According to the Jeep Spec sheet, the C635 Six Speed Manual has a first gear ratio of 4.154 and a final drive of 3.833 - this gives the 1.4t a crawl ratio of 15.92:1. This is well short of the claimed 20:1 for the Trail Hawk. Has anyone heard of an aftermarket differential gear set to change the axle gear ratios? It would be great to get closer to the 20:1 crawl ratio with a 1.4 turbo.
I would love this! That or just make 1st a granny gear and run 2nd-6th like a 5 speed, kind of like how the Trailhawk's "4WD Low" is now.