Ken Roczen - His Bike

Posted on June 10, 2021

Pretty cool video from VitalMX on the bike of Ken Roczen. They talk to Team Honda HRC Mechanic Jordan Troxell about the Honda CRF450R that Ken Roczen is riding this outdoor season. With three out of four moto wins so far, things are looking good for Big Red. This is the first Lucas Oil Pro Motocross season that Kenny is riding this version of the Honda CRF450R, since he sat out last year's nationals.

Since its 2002 introduction, the CRF450R has become the benchmark motocrosser, and together with its limited-edition CRF450RWE sibling, it’s the top-selling 450cc MX model in the U.S. Nonetheless, Honda didn’t rest on its laurels for the 2021 model year, endowing the legendary machine with important updates aimed at improving power, handling and consistency. As usual, this model draws lessons from Honda Racing Corporation’s global race program. A production version of the factory machine campaigned by two-time World Champion Tim Gajser to the 2021 MXGP crown, and the basis for the motorcycle that Team Honda HRC riders Ken Roczen and Chase Sexton campaign this season, the 2021 CRF450R represents a significant step up from what was already an extremely capable race machine. 

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2021 Honda CRF250R

The machine that took Chase Sexton to the 2020 AMA 250SX East Region crown and Kyle Peters to the 2020 AMA Arenacross title returns for the 2021 model year, with strong power across the rev range and a low-center-of-gravity chassis layout that delivers nimble, stable handling. The CRF250R is the platform campaigned this year by Team Honda HRC riders Hunter and Jett Lawrence.

Machine Specs

MODEL2021 CRF450R
Engine Type449.7cc liquid-cooled 10º single-cylinder four-stroke
Bore x Stroke96.0 mm x 62.1 mm
Compression Ratio13.5:1
Valve TrainUnicam OHC, four-valve; 38 mm intake, titanium; 31 mm exhaust, steel
InductionProgrammed fuel-injection system (PGM-FI); 46 mm throttle bore
IgnitionFull transistorized
TransmissionConstant-mesh 5-speed return; manual
ClutchMultiplate wet, hydraulically actuated (6 springs, 8 plates)
Final drive#520 chain; 13T/49T
Front Suspension49 mm fully adjustable leading-axle inverted telescopic Showa coil-spring fork w/ 12.2 in. travel
Rear SuspensionPro-Link system; fully adjustable Showa single shock w/ 12.4 in. wheel travel
Front Brake2-piston caliper (30 mm, 27 mm) hydraulic; single 260 mm disc
Rear Brake1-piston caliper hydraulic; single 240 mm disc
Front TireDunlop Geomax MX33 80/100-21 w/ tube
Rear TireDunlop Geomax MX33 120/80-19 w/ tube
Wheelbase58.3 inches
Rake (Caster Angle)27° 7’
Trail114 mm
Seat Height38.0 in.
Ground Clearance13.2 in.
Fuel Capacity1.7 gal.
ColorRed
Curb Weight244 lbs. (includes all standard equipment, required fluids and full tank of fuel—ready to ride)
MODEL2021 CRF250R
Engine Type249cc liquid-cooled single-cylinder four-stroke
Bore x Stroke79.0 mm x 50.9 mm
Compression Ratio13.9:1
Valve TrainDOHC, four-valve; 33 mm intake, titanium; 26 mm exhaust, titanium
InductionProgrammed fuel-injection system (PGM-FI); 44 mm throttle bore
IgnitionFull transistorized
TransmissionConstant-mesh 5-speed return; manual
ClutchMultiplate wet (5 springs)
Final Drive#520 chain; 13T/48T
Front Suspension49 mm fully adjustable leading-axle inverted telescopic Show coil-spring fork; 12.0 in. travel
Rear SuspensionPro-Link system; fully adjustable Showa single shock; 12.4 in. travel
Front Brake2-piston (30 mm, 27 mm) hydraulic caliper; single 260 mm disc
Rear Brake1-piston hydraulic caliper; single 240 mm disc
Front TireDunlop Geomax MX3S 80/100-21 w/ tube
Rear TireDunlop Geomax MX3S 100/90-19 w/ tube
Wheelbase58.3 in.
Rake (Caster Angle)27º22'
Trail116 mm
Seat Height37.8 in.
Ground Clearance12.9 in.
Fuel Capacity1.6 gal.
ColorRed
Curb Weight237 lbs. (includes all standard equipment, required fluids and full tank of fuel—ready to ride)