Hi, my Tacoma is a 2006 TRD off road (4WD w/electric locker on the rear)
I want to re-gear to 4.88 but have found very difficult to determine which ring and pinion type do I need
I've contacted Richmond (Motive) and they replied the correct part numbers would be Rear- T488V6, Front- TAC488IFSL
The rear kit says it have a RG diameter of 7.8", and pinion diameter of 1.3785" 27 splines
The front kit says it have a RG 7.5” diameter and a pinion diameter of 1.378” 23 splines
On the yukon website per selected options looks like I need YG TV6-488 for the front which specifies 8.125" ring gear diameter, 27 spline pinion (no diameter measurement), and for the front yukon have two kits YG TLCF-488R-CS and YG TLCF-488R-CS-T, the last one with the T in the catalog string says to have a thick gear for 3.73 and down carrier (I believe we have 3.73 stock) these kits specify 8" ring gear diameter, 29 spline pinion
I've also contacted eastcoastgearsupply but they just responded with a link to the front/rear gear package, it doesn't give any specifications at all so I don't know which ring and pinion will be selected with these, plus being a lot more expensive (almost $1200) than just getting ring and pinion without all the bearings and seals...
How can these two brands have such a different kits and say these fit our vehicles, what ring and pinion diameter do we have from factory? how many splines is our pinions? this is getting very frustrating