We have Yukon Grizzly Lockers for Ford 9" Differential with 28, 31 or 35 spline axles. Mechanical positive-locking differentials have been the staple for drag racing, circle track racing, off-road use and a variety of other performance applications for decades. We now offer the Grizzly Locker, the latest in locking differentials. The Grizzly Locker features a forged case, 8620 internals and a patent pending design which reduces common locker failures. These units provide maximum traction and strength for many performance applications. Grizzly Lockers are available for a variety of car & truck applications, with new applications being added all the time! Assembled in the USA!
Fitment:
- 1955 Ford Thunderbird
- 1956 Ford Thunderbird
- 1957 Ford Thunderbird
- 1958 Ford Thunderbird
- 1959 Ford Thunderbird
- 1960 Ford Thunderbird
- 1961 Ford Thunderbird
- 1962 Ford Thunderbird
- 1963 Ford Thunderbird
- 1964 Ford Thunderbird
- 1965 Ford Thunderbird
- 1966 Ford Thunderbird
- 1967 Ford Thunderbird
- 1968 Ford Thunderbird
- 1969 Ford Thunderbird
- 1970 Ford Thunderbird
- 1971 Ford Thunderbird
- 1972 Ford Thunderbird
- 1973 Ford Thunderbird
- 1974 Ford Thunderbird
- 1975 Ford Thunderbird
- 1976 Ford Thunderbird
- 1977 Ford Thunderbird
- 1978 Ford Thunderbird
- 1979 Ford Thunderbird
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