RPM Front or Rear A-Arms for Traxxas Slash 4x4 Rustler Stampede Green RPM80704

Overview

Upgrade your Traxxas Slash 4x4, Stampede 4x4, or Rustler 4x4 with RPM Front or Rear A-Arms in striking green. These premium suspension components are engineered to deliver superior performance, durability and style for 1/10 scale RC car enthusiasts across the UK. Whether you're bashing at the local track or competing in organised events, these replacement A-arms represent a significant upgrade over factory Traxxas parts, offering tighter tolerances, reduced suspension slop and measurably improved durability without adding weight to your chassis.

RPM has earned a reputation as one of the most trusted RC parts manufacturers in the world for good reason — every product is designed, manufactured and produced to exacting standards using ultra-durable nylon compounds. These A-arms are no exception. Built to withstand the punishment of serious RC driving, they combine engineering excellence with genuine style, allowing you to customise your ready to run RC truck with genuine colour coordination. The green finish coordinates perfectly with Monster Energy and Kawasaki inspired paint schemes, or simply stands out as a bold statement of quality on any Traxxas platform.

For UK RC car enthusiasts seeking to eliminate suspension slop, reduce maintenance headaches and add colour personality to their fleet, these RPM A-arms deliver measurable improvements in handling feel and longevity. Each package contains one matched left and one right A-arm, and you'll need two packages to complete a full vehicle front and rear upgrade.

Key Features

• Eliminates suspension slop — RPM engineering team tightened tolerances around the hinge pins to create a more responsive, predictable suspension system that translates directly to better cornering grip and more consistent handling characteristics across multiple runs.
• Reduced fore and aft movement — By improving clearances at both the inner hinge pin and axle carrier by better than 90 per cent compared to stock, these A-arms create a tighter suspension geometry that reduces unwanted deflection under acceleration and braking.
• Weight reduction of 6.5 grams per arm — At nearly 7 grams lighter than factory Traxxas A-arms, switching to RPM components saves almost one full ounce of unsprung mass per vehicle, improving acceleration response and reducing rotational inertia for sharper handling.
• Superior durability through advanced nylon blend — Manufactured in RPM's proprietary ultra-durable nylon compound and backed by an industry-leading limited lifetime warranty against breakage, these parts are built to survive the most demanding bashing and racing conditions.
• Aesthetic appeal with 30-degree design edges — RPM's traditional A-arm design features distinctive 30-degree leading and trailing edges that provide a premium appearance whilst maintaining full functional advantage.
• Massive shock and sway bar bosses — Oversized mounts for shocks and anti-roll bars provide secure attachment points and allow for optimised suspension tuning across a wide range of driving conditions.
• Available in vibrant green finish — Perfect for Traxxas Monster Jam builds, Monster Energy schemes, Kawasaki green paint jobs or standalone customisation, the green colour is moulded throughout the nylon compound for durability.
• American engineering and manufacture — Designed and produced in the USA to exacting quality standards, ensuring consistent performance and genuine warranty support.
• Direct factory replacement — These A-arms replace stock Traxxas parts #3655R (rear) and #3655X (front), making installation straightforward on existing vehicles.

Technical Performance

RPM Front or Rear A-Arms represent a comprehensive suspension upgrade engineered through careful analysis of stock Traxxas components and years of customer feedback from the RC community. The critical improvement lies in hinge pin tolerance — by tightening the clearances around these pivot points, RPM eliminates the lateral and rotational slop inherent in factory parts. This translates to more direct steering input response and more predictable suspension articulation during cornering, acceleration and braking events. The fore and aft movement reduction of 90 per cent or greater is achieved through redesigned geometry at the inner hinge pin connection point and at the axle carrier interface, creating a suspension system that maintains consistent ride height and camber angle even under aggressive driving loads.

Build quality throughout these components reflects RPM's manufacturing excellence. Each A-arm is injection moulded in a proprietary blend of high-impact nylon compounds specifically formulated for RC applications, providing superior impact resistance compared to standard engineering plastics. This material selection means the parts can absorb crashes and impacts that would snap lesser components, yet remain light enough to reduce unsprung mass. The 6.5-gram weight saving per arm versus factory Traxxas #3655X components is significant in the 1/10 scale RC vehicle context — removing nearly one ounce of unsprung weight improves acceleration feel, reduces gyroscopic effects during rotation, and enhances overall handling responsiveness. The oversized bosses moulded into the shock tower and sway bar mounting points are not merely decorative; they provide wider bearing surfaces for hinge pins and bolts, distributing loads more evenly and reducing stress concentration that leads to premature failure. This engineering approach has proven effective across thousands of customer vehicles operating in conditions ranging from weekend backyard bashing to organised RC racing competition.

What's in the Box

• One left A-arm
• One right A-arm
• Green finish

What You Need to Complete

• One additional package of RPM A-arms (RPM80704) to complete front and rear coverage on your vehicle — each package contains left and right arms for one axle only
• Your existing Traxxas Slash 4x4, Stampede 4x4, or Rustler 4x4 1/10 scale RC truck

Frequently Asked Questions

• Will these RPM A-arms fit my Traxxas Slash 4x4? — Yes, these RPM A-arms (model RPM80704) are specifically engineered to fit the 1/10 scale Slash 4x4, Stampede 4x4, Rustler 4x4 and Rally 4x4 vehicles. They replace stock Traxxas parts #3655R and #3655X. Important note: these A-arms will not fit the Fiesta ST Rally variant, so please verify your exact model before ordering. If you own an older model Rally or the LCG Slash 4x4 variant, you may require RPM part #80702 instead.
• How much weight do I save by switching to RPM A-arms? — Each individual RPM A-arm weighs 6.5 grams less than the factory equivalent Traxxas #3655X. Since a complete vehicle suspension upgrade requires four A-arms total (two packages), you'll remove approximately 26 grams of weight from your vehicle overall. This weight saving specifically reduces unsprung mass — the weight not supported by your suspension springs — which directly improves acceleration response, handling precision and reduces rotational inertia during turns.
• Do I need to buy two packages to get a complete suspension upgrade? — Yes, each package of RPM80704 includes one matched left A-arm and one right A-arm, which is sufficient for one axle (front or rear). Your Traxxas short course truck has two axles requiring four arms total, so you will need to purchase two packages to complete a full front and rear suspension upgrade. This is standard practice in the RC industry and applies to all similar products.
• What makes RPM A-arms more durable than factory Traxxas parts? — RPM uses a proprietary blend of high-impact nylon compounds specifically formulated for high-stress RC applications, combined with improved design geometry that distributes impact loads more effectively. The enlarged shock tower and sway bar bosses create wider bearing surfaces that reduce stress concentration. Equally important is the tighter tolerance engineering that eliminates slop and reduces flex under load. All RPM A-arms are backed by an industry-leading limited lifetime warranty against breakage, giving you genuine peace of mind during competitive use or aggressive bashing.
• Will fitting RPM A-arms improve my handling? — Yes, the handling improvement is noticeable and measurable. By eliminating slop in the suspension system and reducing fore and aft movement at both the hinge pins and axle carriers by over 90 per cent, these A-arms create a tighter, more responsive suspension platform. You'll notice improved cornering grip, more direct steering input feel, more consistent handling across multiple runs, and a tighter overall chassis feel. These characteristics appeal to both casual weekend bashers seeking more confidence behind the wheel and competitive racers chasing lap time improvements.
• Are these parts suitable for beginners? — Absolutely. Whilst these are premium performance parts typically appreciated by experienced RC enthusiasts, the installation process is straightforward on any Traxxas Slash 4x4, Stampede 4x4, or Rustler 4x4. Simply remove the factory A-arms by unbolting the hinge pins and axle carrier bolts, then install the RPM replacements using the same attachment points. No special tools or expertise is required. For beginners seeking to improve their vehicle's durability and handling characteristics, this represents an excellent first suspension upgrade.
• What colour options are available? — RPM80704 comes in green as specified, but the green A-arms are part of a larger colour palette. RPM also manufactures these A-arms in black, blue and red finishes, allowing you to match various Traxxas paint schemes or create your own custom colour coordination. All colours use the same durable nylon compound and engineering, so colour selection is purely aesthetic.
• Will fitting new A-arms require suspension tuning adjustments? — The RPM A-arms use the same attachment points as factory Traxxas arms, so no geometry changes occur. However, due to the tighter tolerances and reduced flex, some drivers find their truck handles differently and may wish to fine-tune suspension settings like spring rates, anti-roll bar stiffness or ride height to suit their personal preferences. This is entirely optional and depends on your current setup and driving style.
• How do RPM A-arms compare to other aftermarket options available in the UK? — RPM components are manufactured to exceptionally high standards in the USA and benefit from over two decades of RC engineering expertise. The proprietary nylon blend, improved tolerance engineering, and comprehensive warranty distinguish RPM parts from budget alternatives. RPM products are trusted by professional racers and serious enthusiasts worldwide specifically because of their durability, performance consistency and customer support.

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 Front or Rear A-Arms for Traxxas Slash 4x4 Green 1pr RPM80704 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.