Seller notes

This listing is for a brand new 500 CC Big Bore Kit for the Honda TRX420 Rancher ATV year models 2007-2020.  It will work on all models of the TRX420 Rancher.  This kit will take your 420 to a 500 class ATV with greatly increased power.  This kit consists of all Genuine Honda products COMES WITH NEW OEM CYLINDER, PISTON, RINGS, WRIST PIN, CIR CLIPS, HEAD, BASE, VALVE COVER GASKETS.  THERE IS NO SPECIAL MACHINING REQUIRED, THIS ARE ALL BOLT ON AND RIDE PARTS! 07 08 09 10 11 12 13 1...

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