*New Product* Replacement straight cut gearkit for MT75 Sierra/Escort Cosworth models. As mentioned above this gearkit uses straight cut gears for maximum strength and less transmission losses but still retains synchromesh for road friendly gear changes. Straight cut gears do tend to whine but we have found these to be no noisier than some other helically cut gear kits. We have been assured the gears will withstand 600+ hp type engines and their associated torque. We have been testing this product in a 605hp 4x4 Cosworth and after several track days and a session at Santa Pod we have noted no problems so far. The price does not include building the gearkit into a gearbox, but this service is available at extra cost. Click on the details button to see a picture comparing the standard shaft to the uprated version. Gear ratios: 1st 3.6 2nd 2.13 3rd 1.38 4th 1.00 5th 0.863 Alternative 5th 0.812