Helix Frame Crossmember

Helix Frame Crossmembers: The Foundation of a Serious Suspension Build

When it comes to custom chassis work, street rods, and classic car restorations, few components carry as much responsibility as the frame crossmember. It is the structural backbone that ties your front suspension geometry together, anchors your control arms, and keeps alignment consistent through every corner and road imperfection. Helix Suspension Brakes and Steering has built its reputation as a go-to source for builders who refuse to compromise, and their lineup of Frame Crossmembers reflects exactly that philosophy.

Why Helix Crossmembers Stand Apart

Helix Suspension Brakes and Steering is recognized as a leading manufacturer of aftermarket suspension, steering, and braking components for vehicles ranging from daily drivers to show cars. Their crossmember lineup is engineered with the same level of precision and durability applied across their entire catalog — and they offer crossmembers as standalone components, giving builders maximum flexibility.

One of the practical advantages Helix brings to the market is that their heavy-duty crossmembers are available for purchase without any additional components, making them ideal when you want to retain your existing control arms and simply upgrade the crossmember itself. This modular approach means you are not forced into buying a complete system when only one piece of the puzzle needs attention.

Product Highlights and Applications

Helix offers crossmembers across a range of builds and platforms. Some of the key products in this category include:

• Mustang II Universal Crossmembers — A cornerstone of the Helix lineup. These crossmembers are engineered for Mustang II IFS swaps, one of the most popular independent front suspension configurations in street rod and custom car building. Models are available in multiple widths, such as the Universal 58.5" configuration, to accommodate a wide variety of chassis widths.
• Universal Track Truck Crossmember Kits — For builders working on trucks, Helix offers purpose-built crossmember kits designed around front-steer rack configurations, providing the structural platform needed for a clean, performance-oriented front end.
• Rear Crossmembers with Shock Mounts — Constructed from 2" square steel tube, Helix rear crossmembers include integrated shock mount provisions and can be trimmed to fit a range of frame widths, making them a versatile choice for four-link and solid-axle rear suspension setups.
• Crossmember Bracing Kits — When installing tubular lower control arms on an existing Mustang II or similar crossmember, Helix’s bracing kits add critical horizontal and lateral support to lower control arm pins. These supports help maintain proper alignment geometry through the full range of suspension travel, particularly under cornering loads.
• Pin and Gusset Kits — All-steel construction, powder-coated for corrosion protection, these kits are essential when fitting aftermarket tubular lower control arms to an OEM-style crossmember where pinning and gusseting is not already pre-welded to the frame rails.

Built for the Builder

Helix crossmembers feature all-steel construction and powder-coat finishes for long-term rust and corrosion resistance — practical durability details that matter when a crossmember is buried deep in a chassis and expected to perform for years. Whether you are dropping a Mustang II front clip under a pre-war hot rod, refreshing a Tri-Five Chevy, or fabricating a custom truck chassis, Helix has engineered crossmember solutions that integrate cleanly with their broader ecosystem of control arms, coilover kits, and steering components.

With over 90 products in this category alone and deep roots in the custom and performance suspension world, Helix remains one of the most trusted names builders turn to when the foundation of the front end is on the line. Explore the full Helix brand page to see how crossmembers fit into a complete front suspension system, or browse all available Frame Crossmembers to find the right fit for your build.