Winters Lower Shaft Sprint Internal Coupler Speed Pro This box is 30% stronger

This box is 30% stronger than the OEM box and utilizes the latest technology with a smooth needle bearing design

State Of The Art Hedder Design

8-1/4 x 8 in

Chemical and UV resistant

reservoir provides plenty of fluid capacity

Winters Lower Shaft Sprint Internal Coupler Speed Pro This box is 30% strongerProduct Description: Lower Shaft 10 30 Spline 10. 34 in Long Internal Coupler Steel Winters Sprint Midget Quick Change Sold Individually 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.