Upgrade drivetrain performance with Yukon’s precision-engineered 4.56 ratio gear set for Ford 8.8" reverse rotation axles. Ideal for off-roading, towing, and larger tires, it delivers stronger torque and lifetime durability with the Y.E.S. Plan protection.
Top Features4.56 gear ratio for enhanced torque and acceleration
Reverse rotation for front 8.8" differentials
30-spline pinion and 10-bolt ring gear
Heat-treated alloy steel for high durability
Backed by Yukon’s lifetime Y.E.S. Plan
Ford Expedition (1997–2024)
Ford F-150 (1997–2024)
Ford F-250 (1997–1999)
Lincoln Navigator (1998–2014)
Lincoln Mark LT (2006–2008)
Physical products may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed, it is non-refundable.
Digital Products, such as MPT Tunes and HP Tuners Credits, are not covered by this.
Please see our Refund Policy or contact an MPT Expert for more information.
MPT is proud to offer free shipping on most orders over $149.
Free Shipping applies only to the contiguous United States. Shipping and handling charges will apply to all orders outside the contiguous US, with the buyer being responsible for any duty fees or taxes their home country may charge to import goods.
With Free Shipping, we will choose the best shipping method for the order. We use all major carriers, including USPS, FedEx, UPS, and DHL.
Items not stocked at our location may incur additional lead-time or charges.
Please our Shipping Policy for more information.
Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986) is a California law that applies to all companies selling products in California. Proposition 65 requires warnings if a product contains any listed chemical present above very low levels that are known to cause cancer, birth defects or other reproductive harm. Proposition 65’s warning standards are among the most stringent in the world. Proposition 65 is not a product safety law, but rather a “right-to-know” law. Businesses are required to provide warnings to comply with Proposition 65. These warnings are required to be in place for all products offered for sale in California.
There are over 800 chemicals on the Proposition 65 list, which is administered by California's Office of Environmental Health Hazard Assessment (OEHHA), a part of the California Environmental Protection Agency. The list includes naturally occurring and man-made chemicals. Proposition 65 warnings can be seen for a wide variety of everyday consumer products, including Automotive Performance products, and warnings can be seen posted throughout California in a variety of establishments such as hotels, restaurants, automobile dealerships/repair shops, and retail stores just to name a few.
To comply with the requirements of Proposition 65, this warning is present on all products sold by MPT.
More detailed information can be found by going to:
https://www.p65warnings.ca.gov/
The Yukon Gear YG F8.8R‑456R is a premium, high‑performance ring and pinion gear set engineered for those who demand durability, precision, and improved performance from their Ford 8.8‑inch reverse rotation front differential. With a 4.56 gear ratio, this set delivers a noticeable increase in torque multiplication off idle and better hauling or towing capacity, especially useful when paired with larger tires or heavier loads. Built using state‑of‑the‑art design, advanced heat‑treating techniques, and stringent quality testing, this gear set meets exacting standards both structurally and in surface finish. It’s ideal for SUVs and trucks like Expeditions, F‑150s, and more — for drivers who want enhanced traction, reliability, and a long service life.
Reverse‑rotation design specifically for Ford 8.8‑inch front differential
4.56 gear ratio for improved torque and pulling performance
8.80‑inch ring gear diameter, engineered to OEM and performance spec
Strong 30‑spline pinion matched to exacting durability standards
10 bolt ring gear configuration, making installation more accessible
Enhanced acceleration & towing capability: the 4.56 ratio gives more mechanical advantage, helping when climbing hills, towing, or off‑road situations
Stronger drivetrain reliability under load: Yukon’s heat treatment and quality control deliver gears that resist wear, reduce heat, and maintain consistent long‑term durability
Quieter, smoother operation: precision manufacturing ensures better gear tooth contact and reduced noise under load
Lifetime protection: covered by Yukon’s Y.E.S. Plan, a lifetime comprehensive, no‑questions‑asked protection plan for the gear set as long as the vehicle is owned
One‑year warranty against manufacturing defects plus the Y.E.S. Plan for full‑life protection
Ratio: 4.56
Ring gear diameter: 8.80 inches
Pinion spline count: 30 splines
Ring gear bolts: 10 bolts
Material: high strength alloy steel (heat treated)
Color/finish: raw steel / machined gloss finish, precision gear teeth surface
Weight: approximately 19.75 lb
Package dimensions: roughly Length 16 in × Width 12 in × Depth 6 in
Installing the Yukon Gear YG F8.8R‑456R is considered moderately easy to intermediate for someone familiar with differential work. With proper tools (dial indicator for backlash, torque wrench, bearing preload tools), setup time for a full gear swap is around 4‑6 hours, depending on experience. Even if it’s the first time, careful measurement and following Yukon’s setup instructions make the job manageable. If questions arise or alignment seems off, it's advisable to consult a specialist.
Fits front reverse‑rotation Ford 8.8‑inch differentials on:
Ford Expedition – years 1997 through 2024
Ford F‑150 – years 1997 through 2024
Ford F‑250 – years 1997 through 1999
Lincoln Navigator – years 1998 through 2014
Lincoln Mark LT – years 2006 through 2008
Engines: all standard engines for these models paired with reverse‑rotation front 8.8 differential. Always verify your differential is reverse rotation and 8.8‑inch size before purchasing.
If there are any uncertainties about fitment, technical details, or you believe any specs may be incorrect, contact the MPT Performance experts at (407) 636‑7077, or by email.
MPT is proud to offer free shipping on most orders over $149.
Turnaround Times:
Special Considerations:
A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.
MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.
Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.
For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.
The customer is responsible for all shipping charges incurred during the return process.
Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
•After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.
HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.
Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.
nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.
MPT Decals are Non-Refundable, once they have been received by the customer.
Year | Make | Model | Submodel |
---|---|---|---|
1997-2010 | Ford | Expedition | Eddie Bauer |
2007-2010 | Ford | Expedition | EL Eddie Bauer |
2008-2014 | Ford | Expedition | EL King Ranch |
2007-2014 | Ford | Expedition | EL Limited |
2011-2014 | Ford | Expedition | EL XL |
2007-2014 | Ford | Expedition | EL XLT |
2008 | Ford | Expedition | Funkmaster Flex Edition |
2006,2008-2014 | Ford | Expedition | King Ranch |
2005-2014 | Ford | Expedition | Limited |
2004 | Ford | Expedition | NBX |
2011-2014 | Ford | Expedition | XL |
2004-2006 | Ford | Expedition | XLS |
1997-2014 | Ford | Expedition | XLT |
2004,2006 | Ford | Expedition | XLT Sport |
1997-2000 | Ford | F-150 | Base |
2010 | Ford | F-150 | FX2 |
2004-2014 | Ford | F-150 | FX4 |
2006-2008,2010 | Ford | F-150 | Harley-Davidson Edition |
2001-2003,2005-2020 | Ford | F-150 | King Ranch |
1997-2020 | Ford | F-150 | Lariat |
2011 | Ford | F-150 | Lariat Limited |
2013-2014,2016-2020 | Ford | F-150 | Limited |
2009-2020 | Ford | F-150 | Platinum |
2018-2020 | Ford | F-150 | Police Responder |
2017-2020 | Ford | F-150 | Raptor |
2016-2020 | Ford | F-150 | SSV |
2004-2014 | Ford | F-150 | STX |
2010-2014 | Ford | F-150 | SVT Raptor |
2008 | Ford | F-150 | THE 60TH ANNIVERSARY EDITION |
1997-2020 | Ford | F-150 | XL |
1997-2020 | Ford | F-150 | XLT |
1997-1999 | Ford | F-250 | Base |
1997-1999 | Ford | F-250 | Lariat |
1997-1999 | Ford | F-250 | XL |
1997-1999 | Ford | F-250 | XLT |
2006-2008 | Lincoln | Mark LT | Base |
1998-2005,2008-2014 | Lincoln | Navigator | Base |
2008-2014 | Lincoln | Navigator | L |
2007 | Lincoln | Navigator | L Luxury |
2007 | Lincoln | Navigator | L Ultimate |
2006-2007 | Lincoln | Navigator | Luxury |
2006-2007 | Lincoln | Navigator | Ultimate |
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