★★★★★ Good part, freight took an extra day
Hemi R · Gisborne · Example review 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.
Out of stock, enquire Trade customers: log in to see your pricing.
GM 10 Bolt 8.5/8.6 Ring and Pinion 4.10 Ratio Revolution Gear
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.
$695 incl GST
Fitting availableFitted in store at Gearhead Diffs, Sydenham
12 months or 20,000 kmOn parts we supply and fit
Fitment
SuitsGM 10 Bolt 8.5/8.6 Ring and Pinion 4.10 Ratio Revolution GearMakeChevroletModelGM 8.5/8.6-10 BoltPositionRearRatio4.10BrandRevolution GearSKUGS-GM85/86-410-REV
Not sure it suits your vehicle? Send us your rego and we will confirm before you order.
Warranty and delivery
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.
Description
GM 10 Bolt 8.5/8.6 Ring and Pinion 4.10 Ratio Revolution Gear
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.
Specifications
- Gear Rotation: Standard
- Pinion Splines: 30
- Ring Gear Diameter: 8.5 inches
- Ring Gear Bolt Thread: 10 x 7/16 inch
- Cover Bolts: 10 Bolt
- Carrier Break: 2.73 ratio and higher
- Material: 8620 steel
- Country of Manufacture: Korea
- Warranty: 2 Year Limited
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.
GM 10 Bolt 8.5/8.6 Crown Wheel and Pinion Fitment
This set suits GM 8.5″ and 8.6″ 10-Bolt differentials running standard rotation gearing. The 4.10 ratio suits trucks and SUVs running larger tyres or heavier loads, restoring the acceleration and towing power a taller ratio would give up, a common upgrade choice for lifted or work-duty builds. Confirm your diff’s exact casting before ordering, since GM used several 10-Bolt variants across this range.
Why Choose Revolution Gear
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.
Reviews
No reviews on this product yet. Bought one? We would like to hear how it went. Write a review Bought this? You'll get a review link by email three weeks after it ships. Only customers who have bought the product can review it. Example reviews These three are examples to show the layout. Real reviews from verified buyers replace them as they come in.
★★★★★ Exactly as described
Sarah M · Dunedin · Example review Price was the price, no surprises. Return pickup was already booked which made life easy.
★★★★★ We fit these for customers every month
Workshop customer · Christchurch · Example review Order before 2pm, on the bench next morning. Preload sorted so we do not see them back. Saves us a hoist for a week every time.
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