Speedmaster 35-Spline Third Member Assembly with TorqueWorm LSD for Ford 9” Differential

Whether you got a daily driver or street rod, the Speedmaster 35-spline third member assembly is bound to transform your Ford 9” differential! Available in 13 different gear ratios, this assembly sports a heavy-duty case made from A356-T6 aluminum. This helps it achieve an exhilarating 1000+ horsepower rating, aided in part by the one-piece billet aluminum bearing caps. Even the pinion gets ample support via the case’s thru-bolt center design and the inclusion of ten 12-point bolts.

Features and Benefits:
- Available in 13 Different Gear Ratios
- Great for Daily Drivers, Street Rods, and Race Cars
- A356-T6 Aluminum Case with Thru-Bolt Center Design
- 1000+ Horsepower Rating
- 1-Piece Billet Aluminum Bearing Caps
- TorqueWorm Limited Slip Differential with 6-Pinion Gear
- LSD is Pre-Loaded to be a Faster-Acting Unit
- Spreads Stress Over Larger Area for Reduced Internal Load
- LSD’s Internal Components Built from EN36 Racing Material
- High-Quality, CNC-Machined Gear Sets
- Lapped for Correct Tooth Contact and Smoothness
- Gears Made of 8620 Chrome-Nickel-Moly Steel
- Heat-Treated for Extreme Durability and High Impact
- 1350 Series, Long-Style, CNC-Machined, Billet, TDS Yokes
- (10) Billet Aluminum 12-Point Thru-Bolts for Pinion Support

With this assembly, you also get the TorqueWorm limited slip differential with a 6-pinion gear. Not only is it pre-loaded to make for a faster-acting unit, but it also spreads stress over a larger surface area, reducing internal load. Strong nonetheless, the internal components are built from an EN36 material, known for its use in racing applications. High-quality, CNC-machined gear sets are included as well, each meticulously lapped for the correct tooth contact and smoothness. They’re made of 8620 chrome-nickel-moly steel and heat-treated, giving you the ultimate in durability and high impact.

Specifications:
- Carrier Bearing Diameter (inches): 3.250”
- Standard Pinion Location: Yes
- Ring Gear Load Bolt: No
- Ring and Pinion Included: Yes

Vehicle Fitment:
- 1965-1973 Ford Mustang
- 1966-1977 Ford Bronco
- 1948-1979 Ford F-100

Please Note: These third members are to be used with a mineral-based oil that has a range of EP140 Extreme pressure at a minimum. Do NOT use split grades such as 85/140 (these are not recommended). Failure to use the correct oil can result in gear damage and noise.