Yukon Gear 1995-2015 Toyota Tacoma Rear Diff w/ Grizzly Locker 30 Spline & 3.73 Ratio Drop Out Assembly
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
The Yukon YDAT100-488YGL Dropout Assembly is a complete, ready-to-install third member for Toyota 8.4″ rear axles (T100/Tacoma/Tundra applications using 30-spline shafts). Built and pre-set by Yukon technicians, it arrives fully shimmed and backlashed to spec, upgraded with a mechanical Yukon Grizzly Locker for maximum traction. Just bolt the third member into your housing, add gear oil, and go.
Key Features & What’s Included
- Complete Dropout (Third Member) Assembly — Professionally shimmed and backlashed at the factory for a true bolt-in install.
- Gear Ratio: 4.88
- Spline Count: 30-spline axle compatibility
- Differential: Yukon Grizzly Locker (mechanical locker) for positive, on-demand traction.
- Case: Heavy-duty nodular iron housing for added rigidity and consistent gear contact under load.
- Yoke Included — Ships with yoke installed.
Fitment
- Designed for Toyota 8.4″ rear differential applications that use 30-spline axles (commonly T100 and select Tacoma/Tundra models—verify your axle).
Why Choose a Yukon Pre-Built Dropout?
- Time Saver: No setup guesswork—factory-set backlash and preload speeds installation.
- Stronger by Design: Nodular iron case limits deflection to help gears run quieter and last longer.
- Trail-Ready Traction: Grizzly Locker sends torque to both wheels when you need it most.
Availability & Notes
- Part Number: YDAT100-488YGL
- After installation, fill with the correct gear oil and follow standard break-in procedures for new gears/locker.
- California Proposition 65 warning may apply.
Questions? We’re Here to Help.
Have questions about suspension upgrades for your truck? Our team at FASS Motorsports is here to assist:
- Phone: 636-429-7020
- Email: info@fassmotorsports.com
