1987-2002 Yamaha SR 125 4T AC 150cc Cylinder Piston Kit 5VL-E1310-00 5VL-E1181-00

Includes:
57mm Cylinder, Forged Piston, Piston Rings, Piston Pin, Circlips, Top End Gasket Kit

Fits Models:
Yamaha SR 125, YBR 125, XT 125, XTZ 125

Model Years:
1987 - 2016

Submodels:
SR 125, YBR 125, XT-R 125, XT-X 125, XTZ 125

Engine Options:
4T 125cc (Upgradable to 150cc), AC 150cc

Description:
Complete 57mm cylinder piston top-end rebuild kit for Yamaha SR 125, YBR 125, and XTZ 125 models. Includes aluminum cylinder with cast-iron jacket, forged anodized piston, rings, pin, clips, and full gasket set. Restores compression and performance when cylinders blow through or pistons seize. Big-bore 150cc upgrade option available. Durable performance materials ensure reliability. Requires carburetor re-tuning for optimal performance.

Features:
¥ Aluminum cylinder with internal cast-iron jacket for superior cooling
¥ Anodized forged piston for heat resistance and extended lifespan
¥ Complete top-end gasket kit with performance materials
¥ 57mm bore x 59mm stroke with 15mm steel piston pin
¥ Direct fit for Yamaha 125cc models (1987-2016)
¥ Optional 150cc big-bore upgrade for increased displacement
¥ Resolves low compression, blown cylinders, and piston seizure issues