The Hot Rods Crankshaft Assembly 4138 is a precision-engineered replacement for Yamaha dirt bikes. It features a Hot Rods connecting rod and is factory-assembled and trued to within .001 for optimal performance. This assembly is completely rebuildable and does not include main bearings.

Features:

• Factory-assembled crankshaft with Hot Rods connecting rod.


• Precision trued to within .001.


• Fully rebuildable for extended service life.


• Ready to install for reliable performance.

Included Items:

• Crankshaft Assembly.


• Top End Needle Bearing (18x22x22).

Cross-Reference OEM Part Numbers:

• Yamaha: 5UP-11400-00-00


• Yamaha: 5UP-11400-10-00

Vehicle Compatibility:

• Yamaha YZ250: 2003–2020


• Yamaha YZ250X: 2016–2020

Part Number: 56-186.HR