Single Fire Electronic Ignition Module - Programmable Part 53-644 for Harley Evolution, Shovelhead, Ultima & Revtech (Compatible with 1970-1999 Big Twin / 1971-2003 Sportster Carb Models)
✔INSTANT PERFORMANCE RECOVER. Experience sharper throttle response, smoother acceleration, and improved fuel efficiency with Vanlison's precise spark delivery – feel the difference on every ride!
✔️ PERFECT FIT FOR CARBURETED HARLEYS: Direct bolt-on replacement compatible with 1970-1999 Harley Big Twin (Evolution, Shovelhead) & 1971-2003 Sportster models (excludes 1200S Sport & ALL EFI Models)
✔️EASY PLUG & PLAY INSTALL: Get back on the road fast! No complex tools or cutting required – this true plug-and-play module is designed for a straightforward DIY swap of your old ignition
PROGRAMMABLE PRECISION: Features advanced programmable spark timing for smoother idling, increased power output, and enhanced rideability tailored to your bike.
Built to last with durable components. Backed by Vanlison 90-day worry-free warranty + technical support. If you have any installation questions, please contact us directly.