Hot Rods 4083 Heavy Duty Crankshaft Assembly for Honda CRF250R

The Hot Rods 4083 is a complete heavy-duty crankshaft assembly engineered as a premium OEM replacement for 2004-2009 Honda CRF250R dirt bikes. This factory-assembled crankshaft delivers exceptional performance and durability at a fraction of the cost of OEM cranks, making it the go-to choice for racers and serious riders.

Complete Assembly Ready to Install:

• Sold complete with proven Hot Rods connecting rods, top-end bearings, thrust washers, wrist pin bearings, and crankshaft webs
• Factory assembled and trued to OEM specifications for precise balance and smooth operation
• Meets or exceeds OEM performance and durability standards
• No additional parts needed—ready for immediate installation

Quality Construction:

• Gears manufactured to DIN Class 9 or higher quality standards
• Connecting rod side clearance: 0.40mm - 0.80mm for optimal operation
• Fully rebuildable with genuine Hot Rods connecting rods and bearings
• Forged steel construction withstands extreme stress and heat

Hot Rods has been manufacturing quality aftermarket crankshafts and connecting rods for over 25 years. Every crankshaft is precision-machined and dynamically balanced to reduce vibration and improve fuel efficiency. Main bearings and seals are sold separately for single-cylinder applications.

Alternate Part Numbers: 09210128, 16-4145, 0921-0128, 421-4083