Harley Davidson Single Fire Ignition Ultima 53-660 for EVO Motors normal Harley ignition fires twice in one rotation when it shouldnt ! It only needs to fire every two rotations on compression stroke! allows a far greater spark too- This ignition has kickstart facility so no more ankle breaking and huge spark only when needed adjustable maps and rev limits Ignition advamce curves comes complete with coil new leases and easy instructions ! Also we keep. Daytona Twintec Crane S&S Thunderheart Single and dual fire units Plus nitrous controllers Big motor upgrades Left and right side transmissions see or call. Custom Cruisers see www.CustomCruisers.com and go to Ultima in left menu ! Or call to order. Mike on 01773835666 If you're interested in this product, call Mike on 01773835666. To download a PDF brochure containing all Ultima Midwest Motorcycle parts, click this link