Product description

RPM 4S Kraton/Outcast Rear Suspension Arm Set (2)

This is an optional set of RPM 4S Kraton and Outcast Rear Suspension Arms, intended for use with ARRMA Kraton and Outcast kits and designed for strength and durability with features to better enhance performance. These A-arms deliver excellent slop elimination by reducing the amount of movement of the A-arm at the hinge pins, providing for better steering response and more consistent camber, caster and toe angle settings. The addition of a second shock mount hole further out on the arm provides a lower profile suspension set-up. This shock position allows the suspension to lay down a little further, dropping the ride height for a lower center of gravity and better cornering stability. All RPM A-arms are molded from their nearly indestructible blend of engineering grade nylons for performance you can rely on when conditions are at their worst. These arms are almost 25% thicker and able to take much more damage than stock.

Engineered for Speed. Built for Control.

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.

Performance You Can Trust

Join thousands of RC enthusiasts who count on ParkFlyers for top-tier quality, responsive customer support, and an unbeatable collection of parts and models.

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.

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