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Home » Spohn Performance

Product ID: 782
Front Lower A-Arms
Front Lower A-Arms
In May of 2014 we released these RRx Series™ tubular front lower a-arms for the 1978-1987 GM G-Body that set a higher standard of performance and quality. They are truely the new standard of comparison.

All of our RRx Series™ tubular a-arms are designed using aerospace level technology and design tools. First we create a 3D scan of the factory a-arm using a FARO® ScanArm™ with a 3D laser scanning attachment. Then we use that 3D model of the factory a-arm as our foundation for creating a tubular version inside of our Solidworks® 3D design software.

After we're done designing the a-arm in Solidworks®, we then use that 3D data to design the jig that we will use to build the a-arms. The jig parts are then CNC laser cut and formed on an 8 axis CNC press brake. The final result is dimensional accuracy to within .005"!

When we designed our RRx Series™ tubular front lower control arms, we had two goals in mind. One was to provide the performance capabilities needed for the toughest race tracks, the second was to provide the strength and durability required for the demands of a daily driven vehicle.

We're proud to say that we have accomplished both. If you're looking for the strongest, most rigid, and best performing front lower a-arms for the GM G-Body cars, you just found them!

Our RRx Series™ front control arms are a true "A" arm rather than a "V" arm. This increases the arm's rigidity and equalizes the forces delivered in to the frame. These a-arms are completely gusseted to provide for maximum rigidity and durability, as well as zero flex.

The CNC machined coil spring mounting tube is completely surrounded and tied in with CNC laser cut 3/16" steel gussets that are solid MIG welded. We also 100% TIG weld on CNC laser cut and formed 3/16" steel bushing tube gussets for maximum strength and durability.

Another feature of our RRx Series™ tubular front lower a-arms that is missing from most of our competitor's products is a coil spring retention tube. We weld a short piece of 4" o.d. tube to the base of our coil spring mount for the coil spring to slide over. This locks the coil spring in place and keeps it perfectly centered inside of the a-arm

Finally, we include new spherical front sway bar end links. Our front sway bar end links connect to the a-arm with a self-lubricating Teflon® lined chrome moly spherical joint that provides a bind-free connection for maximum handling performance. The top of the end link connects to the front sway bar with low deflection polyurethane bushings.
Price: $489.00

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