Home / Shop / Yukon Gear & Axle Ring and Pinion Sets YG GM8.5-456 Gear, 4.56 Ratio, GM, 8.5 in./8.6 in., Set

Yukon Gear & Axle Ring and Pinion Sets YG GM8.5-456 Gear, 4.56 Ratio, GM, 8.5 in./8.6 in., Set

SKU: YUKGM8.5-456

Ring and Pinion Gears

Yukon Gear & Axle Ring and Pinion Sets YG GM8.5-456 Gear, 4.56 Ratio, GM, 8.5 in./8.6 in., Set

SKU: YUKGM8.5-456

Ring and Pinion Gears

IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.

We accept

Description

IMPORTANT NOTICE: Must use 2.73:1 or numerically higher ratio carrier.

Yukon Gear & Axle ring and pinion sets are strong but quiet performers. Designed to handle some of the harshest conditions, these sets utilize the latest design and manufacturing technologies to afford you a smooth running gear that's durable and easy to set up. Yukon ring and pinions are available in hundreds of size, ratio, and axle model options. Whether you're on the street, off-road, or at the track, you'll experience unrivaled power and gear performance. Order the model recommended for your application.

Product Overview

Yukon Gear & Axle high performance ring & pinions set the standard for quality. Yukon Engineers use state-of-the art design & testing processes, backed by 2 in-house quality labs to ensure each item manufactured meets exacting specifications & quality standards. Yukon designed gear tooth surface finish reduces both friction & heat for long races & high torque conditions. We use high grade steel in both the ring & pinion, with fitment designed to OEM specs. Go ahead, add loads of horsepower & go big on tires because Yukon offers the widest selection of gear ratios to choose from. You?ll know that your gear choice was the right one, because you chose Yukon. Yukon Ring & Pinions come with a 1 year warranty against manufacture defects. Yukon offers a Y.E.S. Plan for a lifetime, comprehensive, no-questions-asked protection plan covering your gears for as long as you own the vehicle.

Features and Benefits

Fits GM 8.5 in. And 8.6 in.
4.56 ratio
8.50" ring gear diameter
Fits GM 8.5" and 8.6"
10 ring gear bolts
30 spline pinion
8.50 in. Ring Gear Diameter

Product Details

AAP Selling Package Quantity UOM:	EA
AAP_UDA_12:	EA
AAP_UDA_22:	1
Axle Model:	GM 8.5 & GM 8.6
Axle Type:	Semi Float
California Proposition 65:	Not Applicable
Cover Bolt Quantity:	10
Description:	High performance Yukon Ring/Pinion gear set for GM 8.5in./8.6in. in a 4.56 ratio
Differential:	GM 8.6 Rear, 99-08
Gear Ratio:	4.56
Mounting Hardware Included:	No
Nested Gear Family:	Yes
Part Number:	yukYG GM8.5-456
Pinion Spline Count:	30
Position:	Front or Rear
Ring Gear Bolt Quantity:	10
Ring Gear Outside Diameter:	8.5
Shims Included:	No
Title:	High performance Yukon Ring & Pinion gear set for GM 8.5" & 8.6" in a 4.56 ratio
WARNING CA Proposition 65 Required:	No
WARNING CA Proposition 65:	No

Application Summary

8.5" GM 4.56 R&P ( USE OEM w/abs 4 IMPLA+CAPRICE)(NO ABS PROVISION)

Part Type

Differential Ring and Pinion

Data: v4.2 - Upd: 2026-10-16 05:11:09

Features

4.56 ratio

Specifications

Product Attributes - Brand: Yukon Gear & Axle
Product Attributes - Manufacturer's Part Number: YG GM8.5-456
Product Attributes - Part Type: Ring and Pinion Gears
Product Attributes - Product Line: Yukon Gear & Axle Ring and Pinion Sets
Product Attributes - UPC: 883584241614
Product Attributes - Differential Case Design Type: GM 8.5/8.6 in.
Product Attributes - Ring and Pinion Ratio: 4.56:1
Product Attributes - Cover Bolts: 10
Product Attributes - Ring Gear Bolts: 10
Product Attributes - Pinion Spline Count: 30
Product Attributes - Ring Gear Rotation: Standard
Product Attributes - Ring Gear Teeth: 41
Product Attributes - Pinion Gear Teeth: 9
Product Attributes - Ring Gear Diameter (in.): 8.500 in.
Product Attributes - Pinion Shaft Diameter (in.): 1.626 in.
Product Attributes - Installation Kit Included: No
Product Attributes - Cover Gasket Included: No
Product Attributes - Pinion Shims Included: No
Product Attributes - Carrier Shims Included: No
Product Attributes - Crush Sleeve Included: No
Product Attributes - Pinion Seal Included: No
Product Attributes - Pinion Nut Included: No
Product Attributes - Ring Gear Bolts Included: No
Product Attributes - Head Bearing Included: No
Product Attributes - Tail Bearing Included: No
Product Attributes - Carrier Bearings Included: No
Product Attributes - Axle Seals Included: No
Product Attributes - Axle Bearings Included: No
Product Attributes - Differential Cover Included: No
Product Attributes - Differential Oil Included: No
Product Attributes - Friction Modifier Included: No
Product Attributes - Installation DVD Included: No
Product Attributes - Quantity: Sold as a set.
Product Attributes - Notes: Must use 2.73:1 or numerically higher ratio carrier.

Reference Information

Brand Name/s	Yukon Gear & Axle
StreetFX SKU	yukGM8.5-456
SFX Item ID	4787870
Supplier Item Code	4787870
Manufacturer SKU	GM8.5-456
Manufacturer UPC	883584241614
Alternative References	YGA-24161, in./8.6