Complete assembly with billet aluminum 4-link brackets, aluminum end bells, 35-spline aluminum spool, pro-gears, gun-drilled axles, MW disc brakes with carbon rotors and linings. 128 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. (SHOWN WOTH STEEL BRAKES)