High-quality Hot Rods Heavy-Duty Connecting Rod Kit designed for Yamaha WR250R (2008–2012), WR250X (2008–2011), and WR250F (2003–2013) models. This kit provides superior reliability and performance for demanding applications.

Features:

• Includes rod, crank pin, crank pin bearing, top-end bearing, and thrust washers.


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


• Advanced side scalloping and vent slots reduce high RPM bearing race distortion.


• Double-forged rods enhance grain flow and dimensional consistency.


• Shot-peened and double-honed for increased strength under heavy loads.


• Small ends feature double drilling for enhanced lubrication and cooling of the wrist pin bearing.


• Silver-coated thrust washers and crank pin bearings offer added lubricity and extended lifespan.

Technical Specifications:

• Big End Bearing (mm): 32 x 40 x 20.8


• Big End Bore (mm): 40.00


• Big End Width (mm): 21.00


• Center to Center (mm): 94.00


• Pin Diameter (mm): 32.00


• Pin Length (mm): 60.80


• Small End Bearing (mm): No Bushing


• Small End Bore (mm): 17.00


• Small End Width (mm): 17.00


• Washer Thickness (mm): Not Used

Cross-Reference OEM Part Numbers:

• Yamaha 3D7-11651-00-00

Vehicle Fitments:

• Yamaha WR250R (2008–2012)


• Yamaha WR250X (2008–2011)


• Yamaha WR250F (2003–2013)

Part Number: 56-858.HR