New for the 2005 Honda CRF450R:
- New fourth-generation twin-spar aluminum frame. Forged aluminum
steering head and tapered down-tube section are designed to optimize
frame rigidity. In addition, tall swingarm pivot plates and thin
frame spars create a narrow overall frame cross-section for superb
rider comfort and maneuverability.
- Semi-double-cradle frame design features a single, large-diameter
tapered down-tube. Two rugged box-section rails attach to the
base of the down-tube and support the engine. A forged aluminum
steering head provides a compact and extremely durable mount
for the frame spars and engine down-tube.
- New swingarm features a dual-axis, double-taper design with
a large cast aluminum cross-member that is lighter weight and
stronger.
- New shift drum, shift forks and shift fork shafts for more
precise shifting.
- New front and rear suspension valving for improved bump absorption.
- New front axle placement for improved fork action and turning.
- New Pro-Link ratio combined with 5.5 kg rear shock spring
for more compliant suspension action.
- New exhaust pipe heat shield made from titanium for weight
savings.
- New airbox and intake tube for more direct airflow and increased
power.
- New side number plate with built-in airbox vents for improved
air flow.
- New aluminum clutch cable bracket for lighter weight.
- New rear hub is stronger and lighter.
- New one-piece seat bolt for easier maintenance.
- New lighter rear brake pedal.
- New rear brake pad insulators for consistent braking action.
- New narrower radiators for improved rider ergonomics while
maintaining cooling capacity.
- New radiator hose routing for lighter weight and improved cooling.
- Overall weight reduced by 3.5 pounds.
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