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 0.45 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 SealYamaha YFZ 350 1987-2006 Yamaha YFZ 350 LE 2003-2004 Yamaha YFZ 350 MNH 1991-1997 Yamaha YFZ 350 SE 2005-2006 Yamaha YFZ 350 SP 2006
This item fits to following bikes.
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