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Day Motor Sports will be closed Thursday and Friday for the Thanksgiving Holiday. All orders placed after 3:00PM (Central) Wednesday thru Sunday evening will ship on Monday, December 1st.
Pro-Tek Ring and Pinion Gears are manufactured to spec. for Day Motor Sports in the same factory as many popular differential gears on the market. These quality gears are the result of years of design and manufacturing improvements and are heat treatment hardened for improved racing performance. Pro-Tek Ring and Pinion Gears are available for 7.5” GM 10-bolt, 8.5” GM 10-bolt, and Ford 9” rear ends.
Some items in your cart have been adjusted due to availability.
© 2025 Day Motor Sports
All Rights Reserved
Website by GroupM7 Design™
6100 US Highway 69 N
Tyler, Texas 75706
M-Th: 8:30 am - 5:30 pm (CT)
Fri: 8:30 am - 3:00 pm (CT)
Sat-Sun: Closed