Hot Rods Crankshaft Stroker Yamaha 4111

Stroker Crankshaft

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.

Connecting rod side clearance is 0.45 mm - 0.85 mm. +4.00 mm stroker crankshaft increase with +5.00 mm longer rods makes up to 403 cc. Requires Vertex long rod pistons and Vertex gasket kit when using OEM cylinder heads. Kit Includes: • Crankshaft • Connecting Rods • Crankshaft Bearings • Labyrinth Seal