This is the 1-1/8" bore insert with 7% reduction in power for our 1" tall body. SuperSprings SSR-148-40 SumoSpring Rear For Ford Bronco. Winters 3980C Forged Aluminum Direct Mount Front Hub Kit Silver.
Wehrs Machine WM301-1.125 1" Tall Bore Reduction Insert - 1-1/8" Diameter
Wehrs Machine WM301-1.250 1" Tall Bore Reduction Insert - 1" Diameter
Wehrs Machine WM301-1.450 1" Tall Bore Reduction Insert - 1.450" Diameter
Wehrs Machine WM302-1.250 2" Tall Bore Reduction Insert - 1-1/4" Diameter
Wehrs Machine WM301-1.0 1" Tall Bore Reduction Insert - 1" Diameter
