UMI Tunnel Brace Mounted Adjustable Torque Arm w/Driveshaft Loop

Track abuse, street abuse, or just flat-out abuse, this torque arm is designed to handle it all! Eliminate unwanted traction problems by adding a UMI Performance Tunnel Braced Mounted Torque Arm. This aftermarket torque arm replaces the flimsy weak stock torque arm adding strength, rigidity and eliminating flex. Our torque arm design relocates the front torque arm mounting point off the transmission tail shaft protecting the transmission and preventing damage. A shorter torque arm improves weight transfer on acceleration. General Motors tail shaft mounted design works great for a stock driven vehicle however it is not designed to take abuse. This set-up bolts to existing floor pan holes using 0.500” thick mild steel CNC machined mounting plates and metric grade 10.9 hardware. The complete cross brace is constructed of 0.120” thick rectangular tubing and attaches to the torque arm using 0.250” thick mild steel mounting pivot plates with Grade 8 hardware. The torque arm is attached to the supplied cross brace using an Energy Suspension polyurethane bushing set-up on both the supplied cross brace and torque arm (See Picture Below). Polyurethane was chosen as a mounting point to keep road noise at a minimum and eliminate unwanted “clunks” found with other set-ups available. The grease-able polyurethane bushings absorb road irregularities and protect noise from entering the passenger compartment. The rear mounts feature 0.375” thick CNC machined mounting plates and are appropriately drilled to fit your stock rear as well as aftermarket 12-Bolt and 9” Rear-end housings. This set-up requires no welding or drilling and can be installed with basic hand tools; this is a complete bolt-in design. 

This unit is designed with a drop down front cross member to clear most to all aftermarket header/y-pipe set-ups on the market. This system has been confirmed to clear with Hooker Header/y-pipe system, American Racing headers /y-pipe, Pacesetter headers with Pacesetter y-pipe and TSP y-pipe also SLP header/y-pipe system as well as many others.

Front Drive Shaft Loop- This item is supplied with a NHRA legal drive shaft loop. The front drive shaft loop has been confirmed to clear with the following systems listed above; it will also clear other popular header/y-pipe systems. - SLP, FLP, Hooker and Pacesetters with Pacesetter y-pipe and Texas Speed y-pipe.

Torque Arm Benefits: 

- Removes torque arm from transmission tail shaft protecting from damage
- Eliminates wheel hop and solves traction problems
- Reduces front end nose dive during braking 
- Allows for on-car pinion angle adjustments
- Polyurethane bushings designed to keep road noise at a minimum
- Front mounting point utilizes a grease-able pivot point 
- Bolt-on design requires no welding or drilling!

Build Features:

- Constructed of 1.250” x 0.120” DOM Seamless Steel Tubing
- Front Cross Member uses 0.120” x 2.000” Rectangular Tubing
- TIG Welded 4140 Chrome Moly Tube Adaptors 
- On-Car Adjuster Built using 4140 Chrome Moly Steel and Heat Treated 
for Maximum Strength
- Front Pivot Mount is supplied with Grade 8 Mounting Hardware and 
Locking Nuts 
- All Polyurethane Bushings are Grease-able to Prolong Bushing Life
- All Mounting plates are CNC Machined to insure hole to hole accuracy 
- Rear Mounting Plates use 0.375” Thick Mild Steel and are designed to 
fit Stock as well as 12- Bolt and 9” Rear-End Housings. 
- Rear Mounts feature Solid QA1 ¾” Rod Ends and are attached using 
Grade 8 Hardware
- Brilliant Durable Powder Coat 

Chrome Moly- Chrome Moly version uses 1.250" x 0.095" 4130 Chrome Moly steel feature 100% TIG welded process. This adds increased strength and reduces product weight, recommended for vehicles running 10.50’s and faster in the ¼ mile. 

Rear Torque Arm Hardware Kit- We highly recommend purchasing a new hardware kit if running this torque arm on a stock rear-end, Strange or other similar rear-ends that use a straight through bolt design. OEM torque arm bolts will work however are slightly too short and may not work correctly. If you are running a Moser Engineering 12-Bolt rear-end this kit is not needed, you must reuse hardware supplied by Moser Engineering. This kit however is recommend for the Moser 9”.