This week we tackle the CRF 450X, CRF 250X, CRF 230L and Honda Progressive Steering Dampers. CRF450X $7399 After winning every Baja race it‘s entered, the CRF450X has established its racing credentials. This year, it gets better, with fine-tuning that includes a new Honda Progressive Steering Damper, chassis upgrades, and a slimmer fuel tank. SPECIFICATIONS Engine type: 449cc liquid-cooled single-cylinder Unicam four-stroke Bore and Stroke: 96.0 x 62.1 mm Compression ratio: 12:1 Induction: 40 mm Khein flat-slide Ignition: CD Transmission: Wide-ratio five-speed Final drive: #520 T-ring sealed chain; 13T/51T Front suspension: 47.0mm inverted Showa® cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4-inch travel Rear suspension: Pro-Link® Showa single-shock with spring preload, 13-position [low-speed] and 3.5-turn [high-speed] compression damping and 17-position rebound damping adjustability; 12.4-inch travel Front brakes: Single-disc with twin-piston caliper Rear brakes: Single-disc Front tire: 80/100-21 Rear tire: 110/100-18 Rake: 27.05 degrees Trail: 115 mm (4.5 inches) Wheelbase: 58.2 inches Seat height: 37.9 inches Ground clearance; 13.6 inches Curb weight: 269 lbs (Includes all standard equipment, required fluids and a full tank of fuel—ready to ride) Fuel capacity: 1.9 gallons Color: Red Model ID: CRF450X CRF250X $7599 The CRF250X starts with its CRF250R pedigree, adds electric start, wide-ratio gearing, new-for-2008 ignition timing, new brake rotors and a slimmed-down fuel tank. FEATURES & BENEFITS Engine/Drivetrain Chassis/Suspension Additional Features SPECIFICATIONS Engine type: 249cc liquid-cooled single-cylinder Unicam four-stroke Bore and stroke: 78.0mm x 52.2mm Compression ratio: 12.9:1 Induction: 37mm Khein flat-slide Ignition: CD Transmission: Wide-ration five-speed Final drive: #520 T-ring sealed chain; 13T/49T Front suspension: 47.0mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4-inch travel Rear suspension: Pro-Link Showa single-shock with spring preload, 13-position [low-speed] and 3.5-turn [high-speed] compression damping and 17-position rebound damping adjustability; 12.4-inch travel Front brakes: Single-disc with twin-piston caliper Rear brake: Single-disc Front tire: 80/100-21 Rear tire: 100/100-18 Rake: 27.54 degrees Trail: 4 inches Wheelbase: 58.3 inches Seat height: 37.7 inches Ground clearance: 13.4 inches Curb weight: 253 lbs (Includes all standard equipment, required fluids and a full tank of fuel—ready to ride) Fuel capacity: 1.9 gallons Color: Red Model ID: CRF250X CRF230L $4499 On paved roads or dirt roads, the all-new CRF230L is ready to handle all kinds of transportation needs. With its compact size, lower seat height, 223cc single cylinder engine and a six speed transmission, it will provide reliable transportation for years to come. Engine Type: 223cc air-cooled single-cylinder four-stroke Bore and stroke: 65.5 mm x 66.2 mm Compression Ratio: 9:1 Valve train: SOHC; two-valve Induction: 30 mm CV Ignition: CDI Transmission: 6-speed Final drive: #520 O-ring sealed chain Front suspension: 37mm leading-axle Showa fork; 9.5-inch travel Rear suspension: Pro-Link Showa single-shock with spring-preload adjustability; 9.0-inch travel Front brake: Single 240mm disc Rear brake: 220mm disc Front tire: 2.75-21 Rear tire: 120/80-18 Rake: 26.83 degrees Trail: 4 inches Wheelbase: 52.75 inches Seat Height: 31.9 inches Ground clearance: 9.5 inches Curb weight: 267 lbs (Includes all standard equipment, required fluids and a full tank of fuel—ready to ride) Fuel capacity: 2.3 gallons, including 0.7 gallon reserve Emissions: Meets current CARB and EPA standards. Color: Red Model ID: CRF230L
HONDA PROGRESSIVE STEERING DAMPER If you think you already know a lot about steering dampers, get ready to think again. The minds at Honda have created the Honda Progressive Steering Damper (HPSD), a new application of steering damper technology designed specifically to augment more aggressive turning characteristics rather than assist straight-line handling only, as has been the case with steering dampers in past applications. By Integrating HPSD, the 2008 CRF450R and CRF250R both demonstrate a higher level of front-end traction with significantly enhanced steering feel, specifically a more “planted” feel in turns for better front-wheel control, especially under dry, hard-packed track conditions. Net result: greater The earliest versions of HPSD first saw action aboard the American Honda Racing Team's CRF450R and CRF250R race bikes during the 2004 AMA For example, the change from 24mm of offset to 22mm alters the CRF450R's steering trail from 109.4mm on the 2007 model to 111.4mm for Moreover, while in mid-turn—and virtually everywhere else on the track—HPSD damps out a lot of the jarring that normally tries to deflect the front wheel. Subsequently the rider doesn't need to work as hard to hold a line. In the past, pulling 2mm from steering off-set and shortening wheelbase might have sacrificed handling, but with HPSD, riders get the best of both worlds: quicker steering and better handling, especially at higher speeds. HPSD consists of a very clever and very compact damper mounted behind the front number plate. Weighing a mere 6.5 ounces, it attaches to the lower To complement the addition of HPSD, the steering head was completely redesigned and re-tuned for correct flex/stiffness properties, and an HPSD In addition, Team Honda riders have discovered that use of HPSD allowed front suspension settings that were distinctly stiffer than had been the case without the steering damper. At work once again was the concept of the entire chassis being a highly tuned system, one that must be designed and With HPSD, the 2008 CRF450R and CRF250R feel just as stable through fast whoops as the 2007 model did with its more conservative fork offset, yet steering for both bikes is markedly quicker and easier on the rider. When the front end impacts an obstacle off-center and the handlebar begins to |