Winters Ring & Pinion 8-3/8" 3.78 Ratio Performance Accessories provide a slight improvement in

provide a slight improvement in fuel efficiency

Ford / Mercury 1984-2004

Induction hardened and precision machined steel billet gears for bullet proof durability

2002-2016 Ford F-250 Super Duty

The complex and diverse nature of Energy's proprietary Hyper-Flex(TM) material requires constant attention to developing the optimum polyurethane formulas

Winters Ring & Pinion 8-3/8" 3.78 Ratio Performance Accessories provide a slight improvement inProduct Description: Ring and Pinion 3. 78 Ratio 9 Spline Pinion Winters Competition K305 Midget Quick Change For more than 60 years, Winters Performance Products has been producing high performance rear ends and driveline components for racing and street use. Their product offering includes everything from quick change gear sets to shifter assemblies, as well as many components specifically for the sprint car market. Winters Performance is undeniably