Honda CRF250R Piston Kit - Wiseco - 13.9:1 CR - `18-`19 is a direct-fit forged piston kit designed for the 2018-2019 CRF250R (and CRF250RX 2019). This complete kit supplies the components needed to refresh or modify your top end with a higher compression option.

Built from Wiseco’s forged material, this piston kit is intended to provide improved durability under high-stress conditions while maintaining compatibility with the stock platform. The 79.00 mm bore piston raises compression to 13.9:1 and is supplied as a complete package to simplify installation. It’s well suited to riders and builders who want a proven OEM-replacement forged piston with known fitment for the listed model years without guessing about missing hardware.

Features

• Fits Honda CRF250R 2018-2019 and CRF250RX 2019
• 79.00 mm bore, 13.9:1 compression ratio
• Forged piston construction for strength and wear resistance
• Complete kit includes wrist pin, piston rings, and circlips
• Designed to match stock geometry and installation procedures

If you have questions or want help confirming fitment, call us directly — we’re happy to assist. We have two service locations offering installation and customization: Austin, Texas and the Los Angeles, California area. Call us at 512-982-9393 (TX) or 562-981-6800 (CA). If you’re considering 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