Will these fit my 1972 Plymouth Duster?

Yes. The fitment list covers the Duster from 1970 to 1977, along with the Dart, Valiant, Barracuda, Scamp, Savoy and Fury for the listed years. Check your model and year against the list before ordering.

Do I need to weld anything?

No. The bars are fully bolt-on and need no cutting, welding or suspension modification. You do need to set the preload and torque the hardware correctly.

Are instructions included?

No. The kit ships without instructions, so plan on sourcing torque specs and a setup guide from a service manual or a Mopar forum.

What does adjustable preload do?

Preload sets how hard the bars press against the spring, which changes how quickly they resist axle wrap. More preload means a firmer launch but a stiffer street ride.

Will these work with my existing shocks?

The kit includes shock mounts, so check that your shocks match the mount style and length the brackets accept. Confirm the mounting position before installing.

Is this legal in California?

The listing carries a California Prop 65 warning, so check what the warning covers before buying if you are in California.

Where is the Traction Bars and Shock Mounts cheapest?

At Deal.ai, for $387.56, as of our latest check.

Traction Bars and Shock Mounts

Sold and shipped by Deal.ai

$387.56Free shipping

Default: 78738039

Arrives about Nov 14–23, from a US warehouse

No returns for change of mind. If it arrives damaged or isn't what you ordered, or never arrives, report it within 30 days and we refund you in full.

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Price facts

Last seen at $387.56 at Deal.ai on Nov 9.

Our take on the Traction Bars and Shock Mounts

These are bolt-on traction bars with integrated shock mounts for classic Mopar A-body and B-body cars, including the Dodge Dart, Plymouth Duster, Valiant and Barracuda. They clamp to the leaf springs and stop axle wrap under hard acceleration, which helps hold pinion angle and improve launch. The preload is adjustable, so you can tune how hard the bars bite. They suit drag racers and hot-rodders building a leaf-spring car, and they cost far less than a four-link or ladder-bar conversion. The trade-off is a stiffer, noisier ride and no instructions in the box.