Performance Mechanical Advance Kit For Big Twin & Sportster

Description

Weight: 0.33 Shaft and plate are stainless steel machined to exact tolerances Weights are heat treated and coated with high-tech polymers to ensure smooth even advance and retract movement Included springs are high quality phosphate coated spring wire that allows full advance @ 1400 RPM (same as OE) Hardened washers on advance weight pivots to prevent premature spring wear Pre-lubricated Rivera Mechanical Advance Kit Fits Big Twin 1970/1979 & Sportster 1971/Early 1979 Also fits aftermarket ignition system that requires a mechanical advance unit