APS StarterGear Reduction Of 4.4:1. 3.4 Horsepower Motor. Easily Handles 18:1 Compression. Improves Torque For Great Cranking. Provides Power For High Compression Engines. Ball Bearing Supported Armature/Pinion Gear. Downsized Design Helps Clearance Issues. Mount Can Be Clocked To Assist In Mounting.