This GM 10 Bolt 8.5/8.6 Ring and Pinion is a Revolution Gear replacement set for GM 8.5″ and 8.6″ 10-Bolt differentials. Revolution Gear cuts it using the same face-hobbed process as the OE brands, producing lower noise and higher load.
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Not sure it suits your vehicle? Send us your rego and we will confirm before you order.
All work and parts supplied by Gearhead Diffs are covered for 12 months or 20,000 km, whichever comes first, provided the vehicle is serviced to schedule, filled with the correct spec Red Line oil and not misused.
Shipped NZ wide by courier. Overnight to most South Island addresses, one to two days to the North Island, rural delivery can add a day. Freight is calculated at checkout, or free when it travels in the box with an exchange diff.
This GM 10 Bolt 8.5/8.6 Ring and Pinion is a Revolution Gear replacement set for GM 8.5″ and 8.6″ 10-Bolt differentials. Revolution Gear cuts it using the same face-hobbed process as the OE brands, producing lower noise and higher load capacity than traditional face-milled gears for a quieter, stronger gear set in daily driving and towing.
This set is designed for the carrier used on 2.73-and-higher ratio setups, confirm your existing carrier if your diff currently runs 2.56 or lower. Revolution Gear backs the set with a 2-year warranty against manufacturing defects.
This set suits GM 8.5″ and 8.6″ 10-Bolt differentials running standard rotation gearing. The 3.73 ratio strikes a balance between highway cruising and everyday acceleration, making it a popular replacement ratio for trucks and SUVs running close to stock tyre sizes, suited to daily driving and light towing without an aggressive low-end. Confirm your diff’s exact casting before ordering, since GM used several 10-Bolt variants across this range.
Revolution Gear and Axle has built its reputation over more than a decade of street, off-road, and race use. Enthusiasts trust the brand for consistent quality across a wide range of truck, SUV, and passenger applications, a track record that gives you confidence this gear set will perform as well in your build as thousands of others already on the road.
Not sure if this ring and pinion matches your differential? Get in touch and we’ll help you confirm fitment before you order. For more on Revolution Gear’s GM ring and pinion range, see their official product page.
Had the classic whine at 80. Diff turned up next morning, swapped it over myself with the fitting guide, return label was in the box. Three weeks on and dead quiet. Core charge came back inside a week.
Rural delivery so it was two days not one. The part itself is mint and the oil was in the box which I did not expect.
Price was the price, no surprises. Return pickup was already booked which made life easy.
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