Product Description

KB PERFORMANCE Piston Kit – 4.250″ +0.005″ – 11.8:1 CR – 124″ Big Bore – 107″ M8

Key Features

• Updates stock 107″, 114” or 117” motor to 124” or 128” when using 4.250” big bore cylinders
• Valve pockets are designed to accept up to +4.00 mm 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 0.9270” 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
• Requires 4.250″ bore cylinder sold separately.

Technical Specifications

• Weight: 3.20 lbs
• UPC: 800745276162
• Supplier Number: KB595LCA.005
• Unit of Measure: Kit

Current Warehouse Inventory

Stock by Location:

• ✓ Janesville, WI: 6 units
• ✗ Batavia, NY: 0 units
• ✗ Dallas, TX: 0 units
• ✗ Fresno, CA: 0 units
• ✗ Reno, NV: 0 units
• ✗ Asheville, NC: 0 units
• ✓ National: 6 units

Total Available: 12 units