Pinion Shim - 0.005 to 0.015 in Pinion Depth Shims - Ford 9 in - Kit
The Mark Williams 12" Modular is the only rear end in drag racing that offers a warranty on gear sets
That is how confident we are in the strength of our rear end
Every racer wants reliability and consistency, there is no better way to do it than with a modular rear from MW
Shipping cost is based on weight. Just add products to your cart and use the Shipping Calculator to see the shipping price. We want you to be 100% satisfied with your purchase. Items can be returned or exchanged within 30 days of delivery.