RPM Rear A-Arms for Electric Traxxas Rustler Stampede 2WD Green RPM80184

Overview

The RPM GREEN REAR A-ARMS FOR TRAXXAS ELECTRIC STAMPEDE OR RUSTLER are precision-engineered suspension upgrades designed for RC enthusiasts who demand better performance from their 2WD electric Traxxas models. Whether you're a weekend basher enjoying RC cars in the UK or a competitive racer pushing your setup to its limits, these rear A-arms deliver a significant performance upgrade over factory stock components. RPM has engineered these arms to be simultaneously stronger, more durable, and lighter than the original Traxxas parts — a rare combination that demonstrates expert suspension design.

If you own an electric Rustler or Stampede and want to improve your RC car's handling, durability, and responsiveness, these green rear A-arms are an essential upgrade. The striking green colour matches RPM's design aesthetic and allows you to customise your RC vehicle's appearance whilst gaining genuine performance improvements. These are not cosmetic parts; they represent a substantial engineering upgrade that will transform how your RC car feels on the track or trail.

Available exclusively in green, these A-arms are sold as a complete pair — one left rear and one right rear per package — ready to drop into your electric Stampede or Rustler 2WD chassis. When combined with RPM's matching front A-arms, the total suspension upgrade provides remarkable improvements in handling precision and unsprung weight reduction that serious RC enthusiasts will immediately notice.

Key Features

• 7 grams lighter per arm — Each arm eliminates 7 grams of weight compared to stock, resulting in 14 grams of total unsprung weight reduction per pair, which dramatically improves suspension responsiveness and cornering performance on your RC car.
• Enhanced durability without added weight — RPM engineered these arms to be stronger and more durable than stock versions without sacrificing strength or adding flexibility, meaning you get superior crash protection and longevity without compromising suspension dynamics.
• Reduced suspension slop — Over 0.030 inches (1/32 inch) of slop has been eliminated from the inner arm mount, and more than 0.010 inches from the outer hinge pin, creating an ultra-smooth, slop-free suspension system that translates to more consistent and predictable handling.
• Adjustable shock mount locations — The shock mount holes have been carefully repositioned to allow more noticeable tuning adjustments when using the inner or outer shock mount positions, whilst the centre hole remains in its stock location for compatibility.
• Complete pair included — You receive both left rear and right rear A-arms in a single package, ready for immediate installation into your electric Rustler or Stampede.
• Available in striking green — These A-arms are injection-moulded in vibrant green, allowing you to customise your RC car's appearance and match other RPM components on your chassis.

Technical Performance

The RPM GREEN REAR A-ARMS represent a masterclass in suspension component engineering. Built with RPM's proprietary polymer compound, these arms deliver superior impact resistance and durability compared to standard Traxxas stock parts. The weight reduction of 7 grams per arm is achieved through intelligent material thickness and design optimisation, not by making the arms thinner or weaker. This is critical for 2WD electric RC cars like the Stampede and Rustler, where unsprung weight directly affects how quickly the suspension responds to track surface changes. By reducing unsprung weight by 14 grams total, your RC vehicle will have noticeably improved suspension action, faster body roll recovery, and more consistent grip through corners. The elimination of suspension slop is equally important — when you remove 0.030 inches from the inner arm mount and 0.010 inches from the outer hinge pin, you create a suspension system that responds instantly to your steering inputs without any play or delay. The shock mount adjustment allows competitive RC drivers to fine-tune their suspension geometry; using the inner or outer holes provides meaningful geometry changes that won't be possible with stock arms. These arms are designed to work with standard Traxxas suspension components, including factory shocks, springs, and anti-roll bars. When upgrading your electric Rustler or Stampede for better handling, these rear A-arms should be paired with RPM's front A-arms for maximum benefit — the combined weight savings exceed 24 grams (almost one full ounce), which is substantial for a small RC car and will be immediately noticeable in handling response and jump stability.

What's in the Box

• 1x RPM Rear Left A-Arm (green)
• 1x RPM Rear Right A-Arm (green)

Frequently Asked Questions

• Will these rear A-arms fit my electric Traxxas Rustler or Stampede? — Yes, these RPM80184 arms are specifically designed for the 2WD electric versions of the Traxxas Rustler and Stampede. They are not compatible with 4WD versions or nitro models. Always verify you have the electric 2WD variant before purchasing.
• How much weight will I actually save with these A-arms? — You will save 7 grams per arm, totalling 14 grams of unsprung weight reduction with the rear pair alone. If you also install RPM's front A-arms, your total weight savings exceeds 24 grams (almost a full ounce), which is very significant for a small RC vehicle and will improve handling noticeably.
• Are these A-arms stronger than stock Traxxas parts? — Yes, RPM's engineering allows these arms to be both stronger and more durable than factory stock versions whilst also being lighter. They accomplish this through advanced material science and intelligent design, not by making the arms thicker or heavier.
• What is the advantage of the reduced suspension slop? — Eliminating over 0.030 inches from the inner arm mount and 0.010 inches from the outer hinge pin creates a suspension system with virtually no play or movement between components. This means your suspension responds instantly to bumps and steering input, resulting in more predictable handling and better overall control of your RC car.
• Can I use these with my original Traxxas shocks? — Yes, these A-arms are designed to work with standard Traxxas suspension components, including factory shocks, springs, and suspension geometry. However, the shock mount holes have been adjusted slightly to allow more noticeable tuning adjustments, so you'll have additional options for fine-tuning your setup.
• Should I upgrade just the rear or front and rear together? — Whilst these rear A-arms alone will provide measurable improvements, RPM recommends pairing them with matching front A-arms for maximum benefit. The combined upgrade delivers superior weight distribution, more consistent handling across both axles, and a complete suspension upgrade that transforms how your RC car feels.
• What colour options are available? — These A-arms are available in green, as well as black, blue, red, and pink, allowing you to match your preferred colour scheme or coordinate with other RPM components on your Rustler or Stampede.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the RPM GREEN REAR A-ARMS FOR TRAXXAS ELECTRIC STAMPEDE OR RUSTLER RPM80184 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.