Revolution Gear & Axle 16-23 Toyota Tacoma 8.75in Rear Axle 5.29 Ratio Gear Package
REV-TACO-8.75-529 is the deepest ratio Revolution Gear & Axle offers for the 2016-2023 Tacoma with the 8.75-inch locking rear axle. It is aimed at the heavily built third-gen truck: 35-class tires, a drawer system and rooftop tent, armor, a winch, or a trailer behind it. When a Tacoma like that needs a lot of throttle just to hold speed, labors in 4-Lo on steep ledges, or runs hot on long grades, 5.29 gears are how owners get the low-end pull back.
The engine turns the driveshaft; the pinion and ring gear in each differential divide that speed by 5.29 before it reaches the tires. The deeper the ratio, the more torque arrives at the contact patch and the faster the engine spins for a given road speed. Because the Tacoma is a 4x4 with an 8-inch IFS front differential and an 8.75-inch solid rear, both carriers have to be re-geared to the same number. Revolution's package covers that with a 5.29 set for each axle and a master install bearing kit for each, using Timken bearings. The rear gear set fits the 8.75-inch housing and its 34-spline pinion; the front is the 29-spline 8-inch IFS set shared by every 2016-2023 model.
Compared with the 4.88 option, 5.29 is roughly 8 percent more gear. A useful way to decide: multiply the ratio by your factory tire diameter, divide by your new tire diameter, and see how close the result lands to what the truck had stock. Heavy trucks and owners who spend more time on trails than interstates usually want to overshoot slightly, which favors 5.29. If the truck is closer to stock weight and spends hours at highway speed, the 4.88 package for the same axles keeps cruising rpm lower.
The 8.75-inch rear only came on third-gen Tacomas with the factory rear differential locker. Trucks without the locker have the 8-inch rear and a different gear package. The compliance sticker in the driver's door jamb carries the axle code; a B as the fourth character means E-locker. Also note the current ratio from that code so your shop knows what is coming out. Two-wheel-drive trucks should call us before ordering, since this package includes a front set.
Not for the 2024-up Tacoma. Give us your year and VIN if you want a second check, and see more carriers and gear sets in our hard parts collection.
| Brand | Revolution Gear & Axle |
| Part number | REV-TACO-8.75-529 |
| Fits | Revolution Gear & Axle 16-23 Toyota Tacoma 8.75in Rear Axle 5.29 Ratio Gear Package |
| Vehicle fitment | Toyota Tacoma (2016-2023) |
| Type | Differential Install Kits |
| 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. The 8.75-inch rear was used on 2016-2023 Tacomas that have the factory rear locker. Open-diff trucks have the 8-inch rear and need a different package.
Owners running very large tires, heavy overland or armor builds, frequent towing, or a lot of slow 4-Lo trail time. If your truck is lighter and mostly on the highway, 4.88 keeps engine speed lower.
A 5.29 ring and pinion for the 8.75-inch rear (34-spline pinion), a 5.29 set for the 8-inch IFS front (29-spline pinion), and master install bearing kits for both.
Not on a 4x4. Mismatched front and rear ratios bind the driveline in 4WD. Both axles must be 5.29.
Yes. The speedometer and transmission shift strategy need to be updated for 5.29 and your tire size with a programmer that supports the third-gen Tacoma.
Drive gently without towing or heavy loads for the first stretch of miles, avoid long sustained high speed, and change the gear oil early to flush out break-in wear.
