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Ford Racing 2015 Mustang GT 8.8-inch Ring and Pinion Set - 3.55 Ratio

SKU: FRPM-4209-88355A

Ring and Pinion Gears

FR Ring and Pinion Sets...

Ford Racing 2015 Mustang GT 8.8-inch Ring and Pinion Set - 3.55 Ratio

SKU: FRPM-4209-88355A

Ring and Pinion Gears

FR Ring and Pinion Sets...

A$470.49
IN STOCK! Est Ship 3-5 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.
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Description

IMPORTANT NOTICE: Will not fit models with factory 3.15:1 gears without changing the differential. Requires aftermarket calibration if vehicle is not original equipped with this gear ratio. Requires Ford Racing Performance ring gear and pinion install kit, see required parts tab.

Ford Racing ring and pinion sets are engineered, manufactured, and tested for maximum performance. These ring and pinion sets are finished in a black oxide coating for corrosion resistance, and are available in many different ratios to fit a variety of Ford differentials. ** Note: 3.15 Ratio Differential not compatible with 3/31, 3.55, 3.73 and 4.09 ratio gears. Use differential M-4204-MT or M-4204-M. * This part is designed and intended for competition use only. It should not be installed on a vehicle that is driven on public roads and highways. Installation of this art on a vehicle driven on public roads and highways is likely to violate U.S. and Canadian laws and regulations relating to motor vehicle emissions.

Product Overview

Ford Racing ring and pinion sets are engineered, manufactured, and tested for maximum performance. These ring and pinion sets are finished in a black oxide coating for corrosion resistance, and are available in many different ratios to fit a variety of Ford differentials. ** Note: 3.15 Ratio Differential not compatible with 3/31, 3.55, 3.73 and 4.09 ratio gears. Use differential M-4204-MT or M-4204-M. * This part is designed and intended for competition use only. It should not be installed on a vehicle that is driven on public roads and highways. Installation of this art on a vehicle driven on public roads and highways is likely to violate U.S. and Canadian laws and regulations relating to motor vehicle emissions.


Features and Benefits

  • Incl. OEM Crush Sleeve and Pinion Nut
  • Requires M-4210-B3 Install Kit
  • OEM Quality Provides The Strongest/Quietest Gears On The Market
  • Requires Aftmkt Calib. If Vehicle Not Equipped w/This Gear Ratio
  • Made in the USA

Product Details

Year Make
Axle Type:Ford 8.8 in.
Description:Ring Gear And Pinion Set
Gear Ratio:3.55
Part Number:frpM-4209-88355A
Position:Rear
Prop 65 Yes/No:No
Title:Ford Performance - Mustang IRS Super 8.8-Inch Ring And Pinion Set-3.55 Ratio - M-4209-88355A
WARNING CA Proposition 65:No

Part Type

Differential Ring and Pinion

Data: v4.2 - Upd: 2026-10-13 22:16:25

Features

  • Incl. OEM Crush Sleeve and Pinion Nut
  • Made in the USA
  • OEM Quality Provides The Strongest/Quietest Gears On The Market
  • Requires Aftmkt Calib. If Vehicle Not Equipped w/This Gear Ratio
  • Requires M-4210-B3 Install Kit

Specifications

Product Attributes - Brand
Ford Performance Parts
Product Attributes - Manufacturer's Part Number
M-4209-88355A
Product Attributes - Part Type
Ring and Pinion Gears
Product Attributes - Product Line
Ford Performance Parts Ring and Pinion Sets
Product Attributes - UPC
756122000663
Product Attributes - Differential Case Design Type
Ford Super 8.8 in., IRS
Product Attributes - Ring and Pinion Ratio
3.55:1
Product Attributes - Cover Bolts
12
Product Attributes - Ring Gear Bolts
10
Product Attributes - Pinion Spline Count
30
Product Attributes - Ring Gear Rotation
Standard
Product Attributes - Ring Gear Teeth
39
Product Attributes - Pinion Gear Teeth
11
Product Attributes - Ring Gear Diameter (in.)
8.800 in.
Product Attributes - Pinion Shaft Diameter (in.)
2.010 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
Will not fit models with factory 3.15:1 gears without changing the differential. Requires aftermarket calibration if vehicle is not original equipped with this gear ratio. Requires Ford Racing Performance ring gear and pinion install kit, see required parts tab.

Reference Information

Brand Name/s Ford Racing
StreetFX SKU frpM-4209-88355A
SFX Item ID 4303035
Supplier Item Code 4303035
Manufacturer SKU M-4209-88355A
Manufacturer UPC 756122000663
Alternative References fms-m420988355a, FRDM4209-88355A, 8.8-inch

Compatibility

Application Data
  • Axle LocationRear
    Beginning Year2015
    Ending Year2022
    MakeFORD
    ModelMUSTANG
    SubmodelGT
  • Axle LocationRear
    Beginning Year2015
    Ending Year2015
    MakeFORD
    ModelMUSTANG
    SubmodelGT 50 YEARS LIMITED EDITION
  • Axle LocationRear
    Beginning Year2015
    Ending Year2022
    MakeFORD
    ModelMUSTANG
    SubmodelGT PREMIUM

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