Yukon Gear High Performance Gear Set For Ford 8.8in in a 4.11 Ratio
A 4.11 is the middle-ground regear for a Ford 8.8: deep enough to wake up an F-150 or Expedition on 33 in. tires, put the snap back into a Ranger or Explorer that tows, or give a Fox-body or SN95 Mustang a harder launch, without spinning the engine as high on the highway as a 4.56. The Yukon Gear & Axle YG F8.8-411 is a new 4.11 ring and pinion for the standard-rotation Ford 8.8 rear, and it also replaces worn factory gears that whine on the highway.
The 8.8 is a hypoid rear axle: the pinion runs on two tapered bearings held under preload by a crush sleeve and drives an 8.80 in. ring gear bolted to the carrier with 10 bolts. This set uses a 30-spline pinion. At 4.11, the driveshaft turns 4.11 times for every turn of the tires. Compared with common factory ratios like 3.27, 3.55 or 3.73, that is a real gain in torque at the wheels, which restores acceleration lost to taller tires and lets the transmission stay in a higher gear while towing. Highway rpm goes up, but less than with the 4.56 and 4.88 sets used for bigger tires.
Find your current ratio on the door sticker axle code or the tag under a cover bolt, or count driveshaft turns per tire turn using our axle code guide. Run the numbers for your tire size in the regear guide before choosing between 4.11 and a deeper ratio. If the complaint is noise, pull the cover and check the teeth and bearings first; our Ford 8.8 rear axle guide walks through the common failures, and turn chatter is covered in the Traction-Lok chatter fix.
This set fits the standard-rotation Ford 8.8 rear. The application list includes the 1983-2014 F-150, 1979-2014 Mustang, 1990-2011 Ranger, 1991-2010 Explorer, 1997-2014 Expedition, 1983-1996 Bronco, 1983-2002 E-150, Crown Victoria, Grand Marquis and Town Car, and the Lincoln Navigator, Aviator and Mark LT, in 28 and 31-spline axles and the IRS rears in 2002-and-later Explorer, Expedition and Navigator. It does not fit the 2015-and-later Super 8.8 with its 12-bolt cover or the reverse-rotation 8.8 IFS front. Ford changed pinion bearing sizes across these years, including the 2010-2014 Mustang and late straight axles with a larger pinion bearing, so match your bearing kit to your housing or send us your year and VIN. More 8.8 ratios, such as the 3.73 and 4.56 sets, are in our hard parts section.
Use new bearings with new gears: the USA Standard ZK F8.8 master overhaul kit or the Yukon kit for 2009-and-earlier 8.8 axles. Yukon's chart gives the 8.8 a starting pinion shim of 0.026 in., 14-19 in-lb of new pinion bearing preload and 60 ft-lb on the ring gear bolts and bearing caps. Set depth and backlash, confirm the pattern with marking compound, and if the Traction-Lok chatters, rebuild it now with a spider gear and clutch pack kit. Fill with 75W-140 or the grade in your manual, add friction modifier for a limited slip, and follow the break-in procedure with an oil change at 500 miles.
| Brand | Yukon Gear & Axle |
| Part number | YG F8.8-411 |
| Fits | Yukon Gear High Performance Gear Set For Ford 8.8in in a 4.11 Ratio |
| Type | Final Drive Gears |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
No. 2015-and-later F-150 and Mustang rears use the redesigned Super 8.8 with a 12-bolt cover and a different pinion. This set is for 2014-and-earlier standard-rotation 8.8 axles.
On many F-150s and Expeditions with 4-speed automatics, 4.11 is a common choice for 33s. Trucks on 35s or with heavy loads often go to 4.56. Check the regear guide with your exact tire size.
Yes. Axle spline count is set by the carrier and axle shafts, not the ring and pinion. This set uses a 30-spline pinion and fits 8.8 housings with either axle spline.
It is not recommended. Setting up new gears changes pinion depth and preload. Use a master overhaul kit with new bearings, races, seal and crush sleeve.
Yes. Changing the axle ratio changes speedometer and shift calibration on most of these vehicles. Program the new ratio and tire size with a tuner or have it done after install.
