+.020in. Flat Top Pistons with 9.0:1 Compression Ratio. Fits Sportster 1986-2021 with 1200cc Engine & Sportster 1986-1987 with 1100cc Engine. - Keith Black Pistons Air Cleaner Elements - All * Anchoring hardware is the

* Anchoring hardware is the same for all windshields and fairings for each bike

* In-molded throttle tube with integrated application specific throttle actuation

* Replaces OEM # 40210-85 # 40250-94

* Magnum Lower lines are not available for ABS Trikes

+.020in. Flat Top Pistons with 9.0:1 Compression Ratio. Fits Sportster 1986-2021 with 1200cc Engine & Sportster 1986-1987 with 1100cc Engine. - Keith Black Pistons Air Cleaner Elements - All * Anchoring hardware is theFeatures & Benefits: * Bore = 3. 518 * Stroke = 3. 812 * 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. * Replaces OEM # 22220 88A Tech Tips: * 9. 0: 1 Compression Ratio with 69cc Head Chamber Volume. * Follow Ring End Gap & Piston to Cylinder Clearances as per the