Designed to For Jet sprint LS engines, This allows for the engine to be lowered as low as possible in the boat and replaces the factory 1.2 kw starter with a reverse drive 1.8 kw reduction starter, Still mounted low in the boat but easy to access unlike the factory unit. A std 1310 series driveshaft will bolt straight on to the flywheel. We can customize the kit to suit any setup Kit includes, all bolts including new crank bolts New High torque starter CNC Starter mount kit CNC Flywheel with 275mm ring gear