+.020in. Dome Top Pistons with 8.3:1 Compression Ratio. Fits Big Twin 1978-1984 with 1340cc Shovel Engine. - Keith Black Pistons Oil Lines & Fittings & Mount H/ware tching Throttle Cable # MS-43254

tching Throttle Cable # MS-43254

* Blue Lattice stitch (LS) retro styling infuses the old school spirit with a modern day twist

designed to increase torque band width and increase fuel economy

* Plug and play

sissy bars or as a side frame mount)

+.020in. Dome Top Pistons with 8.3:1 Compression Ratio. Fits Big Twin 1978-1984 with 1340cc Shovel Engine. - Keith Black Pistons Oil Lines & Fittings & Mount H/ware tching Throttle Cable # MS-43254Features & Benefits: * Bore = 3. 518 * Stroke = 4. 250 * 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 # 21992 80 Tech Tips: * 8. 3: 1 Compression Ratio with 117cc Head Chamber Volume. * Follow Ring End Gap & Piston to Cylinder Clearances as per the