Video time!

Here at Griggs Racing we understand your need for speed and heroic handling to achieve victory in the realm of competition motorsports.We understand it because we enjoy that feeling as well, so much so that we ourselves regularly give rides in our own cars to share the joy we have. We guess you could say we like to give back to our brothers and sisters in speed. So to give a taste of how our fully engineered and tested parts preform in the real world we submit this video for your viewing pleasure. (we suggest that this run be watched in full screen with good head phones or speakers)

This vehicle is a convertible which is owned by John Griggs and has a full GR40 kit including SLA, torque arm and watts linkage not to mention a little more oomph from the motor. the road is a CLOSED COURSE WITH SAFETY CREW AND A PROFESSIONAL DRIVER at the Virgina city hill climb a couple of years ago for the Ferrari club. John won... in his convertible mustang... with all due respect Mr. Enzo.  

Disclaimer! Do not attempt on public roads, without safety equipment, and a properly set up car.

TorqueArm Tech

Quick Facts about Torque Arm Kits

• Increases rear traction (forward bite)
• Decreases stopping distance significantly
• Engineered to maximize ground clearance
• Can be used without other rear suspension modifications
• Presets pinion angle
• Longer U-joint life
• The most driver friendly way to hook up power.

When used with a Panhard Bar or Watts Link the TorqueArm will substantially improve overall controllability of the vehicle regardless of power output because it:

• Allows for the removal of the rear upper control arms and quad-shocks on cars so equipped.
• Decreases snap-oversteer
• Corrects rear roll center location
• Decreases rear bind
• Inspires driver confidence

The TorqueArm when coupled with a Panhard bar or Watts link is the best in terms consistency of control and improved braking due to is constant and consistent tire loading regardless of ride height changes as the car encounters surface irregularities, cresting hills, etc. Compared to 3 link, 4 link, 5 link or IRS designs, the improvement in car control under power offsets any arguable merits of the other systems in a high powered rear drive vehicle that is without aid of high down-force aerodynamic devices. For this reason the same basic geometry is used on most Sprint Cars, Supermodifieds, Late Model Stock Cars, and other professional race cars around the world where rules allow.  

TorqueArm geometry would be used in more forms of road racing were it not for rules restrictions in various organizations such as TransAm, and NASCAR, or where aerodynamic packaging is the priority of design as in Indy cars and Formula 1.   

Griggs Racing was the innovator of TorqueArm design application to the Mustang in 1979, and has produced many versions and improvements since its inception.  Currently there is one basic off the shelf versions of Griggs Racing TorqueArms; Severe Duty. The severe Duty TorqueArm is intended for most applications; from street use on cars with stock engines and transmissions to cars with over 500 RWHP and sticky tires that are drag raced, brutally road raced, autocrossed, or similarly abused. The structure of the severe duty TorqueArm consists of the appropriate appendages for the model and axle used, attached securely to the severe Duty arm.

These are not hard and fast rules and when in doubt you should contact us for specific recommendations for your application.  The Severe Duty TorqueArm is the most popular and Bruce Griggs races his AIX cars on the severe Duty TorqueArm and his cars exceed the power level described above and still win while being completely durable race after race. If absolute durability regardless of abuse is the priority, you should choose the Severe Duty unit which is the most popular or contact engineering@griggsracing.com for a specific recommendation for your application.

Griggs Dedication to Customer Service

There are literally thousands of suspension and performance related components that Griggs Racing offers to service our customers. This multitude of parts are necessary to accommodate so many different systems necessary to perfect our customers performance vehicles for any given purpose, however economies of scale are not in our favor.  That is why delivery of products can some times be delayed being that demand has been very hard to predict for the past few years. 

To provide the best possible service and quickest delivery we have added manpower and implemented the first elements of an improved inventory system which has already proven to decrease delivery time. Our ultimate goal is to ship all orders within 24 hours. Although we are not quite there yet, we are well on our way. However, with the popularity of some kits, its difficult, at best, to keep some items stocked and ready for immediate shipment. In events like these we will notify our customers via their local dealer or their sales representative and every effort will be made to fullfill the order in as timely a fashion as possible. Again our ultimate goal is to ship all orders within 24 hours and we have complete confidence that this goal will be achieved shortly. We appreciate the understanding of our customers and our readers in this regard. 


In the mean time call up your nearest Griggs Racing dealer and ask about our venerated TorqueArm for your S-197 Mustang. Trust us, you will love what it does for your corner carver.