HONDA CRF450R (2011) specifications
Long regarded as the bike of choice in the big-bore motocross division, the 2011 CRF450R incorporates improvements that will help this bike retain its premier standing. The prodigious powerband is now even stronger thanks to more low-end pull and midrange grunt along with enhanced throttle response via a new throttle body. Revised suspension linkage and settings yield improved control, increased ride plushness and enhanced rear-wheel traction. A new Honda Progressive Steering Damper (HPSD) produces even better tracking traits than before, and a new muffler meets the 94-decibel sound level required by some racing organizations in 2011. All this and more make the 2011 CRF450R a shoo-in to maintain its dominant role among open-class MX bikes.
Motocross is a battle, and you’d better bring your “A” game whenever you show up—either that, or be prepared to eat a bucketful of roost. But when you’re on a 2011 Honda CRF450R it’s everyone behind you who’ll be savoring that dirt-flavored banquet. Why? Because we’ve given the CRF450R some serious upgrades.
First, the 450 gets a new throttle body, new fuel injector, and new ECU mapping so the engine makes more low end and midrange torque, and also offers even better throttle response. The power is easier to control, but without any loss of top end—better than ever for intermediate and expert riders alike. And our chassis designers were just as busy, updating the CRF450R subframe and taking the opportunity to fine-tune the subframe's stiffness. A new rear shock link and lower shock mount for improved front/rear balance and better suspension action especially over square-edged bumps.
And finally, new 2011 AMA rules state that every MX bike will have to meet the new 94 decibel rule. Both our CRF450R and CRF250R do that easily, thanks to a new exhaust system that works in conjunction with the new FI settings. So while the other guys might just change a muffler, that’s just where we started. And the first time the gate drops, it’s gonna show.
How bad do you want to win in 2011?
The 2011 CRF450R is upping the ante in the open class. First, its revised fuel injection system lets it deliver the kind of predictable power you need with an engine this strong, while the new throttle body and ECU mapping fatten up the midrange and bottom end, making the CRF450R easier to ride. New suspension settings along with the new bottom link give you a more plush ride and a more controlled feeling, while the revolutionary HPSD (Honda Progressive Steering Damper) continues to give you the most responsive and best handling bike on the track—you’ll own the turns, and that’s where races are won.
How you can make the world’s best MX bike even better.
The HRC Fuel-Injection Setting Tool lets you fine-tune your CRF450R's fuel injection for specific track conditions. Just click on the link below, and you'll get all the information you need.
A Winning Program.
Programmed Fuel Injection optimizes fuel/air delivery to seamless perfection, and with new-for-2011 ECU programming, the CRF450R’s performance is more responsive and more potent than ever.
More Control. Less Effort.
Developed by our factory racing team, the Honda Progressive Steering Damper is lightweight, compact and enhances cornering ability while reducing rider fatigue.
2011 Honda CRF450R Features
New for 2011
•Revised engine tuning and new 46mm throttle body increase low-end and midrange power and give improved throttle response.
•Front fork features a lighter cartridge cylinder and all-new valving for improved control and increased ride plushness.
•Revised shock valving yields improved control and increased rear wheel traction.
•New suspension linkage produces improved chassis balance and increased rear wheel traction in rough-track conditions.
•Honda Progressive Steering Damper (HPSD) features larger piston diameter (20mm to 24mm) for improved tracking traits.
•Redesigned muffler lowers sound emissions to 94 dB.
Rear Suspension - The rear suspension gets a new linkage to help give the CRF450R better handling and tracking, and a more balanced suspension performance. The fully adjustable Pro-Link® rear suspension sports an exclusive KYB® integrated reservoir, and a large 50mm rear shock damper for improved suspension action under the toughest riding conditions.
Batteryless Fuel Injection - The CRF450R was our first MX bike with fuel injection, and it's always been the standard in the class. For 2011 we've made it even better, by giving it a new throttle body and new ECU programming for crisper throttle control and even easier starting.
Lightweight Aluminum Frame - The CRF450R's race-inspired twin-spar aluminum frame revolutionized MX chassis tech when it first appeared in 1997 on the radical CR250R and has continued to do so every year since. Our latest frame boasts optimized torsional and lateral rigidity with minimized weight and maximum durability, ensuring razor-sharp handling performance. The updated subframe for 2011 takes the concept even further.
449cc Unicam® Engine
Works-Style Brakes - Honda's MX bikes have always had great brakes on the track, and the 2011 CRF450R continues that tradition. Discs front and rear with factory-spec master cylinders help haul you down fast, so you can outbrake the other guy into the turns.
Front Suspension - Kayaba front suspension features a sophisticated inverted Air-Oil Separated (AOS) system with an exclusive Honda 48mm-diameter fork, adjustability for rebound and compression damping, and 12.2" of travel. New-for-2011 settings match it up to the new rear suspension.
Honda Progressive Steering Damper - We've taken the revolutionary HPSD and made it even better for 2011 by giving it a bigger 24mm piston. You get more damping when you need it, but the HPSD operation is still completely transparent when you don't.
94 dB Exhaust System - The CRF450R's new silencer teams with the bike's revised fuel-injection throttle body and injector to help fatten up the low- and midrange.
USA MSRP $8,199. Available in Red beginning October 2010. USD
Engine Type: 449cc liquid-cooled single-cylinder four-stroke
Bore and Stroke: 96mm x 62.1mm
Compression ratio: 12.0:1
Valve Train: Unicam, four-valve; 36mm intake, titanium; 30mm exhaust, steel
Induction: PGM-FI, 50mm throttle body
Ignition: Full transistor with electronic advance
Transmission: Close-ratio five-speed
Final Drive: #520 chain; 13T/48T
Suspension Front: 48mm inverted KYB Air-Oil-Separate (AOS) with rebound and compression damping adjustability; 12.2 inches travel
Rear: Pro-Link KYB single shock with spring preload, rebound damping adjustability, and compression damping adjustment separated into low-speed and high-speed; 12.5 inches travel
Brakes Front: Single 240mm disc with twin-piston caliper
Rear: Single 240mm disc
Tires Front: 80/100-21
Wheelbase: 58.7 inches
Rake (Caster angle): 26° 54'
Trail: 114.5mm (4.5 inches)
Seat Height: 37.6 inches
Ground Clearance: 13.1 inches
Fuel Capacity: 1.5 gallons
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