Yukon Gear High Performance Gear Set For Toyota 7.5in Reverse Rotation in 4.88 Ratio

Yukon Gear Ring and Pinion Set for Toyota 7.5-Inch Reverse Rotation in 4.88 Ratio

The YG T7.5R-488R from Yukon Gear and Axle is a high-performance reverse-rotation ring and pinion set built specifically for the Toyota 7.5-inch front differential. This reverse-rotation design is required for the front axle differential found in 4WD Toyota 4Runner, Tacoma, Sequoia, and Tundra models from 1995 through 2007. The YG T7.5R-488R delivers a 4.88 gear ratio that pairs with a matching rear ratio change to give your Toyota the crawl ratio and highway RPM management needed when running oversized tires. Yukon manufactures this gear set using high-grade steel alloy with a precision-machined tooth profile tested in two dedicated in-house quality labs. When you need to regear the front of your truck to match a rear gear change, the YG T7.5R-488R is the correct direct-fit solution.

Key Features and Benefits

• Reverse-Rotation Design: Purpose-built for Toyota 7.5-inch front differential; standard-rotation gears will not work here
• 4.88 Gear Ratio: Ideal pairing for 33-to-37-inch tire setups demanding aggressive regearing
• 27-Spline Pinion: Matches factory Toyota 7.5-inch front carrier configuration
• High-Grade Steel Alloy: Premium material resists wear under sustained off-road and towing stress
• Precision Surface Finish: Advanced tooth geometry reduces friction, heat, and noise in all conditions
• Dual Lab Quality Control: Every set verified for dimensional accuracy and load tolerance before shipping
• Y.E.S. Plan Eligible: Optional lifetime no-questions-asked warranty coverage available

Fitment

Specs

What Is Included

• Reverse-rotation ring gear
• Reverse-rotation pinion gear
• Pinion nut

Frequently Asked Questions

• Q: Why does this gear set need reverse rotation?
  A: Toyota 7.5-inch front differentials spin the pinion in the opposite direction from a conventional rear axle. Using a standard gear set in this application will cause the vehicle to move backward when put in drive.
• Q: Will the YG T7.5R-488R work in the rear differential?
  A: No. The YG T7.5R-488R is reverse-rotation only and is designed exclusively for the front differential. Your rear axle requires a standard-rotation gear set at the same ratio.
• Q: What spline count does this gear set use?
  A: The YG T7.5R-488R uses a 27-spline pinion, matching the Toyota 7.5-inch front differential carrier.
• Q: Can I regear only the front or only the rear?
  A: You must regear both front and rear axles to the same ratio. Mismatched ratios cause binding in 4WD and excessive wear on the transfer case.
• Q: Does installing aftermarket gears affect my factory warranty under Magnuson-Moss?
  A: The Magnuson-Moss Warranty Act protects you. A dealer must demonstrate that the aftermarket gear set caused the failure before denying warranty coverage on your drivetrain.
• Q: What additional parts do I need for this installation?
  A: You will need a Toyota front differential master install kit including bearings, races, seals, and shims, plus gear marking compound and a dial indicator.
• Q: What warranty does the YG T7.5R-488R carry?
  A: Yukon covers the YG T7.5R-488R for one year against manufacturing defects. The Y.E.S. plan provides lifetime no-questions-asked protection.
• Q: Is professional installation recommended?
  A: Yes. Reverse-rotation gear setup requires precise pinion depth, backlash, and pattern checks that differ slightly from standard installations. A professional differential technician is advised.

Installation Instructions

1. Raise the vehicle and safely support it. Disconnect the front driveshaft from the front differential yoke.
2. Drain gear oil from the front differential housing.
3. Remove the front axle shafts and differential cover.
4. Mark carrier bearing cap positions before removal. Record existing backlash and pinion preload.
5. Remove the carrier assembly and old reverse-rotation ring and pinion.
6. Press old pinion bearings off and install new bearings from the master install kit.
7. Set pinion depth using the appropriate shim and dial indicator. Verify tooth depth per Yukon spec sheet.
8. Install the new ring gear from the YG T7.5R-488R set onto the carrier using new ring gear bolts torqued in a cross pattern.
9. Set carrier bearing preload and ring-to-pinion backlash between 0.006 and 0.010 inch.
10. Apply gear marking compound and verify contact pattern. Adjust pinion depth or backlash as needed.
11. Reinstall cover with RTV or gasket. Fill with the specified Toyota front differential fluid.
12. Reconnect driveshaft with original orientation marks aligned. Torque all fasteners to spec.
13. Follow Yukon break-in procedure before sustained highway use.

Proposition 65 Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.