Pro-X Piston Forged Kit - 2018-2019 Yamaha YZ450F, YZ450FX, and WR450F

The PRO-X Piston Forged Kit is designed for unbeatable performance and longevity in the 2018-2019 Yamaha YZ450F, YZ450FX, and WR450F. It features precision-machined CNC parts, made from high-quality, low-expansion, low-friction piston alloy. With plated cylinders offered in standard and A, B,. sizes, allowing for increased re-boring possibilities and extended cylinder lifespan.

Features of the Pro-X Yamaha YZ65 piston:

• The smart solution; save money on engine repairs
• Manufactured in Japan and designed as OEM replacements
• Forged to meets or exceeds OEM specifications, then CNC machined to extremely close tolerances
• Available in standard sizes along with fractional increases in Standard (A) (B)
• Additional oversize available in .010 increments
• Kit includes piston, piston rings, wrist-pin, and circlips

**Some models include tin-based anti-friction skirt coating others may not**