15-1/8" centers. Includes a 35-spline aluminum spool, aluminum end bells, aluminum 4-link brackets and spacers, pro gear, gundrilled axles, Timken® bearings, studs, and MW drilled steel brakes. 138 Lbs.

There are many items that can be interchanged to get your specific wheel to wheel width (from 33" to 36" and 38" to 42") and / or 4-link center dimension (18", 19", or 21"): Inner 4 link brackets, outer 4 link brackets, spacers, and end bells. To order, please collect your dimensions (4-link center, wheel-to-wheel, and bolt pattern), then call 1-866-508-6394 or contact us to place your order.