New 6 speed dogbox for all 6 cylinder BMW, capable to hold lots of power. Middle plate with bearings to connect shafts, new surface and profile big teeth, clutch shaft made from special driveshaft steel, and additional transfer gears to adjust your top speed makes this gearbox one of the best products for your BMW. Suitable for any power turbo charged cars, drag, hillclimb, circuit, rally or any other motorsport discipline. It is designed to fit into 5 speed ZF S5D gearbox. Aluminium plate with NJ207 bearings makes this gearbox 52mm longer than stock ZF S5D and 50 mm shorter than 6 speed Getrag S6S.