Prox Forged Piston kitRef : PRO00295A / 1095569002

PROX Forged Piston designed for off-road use. Made from a specific alloy of aluminum through forging, this piston aims to minimize friction and meet the demands of motocross. Suitable for engine reconditioning equivalent to the original equipment, it fits into the high-performance engines of the relevant 250 cm³ models to restore compliant clearances and tolerances.

• Manufacturer Ref: 01.2417.B
• Diameter: Ø 76.96 mm (oversize letter B)
• Compression: standard (13.5/1)
• Material: forged aluminum
• Segments: provided in kit (reference CP1612C)

Designed for the stresses of motocross, this piston withstands high temperatures and repeated cycles characteristic of off-road riding. The finish and choice of alloy facilitate break-in and contribute to stable piston behavior within the cylinder. Suitable for reconditioning operations and engine preparation interventions where pistons and segments are replaced.

Main compatibilities:

• YAMAHA YZ 250 F (CG40) — 2019 — 250 cm³
• YAMAHA YZ 250 F (CG39) — 2018 — 250 cm³
• YAMAHA WR 250 F (RE25) — 2018 — 250 cm³