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Arrma Kraton 8S Rear Suspension Arms (2)
RPM Arrma Kraton 8S Rear Suspension Arms (2)
RPM Arrma Kraton 8S Rear Suspension Arms are a heavy duty upgrade for the Arrma Kraton 8S & Outcast 8S models. These 26 lbs, high-flying, dirt shredding, jump-killing machines are true monsters. If your A-arms aren’t up to the abuse this massive rig can dish out, look no further than RPM. These replacement rear A-arms are designed with the backyard basher in mind and can handle some serious abuse and come back for more.
RPM rear 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. RPM also moved the inner cross brace away from the chassis, eliminating the droop stop entirely. While this may seem counter-intuitive, the RPM test truck 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.
Made in the USA from RPM's trademark blend of ultra durable materials, you can’t go wrong with RPM!
- Sold in pairs
- Replaces stock ARRMA ARA330590
- Optional Mud Guards also available (RPM80642)
- Arrma Kraton 8S BLX
- Arrma Outcast 8S BLX
Pairs well with
Easy to use for beginners
Durable build for long-lasting fun
Quick recharge and extended range for all-day play
Perfect for pools, lakes, and calm rivers

Arrma Kraton 8S Rear Suspension Arms (2)
Product details
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Our RC vehicles and parts are crafted with cutting-edge tech and tested for durability. From high-speed drones to rugged RC cars and boats, every product delivers serious fun and unmatched reliability.
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Got Questions? We've Got Answers
What types of RC vehicles do you sell?
We offer a wide range of RC vehicles including airplanes, drones, helicopters, cars, trucks, boats, and a full selection of parts and upgrades for each.
Are your products ready to run (RTR) or require assembly?
Most of our models are RTR (Ready to Run) or RTF (Ready to Fly), meaning they include everything you need out of the box. Some kits may require minimal assembly—check the product description for details.
Do you offer replacement parts?
Yes! We stock replacement parts for most models we sell. If you’re not sure which part you need, contact our support team and we’ll help you find the right match.
How long does shipping take?
Orders typically ship within 1–2 business days. Delivery time depends on your location, but most customers in the U.S. receive their orders within 3–7 business days.
Do you ship internationally?
At the moment, we primarily ship within the U.S., but international shipping is available on select items. Please contact us for a custom quote.
























