Keith Black Pistons KB410.STD Standard Flat Top Pistons w/9.1:1 Compression Ratio for Sportster 86-03 w/Big Bore 883cc to 1200cc ConversionFeatures & Benefits: * Bore = 3. 498in. * Stroke = 3. 812in. * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter piston to cylinder clearance. * Complete kit includes: two pistons, rings, wrist pins and clips. Tech Tips: * Piston is 0. 125in. below deck to achieve 9. 1: 1 Compression. * Follow Ring End Gap & Piston to Cylinder Clearances as per the supplied
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Keith Black Pistons KB410.STD Standard Flat Top Pistons w/9.1:1 Compression Ratio for Sportster 86-03 w/Big Bore 883cc to 1200cc Conversion