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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
• Not Waterproof
• 40% more pressure volume than stock
* Kit Includes Front & Rear Cylinder Lifter Covers & Two Base Gaskets
* 4 Stage Internal Filtration System
Fits Big Twin 1965-1982
Keith Black Pistons KB305.030 +.030" Dome Top Pistons w/9.6:1 Compression Ratio for Big Twin 84-99 w/Evolution Engine • Not WaterproofFeatures & Benefits: * Bore = 3. 528in. * Stroke = 4. 250in. * 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: * 9. 6: 1 Compression Ratio with 80cc Head Chamber Volume. * Follow Ring End Gap & Piston to Cylinder Clearances as per the supplied Manufacturers
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