This is the Motor for the DuraTrax Kwik Pit Super Starters. FEATURES: 540 size Replaces worn or damaged motors INCLUDES: One Motor for the DuraTrax Kwik Pit Super Starters REQUIRES: Diassembly of case, installing new motor and attaching leads SPECS: Specs such as power and RPM not provided by manuafacturer Can Diameter: 1.4" (35.7mm) Length: 1.96" (50mm) Shaft Diameter: .12" (3.2mm) COMMENTS: Super Starter requires two motors jxs 02/28/07 ir/jxs