Purchasing Information: After you place your order on this site, we will contact you to confirm your order details prior to payment being made. All orders will be processed and fulfilled by one of our authorised dealers. Rollies Speed Shop Distribution is a wholesale business and does not sell directly to the general public. For more info see the Purchasing Information page.
* Reliable Easy Starts on any engine using stock starter.
* Save your starter and battery, automatic no buttons to push.
* Designed for 88ci-106ci Engines with 9.7 to 10.5 Compression & Ported heads – Massive Horse Power & Torque Increases, best results 3500 – 6000rpm.
* Designed for 106ci-124ci Engines with 9.1 to 10.0 Compression & Ported heads – Massive Torque & Horse Power Increases, best results 2500-5500rpm.
* Designed as a Bolt-in on Twin Cam 2005-2017, but should always be validated by the Assembling Technician.
Tech Tips:-
* Twin Cam 2012up engines feature Automatic Compression Release (ACR) as standard equipment, S&S EZ Start cams will work but the factory ACR’s must be disconnected.
* Check Crankshaft run-out using JimÂ’s Tool # JM-785.
* S&S Crankshafts are available where run-out exceeds Specification.