Home / Shop / Yukon Gear & Axle Ring and Pinion Sets YG F10.5-488-31 Gears, 4.88:1 Ratio, 31-spline, Standard Rotation, Ford 10.5 in., Set

Yukon Gear & Axle Ring and Pinion Sets YG F10.5-488-31 Gears, 4.88:1 Ratio, 31-spline, Standard Rotation, Ford 10.5 in., Set

SKU: YUKF10.5-488-31

Ring and Pinion Gears

Yukon Gear & Axle

Yukon Gear & Axle Ring and Pinion Sets YG F10.5-488-31 Gears, 4.88:1 Ratio, 31-spline, Standard Rotation, Ford 10.5 in., Set

SKU: YUKF10.5-488-31

Ring and Pinion Gears

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Description

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 1999-2010 Ford 10.5 in.
4.88 ratio
Fits 1999-2010 Ford 10.5"
10.50" ring gear diameter
31 spline pinion
12 ring gear bolts
10.50 in. Ring Gear Diameter

Product Details

AAP Selling Package Quantity UOM:	EA
AAP_UDA_12:	EA
AAP_UDA_22:	1
Axle Model:	Ford 10.5
Axle Type:	Ford 10.5 in.
California Proposition 65:	Not Applicable
Cover Bolt Quantity:	12
Description:	High performance Yukon ring/pinion gear set for 10/down 10.5in. in a 4.88 .
Differential:	Ford 10.5, 08-10
Gear Ratio:	4.88
Mounting Hardware Included:	No
Part Number:	yukYG F10.5-488-31
Pinion Spline Count:	31
Position:	Rear
Ring Gear Bolt Quantity:	12
Ring Gear Outside Diameter:	10.5
Shims Included:	No
Title:	Yukon high performance ring & pinion set, '10 & down Ford 10.5", 4.88 ratio
WARNING CA Proposition 65 Required:	No
WARNING CA Proposition 65:	No

Application Summary

10.5" FORD 4.88 R&P '99-'10 w/ 31spl PINION

Part Type

Differential Ring and Pinion

Data: v4.2 - Upd: 2026-10-16 05:09:58

Features

4.88 ratio

Specifications

Product Attributes - Brand: Yukon Gear & Axle
Product Attributes - Manufacturer's Part Number: YG F10.5-488-31
Product Attributes - Part Type: Ring and Pinion Gears
Product Attributes - Product Line: Yukon Gear & Axle Ring and Pinion Sets
Product Attributes - UPC: 883584245704
Product Attributes - Differential Case Design Type: Ford 10.5 in.
Product Attributes - Ring and Pinion Ratio: 4.88:1
Product Attributes - Cover Bolts: 12
Product Attributes - Ring Gear Bolts: 12
Product Attributes - Pinion Spline Count: 31
Product Attributes - Ring Gear Rotation: Standard
Product Attributes - Ring Gear Teeth: 39
Product Attributes - Pinion Gear Teeth: 8
Product Attributes - Ring Gear Diameter (in.): 10.500 in.
Product Attributes - Pinion Shaft Diameter (in.): 1.940 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: Fits 1999-2010 models only.

Reference Information

Brand Name/s	Yukon Gear & Axle
StreetFX SKU	yukF10.5-488-31
SFX Item ID	4788493
Supplier Item Code	4788493
Manufacturer SKU	F10.5-488-31
Manufacturer UPC	883584245704
Alternative References	YGA-24570, 31-spline