Description
More Articulation with Better Radius Arm Geometry
The factory radius arms on a 1966–1977 Ford Bronco are short, which forces the front axle to travel through a relatively tight arc as the suspension cycles. When you’re building an Early Bronco for more suspension travel and better off-road performance, the factory radius arm geometry becomes a limitation.
That’s why we built our Early Bronco Extended Radius Arms 10.5″ longer than stock.
The additional length allows the front axle to travel through a larger arc as the suspension cycles, improving articulation and creating smoother suspension movement through rough terrain. We also designed the arms to provide frame clearance at full bump, allowing the suspension to use its available travel without the radius arms becoming the limiting factor.
Built for Hard Off-Road Use
Strength was just as important as geometry.
The main structure of each radius arm is fabricated from massive 2″ x .250-wall DOM tubing and reinforced with .188″ 1020 CR steel plate. At the frame end, a 1-1/4″ FK heim joint connects the radius arm to our fabricated 1/4″ steel pivot box.
At the axle, we reuse the original Ford radius arm “C” ends to retain the factory-style connection to the front axle.
We also build 5° of caster into the radius arms to help correct caster on Early Broncos running suspension lift kits.
The result is a heavy-duty radius arm system designed around increased articulation, improved suspension geometry, and the strength required for serious off-road use.
Made in the USA.
Key Features
- 10.5″ longer than factory radius arms
- Larger suspension travel arc
- Designed for improved articulation
- Designed to clear the frame at full bump
- 5° of caster built into the radius arms
- Helps correct caster on lifted Early Broncos
- 2″ x .250-wall DOM main tubing
- Reinforced with .188″ 1020 CR steel plate
- Massive 1-1/4″ FK heim joints
- 1/4″ plate fabricated pivot boxes
- 17-4 stainless steel misalignment spacers
- MIG-welded construction
- Grade 8 hardware
- Welding required for installation
- Made in USA
Kit Includes
- (2) Extended Radius Arms
- (2) Fabricated Pivot Boxes
- (2) FK 1-1/4″ Heim Joints
- 17-4 Stainless Steel Misalignment Spacers
- Grade 8 Hardware
Available Shock Tab Options
Single Shock Tabs + Limit Strap Tab
Single-shock mounting tabs welded to the radius arms with an additional mounting tab for a limit strap. Necessary Grade 8 hardware is included. Limit straps are not included.
Dual Shock Tabs
Dual-shock mounting tabs welded directly to the radius arms with the necessary Grade 8 hardware included.
Fitment
1966–1977 Ford Bronco
Installation
Welding is required.
The supplied radius arm pivot boxes must be properly positioned and welded to the frame. Refer to the Solo Motorsports Radius Arm Pivot Box Location installation guide before installation.
Core Charge
A $250 refundable core charge is included in the purchase price.
The factory Ford radius arm “C” ends are reused in the construction of these extended radius arms. Return your acceptable stock Early Bronco radius arms to Solo Motorsports to receive the $250 core refund.
Core Charge is included in price (read more about Core Charge)