Fits 2012 – Current Models T4 & 2014 Current T2 Models  JBS clutch mods lowers the starting ratio in high, low & reverse from a dead stop, it gets the tires turning easier.  Fixes the reverse issue of not enough power & helps the entire range.  It lowers the cab noise because it shifts out earlier on top end.

Customer must send in their complete primary & secondary sheave assemblies to be modified.

JBS Performance
131 Davis Ct.
Mount Hope, WV 25880

Please call with any questions!!

Clutch/Belt break in – run it easy for the first 4 or 5 miles to make sure the sheaves are clean before you punch it.