Heavy-duty connecting rod kit designed as a high-quality replacement for the Yamaha YZ250F. Manufactured from premium materials and engineered for superior strength and performance, this kit ensures durability under demanding conditions. The advanced design minimizes high-rpm bearing race distortion, and precise construction delivers reliable operation.

Features:

• Complete kit includes rod, crank pin, crank pin bearing, top-end bearing, and thrust washers.


• Made from hot-rolled ASTM 4115 steel and case-hardened to 58-62 Rc for exceptional durability.


• Side scalloping and vent slots reduce high-rpm bearing race distortion.


• Double-forged construction improves grain flow and ensures dimensional consistency.


• Shot-peened and double-honed rods offer superior strength under heavy loads.


• Double-drilled small ends enhance lubrication and cooling of the wrist pin bearing.


• Silver-coated thrust washers and crank pin bearings for improved lubricity.

Technical Specifications:

• Big End Bearing (mm): 30x38x17.8


• Big End Bore (mm): 38.00


• Big End Width (mm): 17.97


• Center to Center (mm): 93.50


• Pin Diameter (mm): 30.00


• Pin Length (mm): 54.80


• Small End Bearing (mm): Bushing


• Small End Bore (mm): 16.00


• Small End Width (mm): 14.95

Cross-Reference OEM Part Numbers:

YAMAHA: 5NL-11651-00-00, 5NL-11651-10-00

Vehicle Compatibility:

• 2001 Yamaha YZ250F


• 2002 Yamaha YZ250F

Part Number: 56-873.HR