BOYESEN Water Pump Impeller - Yamaha YZ250FIncreases water flow and reduces hydraulic friction for a cooler, more consistent temperature Reduces power loss in the final stages of a race Extends the life of the engine

Impact-resistant plastic shell

Stainless steel mid pipe and head pipe

Easy access oversized external sleeve pocket for goggles lenses and tear offs

Yamaha WRF250/450 03-04

Ratchet waist closure

exhaust gasket

Spare Parts : Piston 9242DA – Piston Rings : 264350 - Top engine gasket : 602111

Industry-leading Five-year warranty

Athena offers the widest range of replacement engine gaskets available on the market

it provides riders the ability to use their left hand to drag the rear brake in cornering situations for better line setup and control

Forged piston for stud cylinder

Velocity Flow Ventilation™ system with FlowAdjust ™