Yamaha FX Piston Kit - Wiseco - Forged Series - `08-`17 is a complete forged piston package for Yamaha FZR/FZS/FX/SHO models from 2008–2017. This kit provides a durable replacement piston sized to fit an 86.00 mm bore with an 8.6:1 compression ratio.

Wiseco’s Forged Series pistons are engineered for a range of 4-stroke applications including ATVs, dirt bikes, street bikes, snowmobiles, UTVs and V-Twins. The forged construction improves strength and service life under high-stress conditions and maintains consistent geometry for reliable combustion characteristics. This Yamaha-specific kit ships as a full install-ready package with the piston, wrist pin, rings and circlips included, reducing the need to source additional parts. It’s a practical choice for enthusiasts who want a robust, serviceable replacement that matches common bore and compression specifications for these model years.

Features

• Forged 4-stroke piston construction for improved strength
• Complete kit: piston, wrist pin, rings, and circlips included
• Fits Yamaha 2008–2017 FZR / FZS / FX / SHO
• 86.00 mm bore, 8.6:1 compression ratio
• Suitable for both street and off-road 4-stroke applications

If you have questions or need help confirming fitment, call us directly or stop by—our knowledgeable staff can assist with selection, installation, and minor customization. We offer installation and customization services at two locations in Austin, Texas and the Los Angeles, California area. Call us: 512-982-9393 (TX) or 562-981-6800 (CA). If you plan to purchase multiple items, contact us for possible shipping discounts. We install on premises at both locations.

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