Yukon Gear Steel Differential Spool for Ford 10.25/`10.5 w/ 35 Spline Axle
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 Gear & Axle YP FSF10.25-35 Differential Spool is a full-spool assembly built for Ford 10.25″ / 10.5″ rear ends using 35-spline axles and 12-bolt housings. Designed for performance use, it ensures both sides receive equal torque all the time—ideal for aggressive off-road, high horsepower, or track builds.
Key Features & Specs
- Application: Ford 10.25″ / 10.5″ rear differential, 35 spline, 12-bolt case
- Spool Type: Full spool — connects both axle shafts rigidly for 100% torque to each side
- Pressure Angle: 45° — optimized for aggressive ring & pinion engagement
- Material & Build: Heavy-duty machining and design for durability under high load
- Finish & Color: Black anodized or oxide coating for corrosion resistance
- Pricing / Stock: $755.89, 56 units in stock
- Shipping / Warranty: Ships same day; 1-year limited warranty (check terms)
Why Choose This Spool?
- Eliminates Slip & Wheel Spin — Because both axles are locked together, you avoid loss of traction under load or in loose terrain.
- High Strength Under Load — Suitable for builds with heavy power, lifted rigs, and high-demand off-road use.
- Precision Engineered — Manufactured by Yukon, known for tight tolerances and quality differential components.
- Serviceable Upgrade Path — Works with existing housing and bolt pattern; internals may be replaceable without replacing the entire spool.
Fitment Considerations & Notes
- Only compatible with Ford 10.25 / 10.5″ rearings that use 35-spline axle shafts and 12-bolt housings.
- Using this spool means both wheels turn equally — there is no differentiation in cornering, which can increase tire wear and stress in tight turns.
- May require re-calibration of ABS, traction control, or speed sensors depending on your vehicle setup.
- Use proper break-in procedures for new spool to ensure longevity and proper seating of parts.
Questions? We’re Here to Help.
Have questions about differential or drivetrain upgrades for your truck? Our team at FASS Motorsports is here to assist:
- Phone: 636-429-7020
- Email: info@fassmotorsports.com
