The Yukon USA Standard ring and pinion set for GM 8.5‑inch axles in a 3.73:1 ratio restores intended axle ratio with a direct replacement gearset. It fits GM 8.5‑ and 8.6‑inch axles with an 8.50‑inch ring gear diameter, 10 ring‑gear bolts and a 30‑spline pinion. Yukon reports these sets exceed OEM specifications and are subject to rigorous in‑house testing for dimensional, material and fitment accuracy.
USA Standard Ring & Pinion Gear Set For GM 8.5in in a 3.73 Ratio