Sidewinder Kits

1 products

Our range of Sidewinder Kits for Harley-Davidson covers complete S&S Sidewinder big-bore engine kits designed for 1970-1984 Shovelhead Big Twin models. Iron City Motorcycles in Leeds is an authorised Harley-Davidson dealer, and Sidewinder kits are the kind of engine-stroker upgrade our workshop sees on Harley-Davidson Shovelhead builds where a customer wants a significant capacity and torque increase while keeping the classic Shovelhead look. You will find S&S's Sidewinder Shovelhead kits, built in the United States and long established as one of the most respected performance upgrades available for a classic Harley-Davidson big twin. Whether you are building a road-going Shovelhead stroker, upgrading a daily-ridden 1970s FL bagger or completing a performance-focused restoration, the correct Sidewinder kit is here. Browse the full range below.

OEM Replacement Parts OEM Only — Active Genuine H-D & replacements Tap to clear filter Custom & Performance Aftermarket Only — Active Upgrades & Aftermarket Tap to clear filter
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