Upgrade To Strange 35 Spline S-Trac
For Ford 9" Center Section


Part Number: OPRF10

Upgrade For New 9″ Center Section Order
Equipped With Differential

From Clutch Type Posi Unit – N1970F / N1970H

To Strange 35 Spline S-Trac – N1980

This product is only available from an Authorized Strange Dealer or Factory Direct Call - 800-646-6718 or Email Us


Upgrade to 35 spline Strange S-Trac helical gear differential