27-3/8" (with 4-link), for 33-3/4" wheel to wheel width, tubular tie bar. Symmetrical brake mount pattern.

20" (with 4 link), for 37" wheel to wheel width, tubular tie bar, for floater axle kit, symmetrical brake mount pattern

20" (with 4 link), for 37" wheel to wheel width, tubular tie bar, for flange axles, symmetrical brake mount pattern

17-1/4" 4-link centers, for 34" wheel to wheel width, 1/4" steel 4-link brackets, tubular tie bar, for flanged axles, symmetrical brake mount pattern

17-1/4" 4-link centers, for 34-5/8" wheel to wheel width, 1/4" steel 4-link brackets, tubular tie bar, for foater axle kit, symmetrical brake mount pattern

Modular 9" aluminum 4-link housing with steel end bells welded to 3" chromoly steel tubes

16" wide center modular housing. Includes studs, nuts, and washers. No brackets or end bells.