Std Dome Top Pistons with 8.3:1 Compression Ratio. Fits Big Twin 1978-1984 with 1340cc Shovel Engine. - Keith Black Pistons Brake Pads * Fits OEM mid and

* Fits OEM mid and forward controls

S&S is offering T-Series engines for 1999-’06 big twins without fuel or ignition systems

* Effective voltage: DC 12 V

* Polished Caliper

* Looks great when paired with shorty prostreet front fender # KM-K59306 and rear fender # KM-K59437

Std Dome Top Pistons with 8.3:1 Compression Ratio. Fits Big Twin 1978-1984 with 1340cc Shovel Engine. - Keith Black Pistons Brake Pads * Fits OEM mid andFeatures & Benefits: * Bore = 3. 498 * 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 # 21990 80 Tech Tips: * 8. 3: 1 Compression Ratio with 117cc Head Chamber Volume. * Follow Ring End Gap & Piston to Cylinder Clearances as per the