Spohn Performance 399-D60-4130B Features:

Replace the flimsy factory torque arm on your 1982-2002 GM F-Body Camaro and Firebird with our durable adjustable tubular version and put the power where it belongs - the pavement!
Our 4130N chrome moly transmission mounted tubular adjustable torque arm is built from 1.25 in. x 0.095 in. wall 4130N chrome moly tubing with a heavy-duty CNC laser cut 3/8 in. thick steel rear housing mounting bracket. It bolts directly in place of the factory torque arm using all factory mounting locations and requires no welding or drilling.
It's equipped with an adjuster for changing pinion angle and a new, low deflection polyurethane front bushing.
If you want serious performance, handling, and traction when you're at the dragstrip, AutoX, or road racing; then you need a Spohn Performance fully adjustable tubular torque arm, here's what it'll do:
Attaches to the rear axle housing and controls rear end torque during acceleration, transferring this energy into the tires, increasing straight line traction. Reduces nose-dive during braking. Eliminates wheel hop. Increases side bite during corner exit acceleration. Provides for adjustable pinion angle. Bolt-on system does not require complete interior removal as with other kits.
Fitment Notes:
1982-1992 cars require the use of a factory torque arm bushing clamshell mount designed for bushing type 7-1609. If your vehicle is equipped with a 7-1611 type bushing, you will need to get the 7-1609 type clamshell (see image). This does not apply to 1993-2002 cars.
Rear end housing mounting bracket is designed to fit on a Strange Engineering Dana 60 rear end (All other rear ends use SKU 399)

• Constructed of 1.25 in. x 0.095 in. wall 4130N Chrome Moly tubing
• Front in.stub in. is reinforced by TIG welding a piece of 1.06 in. solid 4140 chrome moly into the i.d. of the front stub.
• TIG welded 4130N chrome moly threaded tube adapters
• Heavy-duty CNC laser cut 3/8 in. thick steel rear housing mounting bracket
• Polyurethane bushing front mount for minimal deflection and road noise isolation
• Mounts to the rear housing mounting bracket via two 3/4 in.-16 NFT x 5/8 in. bore x 7/8 in. thick solid steel rod ends. Solid rod ends, not spherical bearing rod ends, so noise is of no concern. Grade 8 - 5/8 in. bolts and 5/8 in. nylock nuts are used
• 4140 chrome moly pinion angle adjuster between the bottom rear solid rod end and the bottom rear torque arm tube allows for easy pinion angle adjustment. A simple turn of the wrench will give you 6 degrees of pinion angle adjustment
• Entire package is a complete bolt-in assembly using existing mounting points on the vehicle. No drilling or welding is required
• This is the strongest transmission mounted torque arm on the market = bullet-proof! This is a proven product being run on some of the fastest F-Bodies in the country
• Powder coated for a brilliant and durable finish
• Rear end housing mounting bracket is designed to fit on a Strange Engineering Dana 60 rear end (All other rear ends use SKU 399)