Seller notes

Namura Piston For YAMAHA YFM250 BRUIN 2005-2006 STD Bore STD Comp Bore Size: 70.95mm Size Over Standard: Standard Compression: 8.7:1 STD Comp Important: THE PISTON DOES NOT HAVE A MACHINED SMOOTH DOMEIncludes: Piston, rings, circlips, pinMachined smooth piston crown (unless otherwise noted) to reflect combustion heat while reducing carbon buildupHard anodized piston crown with a hardness of HRB 105MOS2 coating to draw heat through piston walls and out the bottomMinimized piston expansion and con...

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