Item fits Yamaha models:

YZ125 2002~2004

Item includes:

Crankshaft x 1

ø54mm Cylinder x 1 

Cylinder Headx 1

Power Valve x 2

Complete Top & Bottom End Engine Gasket kit x 1

CrankShaft Main Bearing & Oil Seal Kit x 1

Complete Top & Bottom End Engine Gasket Kit x 1

Replace OE P/N: 

Crankshaft: 5MV-11400-00-00, 5MV-11410-00-00, 5MV-11420-00-00

Cylinder: 5NY-11311-00-00 , 5NY-11311-11-00 , 5UN-11311-11-00 ,5UN-11311-00-00 , 5XE-11311-00-00 , 5XE-11311-21-00

Cylinder Head:5MV-11111-00-00

Power Valve: 5HD-1131D-20-00, 5HD-1132D-20-00

Piston Kit: 5NY-11631-00-A0, 5NY-11631-01-A0, 5NY-11631-00-D0, 5NY-11631-01-D0

Main Bearing & Oil Seal Kit: 93306-37204-00, 93102-20485-00, 93102-30008-00

Feature:

★ World Class Needle Roller Bearing

★ Improved oil canal design for bettering lubrication

★ Direct Replacement Parts

★ A390 aluminum alloy 

★ Hard Anodize on crown and side for ignition and combustion resistance

★ MoS2 Skirt coating reduce friction and improve wear

★ RIK Piston Ring: most well-know manufacturer in the industry

★ Cast piston has super-high silicone content for additional strength

★ Nachi Main Bearing Made In Japan

★ Best Taiwan Performance Oil Seal

★ Nikasil Plating Cylinder for bettering heat dissipation and low friction

★ Cylinder is machined and plating in Taiwan

★ Tighter tolerances for better Engine Performance

★ Better Heat Conductivity and low wear low friction

★ Much Durable