ALLSTAR PERFORMANCE – Ring & Pinion GM 8.5 4.10
ALL70126

Ring and Pinion – 4.10 Ratio – 30 Spline Pinion – 8.5 in – GM 10-Bolt – Kit

This gearset is a 4.10:1 ratio with a 10 tooth pinion and a 41 tooth ring gear not a a 4.11:1 ratio with a 9 tooth pinion and 37 tooth ring gear.