Description & Size Guide
Stroker CrankshaftFactory 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 0.30 mm - 0.55 mm.
Heavy-duty +4.00 mm increased engine stroke makes 379 cc.
Requires use of Stroker piston.
Includes:
• Crankshaft
• MAG Crankshaft BearingYamaha YFM 350 2004 Yamaha YFM 350 R 2005-2013 Yamaha YFM 350 X 1989-2004 Yamaha YFM 350 X MNH 1991-1997
This item fits to following bikes.
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