HOT RODS 0921-0039 4149 Stroker Crankshaft Crankshaft Assembly – Stroker – Yamaha

Features

• Factory assembled and trued to OEM specifications
• Drop in replacement crankshaft requires no modification unless noted
• CNC machined and dynamically balanced to suit the increased stroke
• Add +2.00 mm to +4.00 mm of stroke depending on application
• Uses stock piston unless noted
• Main bearings not included
• Can be matched with Cylinder Works Big Bore cylinders to get significant displacement and horsepower gains
• Not re-buildable as the rods are shorter than OEM.

Specs

Part Notes

• Connecting rod side clearance is 0.25 mm – 0.45 mm.
• +3.00 mm stroke increase makes 264 cc.
• Uses stock piston.
• Bolt in and go.
• When using Cylinder Works big bore cylinder kit it will make 285 cc.

Fitment Disclosure

This quick reference fitment information is provided to direct you to our catalog information and the manufacturer’s information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.