Yukon Gear & Axle YGKT001-488 Front & Rear Ring and Pinion Gear Kit with Install Kits Toyota 8.4/7.5R 4.88 Ratio

The Yukon Gear & Axle YGKT001-488 is a complete front and rear ring and pinion gear kit package designed for the Toyota 8.4-inch rear and 7.5-inch clamshell front differentials at a 4.88 gear ratio. This all-in-one re-gear package is engineered for vehicles without a factory locker and bundles everything needed to tackle a full differential re-gear in a single part number.

The rear differential gear set features a 30-spline pinion, 12-bolt ring gear, and an 8.125-inch ring gear diameter with standard rotation. The front gear set uses the reverse-rotation Toyota 7.5-inch design with a 23-spline pinion, 10-bolt ring gear, and a 7.500-inch ring gear diameter. The 4.88 ratio delivers a 39-tooth ring gear paired with an 8-tooth pinion, and pinion shaft diameters measure 1.570 inches (rear) and 1.378 inches (front).

Kit Contents & Included Hardware:

• Front and rear ring and pinion gear sets (4.88 ratio)
• Front and rear master installation/overhaul kits
• Pinion shims and carrier shims
• Crush sleeve
• Pinion seal and pinion nut
• Ring gear bolts
• RTV sealant

Key Specifications:

• Gear Ratio: 4.88:1
• Ring Gear Teeth: 39 | Pinion Teeth: 8
• Rear: 30-spline pinion, 12-bolt ring gear, 8.125" ring gear diameter
• Front: 23-spline pinion, 10-bolt ring gear, 7.500" ring gear diameter
• Rear Pinion Shaft Diameter: 1.570 in.
• Front Pinion Shaft Diameter: 1.378 in.
• Fits: Toyota 8.4 in. rear & 7.5 in. clamshell front differential
• For use on vehicles without factory locker

Yukon ring and pinion sets are manufactured using the latest design and production technologies to deliver quiet operation, precise fitment, and strength built to exceed OE tolerances. The included master overhaul kits are extensively validated to ensure a hassle-free installation with premium-quality components right out of the box.