Keith Black Pistons KB305.STD Standard Dome Top Pistons w/9.6:1 Compression Ratio for Big Twin 84-99 w/Evolution Engine RS Nizo is available in

RS Nizo is available in 100% perforated leather for maximum ventilation without compromising on style

• Replaces OEM 4729

cruiser and touring motorcycles

• Includes 3-stud peak

Keith Black Pistons KB305.STD Standard Dome Top Pistons w/9.6:1 Compression Ratio for Big Twin 84-99 w/Evolution Engine RS Nizo is available inFeatures & Benefits: * Bore = 3. 498in. * 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