Arctic Cat M8 SPI Pistons Bearings Gaskets Top End Rebuild 2007 2008 2009 M 800

BRAND NEW TOP END REBUILD KIT. INCLUDES (2) SPI PISTONS, RINGS, WRIST PINS, CIRCLIPS, WRIST PIN NEEDLE BEARINGS, AND A TOP END GASKET KIT. PISTONS ARE FOR THE STANDARD BORE (85mm).

SPI PISTONS FEATURE THE FOLLOWING. High-silicon content Hypereutectic cast aluminum material for less heat expansion, tighter clearances, increased hardness, longer life and reduced scuffing.

Features machined, smooth piston crowns for reduced carbon buildup, increased horsepower and fuel economy. Hard anodized crowns are 75% stronger than non-anodized, providing minimal expansion and reducing the chance of cold seizures when combined with Teflon/Molybdenum coated skirts. MOS2 (Teflon/Molybdenum) coated skirts perform at the highest standards, reducing friction and heat for added power and longevity.

SPI rings match and interchange with the OEM design.