The 2010 Honda CRF250R features fuel injection and has ditched the dual exhaust first seen on the 2007 model.
Already a dominating presence in the 250 MX class, the
Honda CRF250R joins the ranks of the fuel-injected motocrossers for 2010. And while Honda’s Programmed Fuel Injection (PGM-FI) highlights the 2010 CRF250R spec sheet, Honda has given its 250 thumper a working over, with the new engine also rolling on a redesigned chassis. Keen-eyed readers will also immediately note Honda has ditched its dual muffler exhaust, returning to a more conventional single-can system.
Honda claims a more compact 249cc Unicam Single powers the 2010 CRF, with lower center of gravity and better mass centralization. Honda’s Programmed Fuel Injection system (PGM-FI) delivers precise fuel/air mixture through the 50mm throttle body and 12-hole injector. The FI system promises improved response and quick starts.
The Honda CRF250R utilizes a 50mm throttle body with 12-hole injector for its new-for-2010 fuel injection.
Other engine changes for the 2010
Honda dirt bike include a more durable water pump and larger AC generator. The new mill also requires revised transmission ratios to “match engine power output.” As for the return to single-muffler exhaust, Honda claims it improves mass centralization (but weren’t the distinctive dual canisters supposed to provide superior balance?).
The chassis is revitalized for 2010 as well. First is the new twin-spar aluminum frame and forged aluminum steering head, with a slightly pared down spar height (70 to 66mm) and width (22 to 20mm). The frame allows a reduction of triple clamp offset from 22 to 20mm. The rear subframe is tweaked too, for a narrower profile and easier access to the air filter – the airbox also new and higher capacity.
Honda's Progressive Steering Damper returns, attached to the lower triple clamp and steering head. Honda promises improved overall handling and steering from the new front wheel position, 15mm closer to the engine.
Meanwhile, the 48mm Showa sticks up front and a single rear Showa shock take care of suspension duties. The front fork features 12.2-inches of travel and 16-position rebound/18-position compression adjustment. Sporting 12.6-inches travel, the shock is adjustable for preload, 20-position rebound, with separate high and low-speed compression.
A consistent dominator in our
250 Motocross Shootouts, will the 2010 Honda continue Big Red's winning streak?
The claimed 226-lb curb weight is nearly identical to the ’09’s 227-lb spec sheet weight. Not identical, however, is the MSRP – Honda PR announcing the new fuel-injected CRF250R to cost $7199, a $200 increase from 2009.
2010 Honda CRF250R Technical Specs
Engine Type: 249cc liquid-cooled single-cylinder four-stroke
Bore and Stroke: 76.8mm x 53.8mm
Compression ratio: 13.2:1
Valve Train: Unicam, four-valve; 30.5mm intake, titanium; 25mm 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
Front Suspension: 48mm inverted Showa 16-position rebound and 18-position compression damping adjustability; 12.2 in. travel
Honda has chosen to move to a single muffler exhaust system with their more compact PGM-FI equipped Engine.
Pro-Link Showa single shock with spring preload, 20-position rebound damping adjustability, and compression damping adjustment separated into low-speed (18 positions) and high-speed (1.5 turns); 12.6 in. travel
Front Brakes: Single 240mm disc with twin-piston caliper
Rear Brakes: Single 240mm disc
Front Tires: Dunlop 742FA 80/100-21
Rear Tires: Dunlop D756 100/90-19
Wheelbase: 58.8 in.
Rake (Caster Angle): 27° 9’
Trail: 116mm (4.56 in.)
Seat Height: 37.6 in.
Ground Clearance: 12.8 in.
Fuel Capacity: 1.5 gal.
Color: Red
Curb Weight*: 226 lbs.
*Includes all standard equipment, required fluids and full tank of fuel—ready to ride.
