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About KB Performance Super-Duty Big Bore Piston Kits
KB Performance Super-Duty Big Bore Piston Kits
- Updates stock 107in. , 114in. or 117in. motor to 124in. or 128in. when using 4. 250in. big bore cylinders
- Valve pockets are designed to accept up to +4mm oversized intake and exhaust valves
- Type 3 hard-anodized crown offers corrosion resistance for alcohol-added fuels
- Type 3 hard-anodized top ring groove eliminates micro-welding of ring to the groove and gives a hard-flat surface for ring to rotate on
- OE-style round wire locks are easily installed
- Heavy-duty wrist pins with true. 9270in. diameter to fit rods correctly
- Line2Line AST skirt coating starts out with a near-zero wall clearance and through the break-in period hones the cylinders to produce the correct oil wedge, keeping the piston square to the cylinder for best ring seal and quiet operation
- Kit includes pistons, rings, pins and locks
- NOTE: Requires the separate purchase of 4. 250in. bore cylinders PART #0931-0823.
Warning: California Proposition 65