LOS-1887 Rear Arm Set, Stiffezel: 22S Sprint

This product is a direct replacement rear suspension component for the Losi 22S Sprint Car platform, designed to improve stiffness and handling precision in dirt oval racing applications. The Stiffezel Rear Arm Set (LOS-1887) replaces the stock rear suspension arms with a more rigid composite material that reduces flex under load, giving the car sharper response and improved stability during high-speed cornering. It is specifically tuned for the 22S Sprint chassis and is intended for racers who want more consistent rear-end behavior on high-grip or rough oval tracks. By limiting suspension arm deflection, it helps maintain more predictable traction and alignment under acceleration and corner exit.

Losi LOS-1887 Rear Arm Set Stiffezel 22S Sprint

Features:

• Designed specifically for the 22S Sprint Car platform
• Stiffezel composite construction for increased rigidity
• Reduces rear suspension flex under high load
• Improves cornering stability on dirt oval tracks
• Enhances throttle-on exit consistency
• Direct bolt-on replacement for stock rear arms
• Tuned for racing applications rather than general bashing
• Helps maintain more precise rear wheel alignment under stress

Specifications:

• Part Type: Rear suspension arms
• Material: Stiffezel reinforced composite
• Application: Losi 22S Sprint Car
• Position: Rear suspension
• Fitment: Direct replacement (no modification required)
• Intended Use: Dirt oval / sprint car racing tuning component

What's Included:

• (2) Stiffezel rear suspension arms
• Installation hardware (as included from factory packaging)

Community Feedback:

RC oval racers generally view Stiffezel arms as a simple but effective tuning upgrade for the 22S Sprint platform. Drivers note improved consistency in corner exit behavior and reduced rear-end “flex” when applying throttle on loose or partially slick tracks. Some users mention that the stiffer feel can make the car slightly less forgiving on rough surfaces, but most agree it helps the chassis respond more predictably in competitive dirt oval setups where precision matters more than comfort.