QR Code Link to This Post NEW! S&S 124" SUPER SIDEWINDER "PLUS" - Polished Finish with IST Ignition, NEW NEW NEW... out of the crate. This is not to be confused with the standard Sidewinder, this is the beefed up version from the factory (Paid $9500 for it). No comparison in it's class!S&S 124" polished finish Engine patterned from S&S Pro Stock 160" record-setter. Designed to replace stock Harley-Davidson® Evolution® big twin engines in 1984-'99 chassis. Also used for new builds and in American Iron Horse Big Dog, Saxon, and many other bikes. This is a single cam design engine which has a similar configuration to stock, it's just bigger and badder. Utilizes Hi-Performance crankshaft featuring 1.5" diameter pressed-in crank pin for superior strength Massive 4-1/8" bores with a stroke of 4-5/8" High-performance oiling system, high-flow cylinder heads and added cooling fins are state-of-the-art for optimum horsepower and torque Includes installed electric compression releases 124" Dyno tested at 130+HP at the rear wheel Evo-style mounting Features S&S Super G carburetor Includes S&S 640G camshaft Super Sidewinder Plus/31-0024L Comes with MSO and manual.$5995 FIRM cash, no trades.