Motorcycles 2021 Kawasaki KX450 Review First Ride

Kawasaki was the first manufacturer out of the gate to host a 2021 bike test with its KX450. We joined Team Green at Glen Helen Raceway in San Bernardino, California, to shake down its mildly updated flagship motocross bike, which has won Dirt Rider’s 450 Motocross Shootout the past two years.

© Provided by Cycle World Riding the 2021 Kawasaki KX450 at Glen Helen Raceway in San Bernardino, California.

© Provided by Cycle World The new Renthal Fatbar 839-bend handlebar makes it easier to get over the front of the bike, which is especially helpful when cornering.

The changes made to the KX450 for MY21 include a new coned disc-spring hydraulic clutch, larger-diameter clutch plates with a revised friction material, a new dry film lubricant coating on the piston skirt, and the switch to a Renthal Fatbar 839-bend handlebar, which is 1-1/8 inches in diameter and the same bar and bend that comes stock on the 2019 and 2020 Honda CRF450R.

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The Kawasaki KX 450 motorcycle returns as the flagship model in the Kawasaki KX lineup for 2021 and boasts several new updates to maintain its edge as the

Lee takes the latest version of the game changing Kawasaki KX 450 for a test to see what has changed for this years release of this racing staple. First Ride 2021 Kawasaki KX 450 - Motocross Action Magazine - Продолжительность: 10:36 motocross action magazine 67 909 просмотров.

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© Drew Ruiz Riding the 2021 Kawasaki KX450 at Glen Helen Raceway in San Bernardino, California.

Compared to the 2019–2020 KX450′s Renthal 7/8-inch-diameter, 971-bend handlebar, the 2021 model’s Renthal Fatbar 839-bend bar is 6mm lower, has 11mm less rise, and 2mm less sweep. The only similarities the two Renthal handlebars share in terms of dimensions are their width at 802mm.

2021 Kawasaki KX450 Engine

© Provided by Cycle World The KX450 receives a few engine updates for 2021 in the form of a new coned disc-spring hydraulic clutch, larger-diameter clutch plates with a revised friction material, and a new dry film lubricant coating on the piston skirt.

With its crisp throttle response, the KX450 gets up and goes, which is especially noticeable when exiting corners. This combined with its plentiful bottom-end power and nearly effortless clutch pull makes it easy to manipulate the power at low rpm, even when riding a gear high. The engine continues to pull into the high rpm long enough that we didn’t have to upshift to third when climbing most of Glen Helen’s smaller hills. Since Kawasaki granted the KX450 a hydraulic clutch in 2019, we have praised it for its remarkably easy lever pull, and the changes made to it for 2021 give it an ever lighter feel at the lever.

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The 2019 Kawasaki KX 450 is a “ first -year model” that might need a little more aging before it can take center stage, but it has good bones to build on. Every MXA test riders likes the 2019 KX 450 , but it’s not completely ready for prime time as it rolls off the assembly line. Maybe next year.

2021 Kawasaki KX450 Suspension

© Provided by Cycle World Very few clicker changes, if any, are needed to get most test riders comfortable with the Showa 49mm coil-spring fork and Showa shock. They are fantastic.

No changes were made to the KX450′s Showa 49mm coil-spring fork and Showa shock for 2021. The components have remained the same since the KX450 enjoyed a complete overhaul in 2019, which is great because the front and rear suspension work excellently. The Showa components offer a plush yet progressive feel throughout the stroke, which isn’t hampered when making clicker changes in one direction or the other. Both of our test riders—one a former AMA Pro Supercross racer and the other a novice-level motocross rider—made no more than two clicker changes on the fork compression and were able to find a comfortable setting they were happy with.

© Drew Ruiz The new Renthal Fatbar 839-bend handlebar makes it easier to get over the front of the bike, which is especially helpful when cornering.

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2021 Kawasaki KX450 Review First Ride

2021 Kawasaki KX450 Review First RideThe changes made to the KX450 for MY21 include a new coned disc-spring hydraulic clutch, larger-diameter clutch plates with a revised friction material, a new dry film lubricant coating on the piston skirt, and the switch to a Renthal Fatbar 839-bend handlebar, which is 1-1/8 inches in diameter and the same bar and bend that comes stock on the 2019 and 2020 Honda CRF450R.

So how did the 2020 Kawasaki KX 450 fair in my 450 Shootout? I 'm going to break it down a bit more in-depth to tell you what my group found. Give Works

2021 kawasaki KX 450 first ride video. Mxa retro test: complete test of the 2005 ktm 250SX. In a nod to handling, the MDK KX 450 F used Ride Engineering 22mm offset triple clamps (although for WORCS racing there is less urgency in cornering, so the stock 23mm clamps

With its stock 5.0 Nm fork and 54 Nm shock spring rates, the recommended weight range for the 2021 Kawasaki KX450 is 160 to 180 pounds. We have found this to be a very balanced setup for the majority of test riders. For those who weigh 175 pounds or more and pro-level riders who come in at the higher end of the recommended weight range, we have experimented with adding an optional, one-rate-stiffer spring of 5.2 Nm in one of the fork legs and leaving the other with the stock 5.0 Nm spring, effectively giving the fork a spring rate of 5.1 Nm, which Showa does not offer. This minimizes bottoming under large impacts for heavier riders, but doesn’t take away from the fork’s plush feel. It’s worth noting that we have been able to set the shock sag at the recommended 104mm setting with the stock 54 Nm spring rate for riders up to 190 pounds as well.

2021 Kawasaki KX450 Chassis/Handling

© Provided by Cycle World Kawasaki has dropped its prior Renthal 971-bend handlebar in favor of a Renthal Fatbar 839-bend bar, which is 6mm lower, has 11mm less rise, and 2mm less sweep than the outgoing 7/8-inch bar.

For the past two years, the KX450 has had the best chassis in its class. While it’s too early to tell whether it will retain that accolade, being that it’s the first MY21 450cc motocross bike we’ve tested this year, we wouldn’t be entirely surprised if it did. The KX450 not only offers neutral handling characteristics, the frame also does an excellent job of working with the suspension to absorb impacts, yet retains a firm enough feel to respond well to rider input. Kawasaki’s current generation flagship motocross bike has a long list of positive qualities, but its chassis may very well be its standout feature.

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First and foremost, is the 2014 KX 450 F better than the 2013 KX 450 F? A: No, and it isn?t all that different from the 2011, 2012 or 2013 KX 450 Fs, either. The most note-worthy difference over the last four years has been the addition of the Kayaba PSF air fork for 2013??14.

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© Provided by Cycle World The KX450’s frame has an excellent rigidity balance. Its compliancy enables it to help the suspension absorb impacts, yet it’s firm enough to allow for precise handling.

The KX450′s ergonomics are excellent with a slim profile from front to rear and a flat seat that is easy to move forward and back on. We commend Kawasaki for changing one of the few complaints we had about the 2019–2020 KX450—the handlebar. We felt the prior Renthal 971-bend bar was too high and threw off the bike’s otherwise-good rider triangle. With the new Renthal Fatbar, the rider triangle is noticeably improved as its lower height puts you in more of a neutral position while riding. One of our few minor complaints about the KX450 is that its 250mm rear brake rotor is a little touchy and makes it too easy to lock up the rear brake at times.

© Provided by Cycle World One of our few complaints about the current generation KX450 is its 250mm rear brake rotor. It’s a bit touchy and makes it too easy to lock up the rear brake at times.

2021 Kawasaki KX450 Overall Impression

© Provided by Cycle World The KX450 gets up and goes due to its crisp throttle response.

With its crisp throttle response, plush suspension, phenomenal chassis, and agreeable ergonomics, the current-generation KX450 has a lot going for it. Team Green has a well-rounded package for its flagship motocross bike and it heads into the 2021 450 Motocross Shootout with a lot going for it; only time will tell if it can make it a three-peat this year.

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© Provided by Cycle World The current generation KX450 has a lot going for it. An even easier clutch pull and a better-proportioned rider triangle make it even better in 2021.

Gearbox

Helmet: Shoei VFX-EVO

Goggle: 100% Armega

Jersey: Fox Racing 360

Gloves: Fox Racing 360

Pant: Fox Racing 360

Boots: Fox Racing Instinct

2021 Kawasaki KX450 Tech Spec

© Drew Ruiz The KX450 receives a few engine updates for 2021 in the form of a new coned disc-spring hydraulic clutch, larger-diameter clutch plates with a revised friction material, and a new dry film lubricant coating on the piston skirt.