CRANKSHAFT ASSY YFM350 WARRIOR, Must Use Vertex Piston 23616A, HOTRODS 8-4143 YAMAHA ATV

The Hot Rods Heavy-Duty (+4mm Stroke) Crankshaft Assembly 4143 is a performance-oriented replacement for Yamaha YFM350R Raptor and YFM350X Warrior models. With a +4mm stroke, it increases displacement to 379cc, providing enhanced power and torque. This crankshaft is factory-assembled, trued, and ready for installation, ensuring precision and reliability. It requires the use of the Vertex Stroker piston (23616A) for proper compatibility.

Features:

• Heavy-duty crankshaft assembly with a +4mm stroke for increased displacement (379cc).
• Factory-assembled and trued to within .001 inches for accuracy and balance.
• Includes Hot Rods connecting rod, MAG (LH) crank bearing, and inner crankshaft webs.
• Completely rebuildable for extended service life.
• Ready for installation, delivering hours of dependable performance.
• Requires Vertex Stroker piston (23616A) for compatibility.

Compatible Models:

Yamaha YFM350R Raptor (2004–2013):

• 2004 Yamaha YFM350 Raptor
• 2005–2013 Yamaha YFM350R Raptor
• 2005–2007 Yamaha YFM350RSE Raptor Special Edition
• 2007 Yamaha YFM350RSE2 Raptor Special Edition 2

Yamaha YFM350X Warrior (1987–2004):

• 1987–2004 Yamaha YFM350X Warrior

Part Number: 56-208.HR.4mm