The Currie RockJock® high pinion 44 housing center is an all new, heavy duty center made 100% by Currie. Our casting is a heavy duty, ductile iron piece that uses the larger JK high pinion 44 gears only. These gears feature a larger ring gear than a standard 44 as well as a 29 spline Dana 60 size pinion gear. TJ/XJ/JK upper control arm bushing ear is cast onto the center but can be removed upon request. This is fully machined housing center accepts 3" tubes and includes carrier caps and cap bolts only. NOTES: This housing center weighs 58lbs. where a stock JK high pinion 44 front housing center weighs 34lbs. Accepts high ratio Dana 44 carriers only!