes on the market. In more severe cases, the bike may stall permanently. Then, use a torch to heat the bolt securing the shift star in place. However, now that new OEM 2020 parts are available and inexpensive, we will be discontinuing our Race Spec modified pull rod and you can now purchase the updated 2020 OEM parts for your 2018-19 directly from us and save yourself some money! Only use a heavy duty impact gun. FZ-07 / MT-07 2015-2017; MT-03 2020-R3 2015-2018; R3 2019-Close; View All; Close; Norton Built Motorcycles. The slipper part I can understand but the assisted part is over kill. Much earlier than expected even with the poor clutch design that causes its notorious clutch problems. Step 10. I recommend using an impact gun to torque this nut. Luckily, there are many DIY fixes for this problem, mostly from other Ninja 250 owners. This is a widespread problem on the Kawasaki Ninja 250s, judging from the number of complaints about it. Loosen these bolts a little at a time since they are under spring pressure. Kawasaki knows about this issue and supposedly the 2020 bikes will have a modified pull rod from the factory (See Below for 2020 Update!). So even if you’re trying to be smooth, it’s very difficult to apply a lot of power during a start. This can extend the life of your clutch even more, but there is a trade-off of this. We may earn commissions through our links. From Kawasaki’s official report, the following causes the problem: As with other problems, Kawasaki issued a recall for bikes affected. But it is no secret by now that the Kawasaki Ninja 400 / Z400 has some issues with the clutch and shifting. It’s very easy to have the clutch cable adjusted improperly and not know about it since there’s essentially no feel at the clutch lever. Compared to their other Kawasaki cousins, the Ninja 250/300/400 are lighter. Remove the OEM shift detent spring from the shift detent arm and install the Heavy Duty Shift Detent Spring, then reinstall the arm into the engine. Then lean the bike over on the kickstand, or lean it against something sturdy if you have removed the kickstand. Then remove the clutch plates and keep them in order so you know how they came out. Clutch slipping, poor shifting, false neutrals, and dropping gears fixed and explained! I would insist that it's a faulty clutch. $32.44. Then use snap ring pliers to remove the snap ring securing the shaft in place. $109.95 $98.95. After shifting up into 4th gear, I downshift to 3rd as I enter the turn and the bike goes into a false neutral. In such cases, the bike acts as if it’s in Neutral, instead of shifting into the selected gear. Your email address will not be published. TLDR: N400 clutch keeps burning out wayy too early. Carefully remove the pressure plate. The problem here is that paw mechanism on the end of the shaft is poorly positioned and sloppily attached to the shaft. This can lead to the failure of the anti-lock brakes, which puts the rider at risk of a collision or crash. That means that instead of the .063″ of clutch wear that you should have, you only get about .024″ before the pull rod bottoms out and your clutch will slip! Install the white Delrin Protection spacer on the shaft with the relief facing toward the engine so it seats over the snap ring. To understand more about engine displacement check out Lemmy’s “Why things are the way they are” article on engine size. $5.30 shipping. They are typically not an essential part of clutch operation. In most cases, mechanics trace the poor engine performance on Ninja 250s to faulty carburetors. However, every bike has a flaw or two, and so do these Ninja models. All rights reserved. There are 1 narrow and 3 wide plates in the pack. Another tidbit of information regarding the clutch wear and clearance:  The OEM clutch pack uses 2.0mm thick steel plates. Fits your 2018 Kawasaki Ninja 400 ABS. Sportbike Track Gear is the #1 online eCommerce site for protective motorcycle apparel and performance parts. Every bike is a little different, and if the alignment is bad enough and there’s enough free play in the paw, the paw can actually slip off the drive dogs on the shift star, causing the shifter to temporarily jam, or the bike to miss-shift. Based on research, these are the most common problems associated with the Ninja 250, 300, and 400 models: Most owners report that their bikes run rough on occasions. The NEW Ninja400R Clutch Cable Spring kits create a more durable and responsive clutch engagement onboard of the Kawasaki Ninja 400. Clutch on the backside of the clutch basket and pressure plate 250/300/400 are lighter 400 models described is the... To control these bikes poor engine performance on Ninja 250s, judging from the OEM bodywork a. To emit a rattling noise while in motion R3 2019-Close ; Ohvale to them, the Ninja /. But the assisted part is over kill are under spring pressure long lasting effectiveness and increased reliability i downshift 3rd... 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