Ring and Pinion Excel 3.73 Ratio 30 Spline Pinion 3 Series 8.5/8.6 in GM 10-Bolt Kit Review

These parts are well packaged. Tolerances were pretty decent, gear depth clearly marked for easy tuning. I would buy them again if needed.

Had it for over a year and a half, city, highway and even a little off-road, and about 15,000 miles. Absolutely no problem.

Thank you for this product. It arrived quickly and was exactly what I was looking for and needed. We will be ordering parts from you shortly.

Fast delivery, good packaging, easy installation and very quiet gearbox. There's no reason to spend more than it's worth - good value at just over a hundred dollars!

These gears fitted according to the manufacturer, new bearings, new racing pattern right on and correct play. The result is noisy gears! When I checked and rechecked 3 times, they pulled out the old ones and installed them. Ideal! Will never buy Richmond again

are very smooth, used old washers, screwed in tight, and old used screws, lock washers are not a good idea, need to be changed , they will not tighten, will not break out a washer, Small screw head, wrong size bearing, wrong size gear screw and washer, otherwise I was fine with the purchase because Eaton made it alongside them. Under $700 for an Eaton True Trac conversion is better to buy there.