Yukon Gear 1995-2004 Toyota Tacoma Rear Diff w/ Grizzly Locker 30 Spline & 4.11 Ratio Drop Out Assembly

The Yukon YDAT100-411YGL Dropout Assembly is a complete third member for Toyota 8.4″ rear diffs (1993–2015 T100 / Tacoma / early Tundra setups). It arrives pre-shimmed and backlashed to spec, built in a nodular iron case, and features a Yukon Grizzly Locker for maximum traction. Simply install it into your housing, add gear oil, and drive. 

Details & Specifications

• Part Number / SKU: YDAT100-411YGL
• Gear Ratio: 4.11
• Spline Count: 30 spline axles 
• Differential: Yukon Grizzly Locker (mechanical) 
• Case Material: Nodular iron for rigidity & reduced deflection 
• Yoke Included: Yes, assembled with casing 
• Price: $2,063.89 

Vehicle Fitment

• Fits Toyota 8.4″ rear differential housings using 30-spline axles (commonly T100, Tacoma, early Tundra). 
• Many listings reference 1993-2015 Tacoma, 1993-1998 T100, 2000-2006 Tundra, 2001-2007 Sequoia, and similar platforms. 

Why Choose This Dropout?

• Plug-In Convenience: Factory pre-shimmed & backlashed, no setup needed on install. 
• Strength & Stability: Nodular iron case helps maintain precise gear contact under load. 
• Traction On Demand: Grizzly Locker delivers torque to both wheels under load for improved performance off-road. 

Install Notes & Considerations

• After installation, fill with correct gear lubricant and follow break-in procedures for new gears/locker.
• Torque housing bolts to spec and verify proper sealing of the differential cover.
• Because the locker locks both wheels under load, expect increased tire wear in tight, high-angle turns.
• Verify your housing, bearing dimensions, and axle setup match a 30-spline 8.4″ Toyota housing before purchasing.

Questions? We’re Here to Help.

Have questions about suspension or drivetrain upgrades for your truck? Our team at FASS Motorsports is here to assist:

• Phone: 636-429-7020
• Email: info@fassmotorsports.com