The Mittler Bros. Small Ford 9″ / 8″ / GM 10-Bolt Inner Puck is a precision-machined alignment puck used in rear-end narrowing applications. It slips over the Mittler Bros. 1-1/2″ jig shaft and seats inside the Small Ford 9″ / 8″ / GM 10-bolt bearing bore to ensure accurate, square, and true reinstallation of the housing ends after narrowing.
With a 2.890″ OD, these pucks fit the small Ford 9″, Ford 8″, and GM 10-bolt bearing bore — covering a wide range of popular rear-end housings commonly found in cars, trucks, and performance builds. Sold as a pair. Made in the USA.








