NOLATHANE, REVOLUTION Radius Arm

Radius arms are the complete front radius arm assemblies used to replace bent, cracked or worn-out radius arms on applicable solid front axle 4WD platforms. The front radius arms connect the front axle housing to the chassis and are the primary longitudinal locating devices for the front axle, controlling the arc through which the axle moves under suspension travel and directly determining front caster geometry. On solid front axle platforms the radius arm is a high-load structural component that is subject to the impact forces, bending loads and accumulated stress of sustained off-road and towing use throughout the vehicle's service life.

When a radius arm is bent from a hard impact, cracked through material fatigue, or worn to the point where arm integrity is compromised, the correct repair is full arm replacement rather than bushing service alone. The radius arm range covers an OEM Plus front radius arm set supplying both left and right arm assemblies in a single purchase for applicable solid front axle 4WD platforms, built to OEM specification or better and pre-fitted with bushings at the applicable inner mount positions.

Why Upgrade Suspension?

A bent or structurally compromised radius arm cannot be corrected by bushing renewal or geometry hardware alone, because the arm geometry itself has shifted from the correct specification at the moment the arm was damaged. A bent radius arm introduces a caster error that is baked into the arm structure, produces uneven front end geometry between left and right sides, and in severe cases introduces lateral and longitudinal axle positioning errors that affect handling, tire wear and steering precision in ways that no alignment adjustment can correct while the damaged arm remains in place.

Replacing both arms together with correctly specified OEM Plus assemblies ensures the front axle is located with identical geometry on both sides, restoring correct and symstandardal caster, correct longitudinal axle position and correct front end handling balance from the first drive after installation.

Radius Arm Range

The radius arm range includes:

• OEM Plus Front Radius Arm Sets: Complete OEM Plus specification front radius arm sets supplying both left and right arm assemblies in a single purchase for applicable solid front axle 4WD platforms, built to OEM specification or better with bushings pre-fitted at the applicable inner mount positions, ready for direct installation as a complete arm replacement.

Why Purchase Radius Arms?

When a radius arm has been bent, cracked or structurally compromised, full arm replacement is the correct and only complete repair. An OEM Plus arm set that supplies both arms as a matched pair ensures the replacement is completed symstandardally on both sides, eliminating the geometry imbalance that replacing only a single damaged arm can introduce when the opposing arm has also accumulated hidden stress or minor damage from the same impact or sustained use.

For shops and experienced DIY users completing front suspension repairs on applicable solid front axle platforms, an OEM Plus arm set provides a pre-built, correctly specified replacement that is ready to install with the bushings already fitted, reducing installation complexity and ensuring the arm meets or exceeds the factory specification from the first installation.

Compatible Vehicles

Radius arms are compatible with:

• Applicable solid front axle 4WD trucks and SUVs requiring OEM Plus front radius arm renewal on both left and right sides to restore correct front axle longitudinal location, caster geometry and front end handling balance following arm damage or advanced structural wear.

Installation and Support

The OEM Plus front radius arm set installs at the front radius arm chassis and axle housing mount positions on the applicable solid front axle platform. Installation time is approximately four hours for the complete set. An installation guide is included. Following installation the vehicle must be presented for a wheel alignment to confirm and set front caster within specification. For additional technical assistance, a dedicated support team is available to confirm correct product fitment for the specific platform and radius arm configuration.

Repair and Upgrade

OEM Plus front radius arms are manufactured from quality materials engineered to meet or exceed the structural specification of the factory arms they replace. The OEM Plus designation ensures the arms are correctly dimensioned for the applicable platform, providing the correct arm length and pivot geometry to maintain correct front axle longitudinal location and caster angle under the sustained structural loads, road shock and environmental exposure of everyday, towing and off-road use. Bushings are pre-fitted at the applicable inner mount positions.

Who Radius Arms Are For

Radius arms are a practical solution for:

• Professional shops completing front suspension repairs on applicable solid front axle 4WD platforms where one or both radius arms have been bent, cracked or structurally compromised by a hard impact, requiring full arm replacement to restore correct front axle geometry, caster angle and front end handling balance.
• 4WD owners completing front axle structural repairs on applicable platforms following off-road damage or advanced arm wear, where replacement of both arms as a matched OEM Plus pair is the correct approach to restoring symstandardal front end geometry and correct longitudinal axle location.

The right radius arm set restores correct front axle longitudinal location and caster geometry on both sides simultaneously, eliminates the geometry imbalance that a damaged arm introduces, and delivers correct, symstandardal and stable front suspension behavior from the first drive after installation.

Shop Radius Arms

Explore the radius arm range and find the right set for your vehicle. With an OEM Plus front radius arm set supplying both left and right arm assemblies for applicable solid front axle 4WD platforms, you can restore correct front axle geometry and complete every radius arm replacement with confidence.