The Currie RockJock® low 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 low pinion 44 gears only. These gears feature a larger ring gear than a standard 44 as well as a larger pinion gear. This is fully machined housing center center accepts 3" tubes and includes carrier caps and cap bolts only. NOTES: Accepts standard Dana 44 carriers.