G2 GM 8.5 Inch 10 Bolt 4.56 Ratio Ring and Pinion - 2-2021-456

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  • G2 Axle and Gear | Part Number: G/22-2021-456
  • Popular Axle Manufacture:GM
  • Axle Location:Front|Rear
  • Axle Type:GM 10 Bolt 8.6 Inches|GM 10 Bolt 8.5 Inches
  • Fitment:Universal Fit
  • Gear Ratio:4.56


G2 Performance Ring & Pinion sets are engineered with todays most demanding applications in mind. Designed to hold up to oversized tires and high performance engines, these gears use the latest technology and materials in their manufacturing to give you the strongest and quietest performance gear sets available.

Customer Reviews

4.0 4.0
2 Customer ratings
4.0 "Awesome Results"

Big difference in performance. Feel the torque and power pull, Quiet Ride.Only thing is I havent seen any improvements in MPG.

from San Diego,CA |
4.0 Worked well fit perfect

If you really beat on your truck buy the warrenty offered by 4 wheel parts

from Luckey, Ohio |


Question & Answers

5 Answered questions

Q: will this work in my 2007 Silverado 4.8 new body style and do I have to buy the master install kit for it to work? Answer this question

A: Hello Silverado The G/22-2021-456 Ring and pinion will fit your 2007 Silverado 1500 4.8L with a 10 bolt rear end. You will need the master install kit part number G/235-2022 to correctly do the installation. The 4.56 gears will work best withy a 35 inch tall tire. Thank You for your question. Jon Snyder 4Wheelparts

Answered by RK on 09/11/2015

Q: I have 1999 Chevy Silverado 5.3 with 3.73 gears. The truck is lifted 6inches with a Superlift (suspension lift) with 35"x10" Nitto Terra Grapplers. What gears would be best to compensate for the loss in torque from the lift and tires Answer this question

A: Thanks for the inquiry Hayden, the G2 Axle and Gear GM 8.5in. 10 Bolt 4.56 Ratio part # G/22-2021-456 we would recommend this ratio for that tire size.

Answered by RK on 09/06/2015

Q: Since I have a 4 wheel drive, I would also have to swap out the front gears as well correct? What would I want for that Answer this question

A: Hello Kyle You would need the same ratio for the front end also. You didn't say what year the truck is so I couldn't give you any part numbers. Thanks

Answered by Rody on 05/18/2015

Q: I have a 2010 chevy silverado and looking to leave my 3.08's behind for the 4.10's or 4.56's... I don't really know what I need to do the swap out though, any way you could get me a list of parts to do order? Answer this question

A: Thanks for the inquiry kyle, the G2 Axle and Gear GM 8.5in. 10 Bolt 4.56 Ratio part # G/22-2021-456 all you'll need is the gear set and we recommend a master install kit with bearings use part # G/235-2022A.

Answered by RK on 05/18/2015

Q: Does your shop also instal ring and piñon? 2005 chevy avalanche currently with 35" tires and 3.73 gear ratio. Would like to go to 4.56 gear ratio. Answer this question

A: Hello Yes all of our stores do ring and pinion installs. With 35's the 456's would be the perfect choice for your truck. Thanks

Answered by Rody on 03/20/2015


G2 Axle & Gear uses the strongest and latest generation materials to manufacture products capable of handling heavy loads. When it comes to axle assemblies, core lockers, driveshafts and sway bars, G2 is the first name in durability and reliability. Off-roading can heap punishment on a Jeep and G2's laser-cut components offer superior handling on challenging terrain and on-road drives. Parts are easy to install and easy to service and above all, they remain operational in adverse environments. Shop G2 Axle and Gear Now


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