RPM Black Kraton 8S Upper & Lower Front Right Suspension Arm Set

RPM's lower A-arms have a triple beam style construction designed to spread impact energy across all three beams. Each beam’s cross-section is a whopping 5/8” (15.8mm) tall x 3/8” (9.5mm) wide. These massive beams reduce unwanted flex during normal suspension movement, yet allow impact-absorption during those not-so-perfect landings and crashes. We also moved the inner cross brace away from the chassis, eliminating the droop stop entirely. While this may seem counter-intuitive, RPM's test truck’s chassis was bent at the droop stops, clearly illustrating that extreme impacts were too much for the chassis plate to handle. After all, there’s nothing worse than a bent chassis.

RPM's upper A-arms use a dual beam construction where each beam is a massive 1/2" (12.7mm) tall x 3/8” (9.5mm) wide. We eliminated the tube shape over the hinge pin to eliminate built-in molding stresses while beefing up the leading edge hinge pin support to add some much needed strength and durability.

Both upper and lower A-arms are molded with fingernail slots that allow easy access to remove the aluminum support ring at the pivot ball. Made in the USA from RPM's trademark blend of ultra durable materials, you can’t go wrong with RPM!

Tech Notes: RPM A-arms for the ARRMA Kraton 8S are sold as one upper and one lower in each kit. One left (#81522) & one right (#81562) will be needed to complete the front end of one vehicle. RPM A-arms replace the upper A-arms from stock ARRMA #ARA330561 and the lower A-arms from stock #ARA330589.

Installation Notes: Like stock A-arms, RPM Kraton 8S versions are sold without threads. If the pivot ball hole is difficult to thread using the pivot ball, RPM recommends thread tapping (tap not included) the hole for 2 – 3 threads, but do not tap any further. Additional cut threads will negate the thread-locking capability of RPM's materials.

Compatibility: RPM do not recommend use of this product on thr EXB version of the 8s models. The EXB spring perch will cause fitment issues with the sway bar and lower shock mount, therefore requiring modification to the arms for proper fitment.