JE Pistons Yamaha YZ250F 14:50:1 77MM Bore Piston Kit

If you're rebuilding the top end of your 2014-2018 Yamaha YZ250F, a new piston is a key component. This piston kit from JE Pistons is built to meet the demands of a high-performance engine, offering a 14.50:1 compression ratio for a noticeable boost in power. JE Pistons is a well-known name in performance engine building, and this kit reflects their experience in creating durable, high-performance parts.

This particular piston is 77mm in bore size, which is the standard size for these YZ250F models, meaning it fits right into your existing cylinder. The 14.50:1 compression ratio is an updated spec that helps extract more energy from your fuel, leading to improved throttle response and overall power output. JE Pistons uses well-built materials and manufacturing processes to ensure this piston can handle the increased pressures and temperatures associated with higher compression.

When installing this piston, remember to follow the manufacturer's recommended clearance and lubrication procedures to ensure longevity. This kit is designed as a direct replacement for your stock piston, making the installation process straightforward for someone familiar with engine work.