QP 8.5" 10-Bolt GM Rear End Gear Set - 3.55 Ratio With Master Bearing Installation Kit

Here's a complete gear setup for a GM 8.5-inch 10-bolt rear end.

It's from QP, part number GM85-355wMK.

You're getting a 3.55 ratio ring and pinion gear set, plus a master bearing and installation kit—everything you need to set up your differential.

It's all brand new, never used, still in the original packaging.

The gears are cut for performance and durability, whether you're building a street car, a truck, or something you take to the track.

The master kit includes bearings, shims, and all the small parts to make the install go smoothly.

If you're re-gearing for better acceleration or towing, this 3.55 ratio is a solid all-around choice.

QP is the brand on the parts, so you're getting quality stuff.

Just make sure your rear end is the 8.5\ 10-bolt before you order.