Wiseco 4840M04750 Piston Kit 47.50mm Bore 0.50mm Oversize 11:1 Compression for Yamaha TTR90 & TTR90E (2000–2007) – Forged Piston w/Rings, Pin & Clips

Upgrade your engine performance with the Wiseco 4840M04750 Piston Kit, designed for Yamaha TTR90 and TTR90E models.This piston features a 47.50mm bore with a 0.50mm (.020") oversize and an 11:1 compression ratio, delivering improved power, torque, and overall engine efficiency.Constructed from high-strength forged aluminum, Wiseco pistons are engineered to handle increased compression and demanding riding conditions, ensuring long-lasting durability and reliability.Key Features:47.50mm bore, 0.50mm / .020" oversized piston11:1 high-compression design for increased performanceForged construction for superior strength and durabilityImproved heat resistance and wear performanceComplete kit: piston, rings, wrist pin, and clipsFitment:2000–2007 Yamaha TTR902000–2007 Yamaha TTR90EPart Number: 4840M04750Whether you're upgrading for better performance or rebuilding your engine, this Wiseco piston kit delivers the durability, power, and reliability your Yamaha TTR90 demands.

HIGH-COMPRESSION UPGRADE (47.50MM BORE, PART #4840M04750) – 0.50mm / .020" oversized piston with 11:1 compression ratio for increased power, torque, and engine efficiency

COMPLETE PISTON KIT INCLUDED – Includes piston, rings, wrist pin, and circlips for a full top-end rebuild solution

FORGED HIGH-PERFORMANCE CONSTRUCTION – Built by Wiseco for superior strength, heat resistance, and long-lasting durability

PRECISION FIT FOR YAMAHA TTR90 MODELS – Designed for Yamaha TTR90 and TTR90E (2000–2007) for reliable fitment and easy installation

ENHANCED ENGINE PERFORMANCE – Improves compression, throttle response, and overall engine output for trail riding and recreational use