Yamaha WR250F Forged High Compression Piston Kit - Vertex Pistons - 14.7:1 Compression - '20-'24. A factory-fit forged piston kit engineered for riders who want higher compression and reliable performance for WR250F models from 2020 through 2024.

This Vertex kit includes a forged piston, rings, wrist pin and circlips sized to match A, B or C cylinder bores for an exact fit. The 14.7:1 compression profile is designed to increase cylinder pressure within safe operating limits for tuned WR250F engines. Skirts are finished with a molybdenum disulfide (MoS2) coating to reduce friction during break-in and help extend piston life. The piston undergoes a T‑5 heat treatment hardening and tempering cycle for improved strength and durability under demanding off‑road conditions.

Features

• Forged Vertex piston, 14.7:1 compression ratio
• Piston kit includes piston, rings, wrist pin and circlips
• Exact fit options for A, B or C bore sizes to reduce blow-by and oil consumption
• MoS2 skirt coating for faster, lower-friction break-in
• T-5 heat treatment for enhanced strength and wear resistance

If you have questions or want help choosing the right piston size for your WR250F, call us directly — we’re happy to help. We offer installation and customization services at both of our locations: Austin, Texas and Los Angeles, California area. 512-982-9393 (TX) or 562-981-6800 (CA). If you’re considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov