Overview Reviews Product Description Ring and Pinion - 3.08 Ratio - 30 Spline Pinion - 3 Series - 8.5 in / 8.625 in - GM 10-Bolt - Kit Product Videos Custom Field Product Reviews Write a Review Write a Review × RICHMOND 3.08 8.5in 10 Bolt GM RIC49-0017-1 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *