RPM Front Or Rear A-Arms For Traxxas Slash 4x4 Rustler 4x4 Black RPM80702

Overview

RPM Front Or Rear A-Arms For Traxxas Slash 4x4, Rustler 4x4, Stampede 4x4 and Rally 4x4 represent the pinnacle of aftermarket suspension upgrades for 1/10 scale RC short course trucks. Whether you're a competitive racer demanding precision handling or a weekend basher pushing your RC car UK to its limits, these engineering-grade nylon A-arms deliver the performance and durability you need. RPM has engineered these arms to strike the perfect balance between rigidity and impact resistance, ensuring that your truck handles like a precision instrument while remaining tough enough to survive the hardest crashes.

These A-arms are designed as direct bolt-on replacements for stock Traxxas units, making them an ideal upgrade for anyone looking to improve their Slash 4x4 or Rustler 4x4 without requiring extensive modification or additional hardware. RPM's reputation for quality is well-earned across the RC hobby, and these suspension arms showcase exactly why experienced RC enthusiasts trust the brand. From casual bashers to serious competitors, users consistently report that these arms simply do not break under extreme conditions, surviving 30-foot jumps, tree impacts, and relentless track abuse that would destroy stock components.

Available in eye-catching black, these A-arms combine functional performance with aesthetic appeal, featuring RPM's distinctive 30-degree leading and trailing edges and substantial bosses for shock and sway bar mounts. They're manufactured right here in the USA using RPM's proven blend of durable engineering-grade nylons, ensuring consistent quality and longevity that far exceeds stock specifications.

Key Features

• Reduced Suspension Slop — RPM has tightened tolerances around hinge pins and mounting areas to eliminate play in the suspension system, which directly translates to more consistent camber, caster, toe, and wheelbase settings that remain predictable run after run, giving you the confidence to push harder on track or in the rough.
• Minimised Fore and Aft Movement — By reducing fore and aft movement of the A-arms at both the inner hinge pin and axle carriers by better than 90% compared to stock components, these arms lock your suspension geometry in place, delivering sharper handling response and eliminating the mushy feel of worn stock arms.
• Weight Reduction — Each A-arm is 6.5 grams lighter than the stock Traxxas equivalent, totalling just under one ounce of weight saved per pair, which improves acceleration, braking response, and overall vehicle dynamics, a meaningful upgrade for any RC car enthusiast in the UK looking for performance gains.
• Exceptional Durability — Moulded from RPM's trademark blend of bulletproof engineering-grade nylons, these arms deliver outstanding strength and wear resistance that survives extreme bashing, competitive racing, and everything in between, with users reporting successful survival of 30-foot jumps and tree impacts.
• Direct Bolt-On Installation — These A-arms retain all stock suspension geometry and install using existing Traxxas hardware with no modifications needed, making this one of the easiest and most effective suspension upgrades available for the Slash 4x4 and Rustler 4x4.
• Precision Engineering — The arms are designed and manufactured in southern California using advanced moulding techniques, resulting in consistent quality, precise fitment, and performance that simply outperforms budget aftermarket alternatives.
• Enhanced Aesthetic Appeal — Black colour is moulded throughout the entire arm, meaning scratches and wear never expose a different colour underneath, keeping your truck looking fresh and professional through years of use.
• Industry-Leading Warranty — RPM backs every set with a lifetime warranty against breakage, demonstrating absolute confidence in product durability and offering you complete peace of mind with your investment.
• Huge Shock and Sway Bar Bosses — Substantial moulded bosses provide secure mounting points for shocks and anti-roll bars, ensuring components stay firmly in place during aggressive driving and supporting future suspension tuning upgrades.
• Sold in Pairs — Each package contains one left and one right A-arm, offering flexibility to upgrade front or rear independently, though two packages are needed to fully upgrade your complete truck.

Technical Performance

RPM's engineering approach to these A-arms represents the pinnacle of suspension component design for 1/10 scale short course trucks. The arms are moulded from engineering-grade nylon that delivers a unique combination of properties: sufficient rigidity to maintain precise handling geometry and consistent suspension alignment, yet enough flexibility to absorb impacts and prevent catastrophic breakage that would damage more fragile components like differentials, axle carriers, and shock towers. This balance is what separates genuine performance upgrades from merely stronger, more fragile alternatives. The tighter tolerances around hinge pin areas reduce the mechanical slop that plagues stock suspension systems, directly improving steering response and making your Slash 4x4 or Rustler 4x4 feel more locked-in and predictable whether you're chasing lap times or exploring the local park. The 6.5-gram weight saving per arm—totalling just under one ounce per pair—may seem modest, but in RC racing and bashing, every gram counts toward improved acceleration and deceleration. These arms are compatible with the 1/10 versions of Slash 4x4, Stampede 4x4, Rustler 4x4, and Rally 4x4 models, replacing stock Traxxas part numbers 3655R and 3655X. They do not fit the Fiesta ST Rally or Jato 4x4 VXL-4S. The distinctive 30-degree leading and trailing edges are not merely cosmetic; they provide structural benefits while reducing stress concentration points that can lead to cracking. These arms represent the result of years of real-world testing in both competitive racing and hardcore bashing environments.

What's in the Box

• 1 x RPM Front Or Rear A-Arm (left hand)
• 1 x RPM Front Or Rear A-Arm (right hand)

What You Need to Complete

• A second package of RPM80702 to complete both front and rear A-arm upgrades for your truck
• Stock Traxxas hardware (included with your truck or readily available)

Frequently Asked Questions

• Do I need to buy two packages to upgrade my entire Slash 4x4 or Rustler 4x4? — Yes, RPM sells these A-arms in individual pairs (one left, one right), and most users purchase two packages to upgrade both front and rear suspension. Each package replaces either the front or rear arms, so you'll need both to fully upgrade your truck's suspension.
• Will these A-arms fit my Traxxas truck without modification? — Yes, these are direct bolt-on replacements for stock Traxxas A-arms on 1/10 scale Slash 4x4, Stampede 4x4, Rustler 4x4, and Rally 4x4 models. They retain all stock suspension geometry and use existing Traxxas hardware, requiring no modifications or additional parts.
• What is the weight saving compared to stock arms? — Each RPM A-arm is 6.5 grams lighter than the stock Traxxas equivalent (weight comparison based on Traxxas #3655X), totalling just under one ounce of weight savings per pair, which improves acceleration and vehicle dynamics.
• Are these arms suitable for both racing and bashing? — Absolutely. RPM engineered these arms for dual-purpose performance, delivering the rigidity that racers demand for precise handling whilst providing the durability that bashers need to survive hard impacts and extreme terrain.
• What makes RPM A-arms more durable than stock Traxxas parts? — RPM uses engineering-grade nylon that combines strength with flexibility, allowing the arms to absorb impacts without breaking whilst maintaining structural rigidity for consistent handling. Additionally, tighter manufacturing tolerances eliminate suspension slop, and the arms are backed by a lifetime warranty against breakage.
• Do these arms work with anti-sway bars? — Yes, these A-arms feature large bosses designed for shock and sway bar mounting, providing secure attachment points for anti-roll bars and supporting future suspension tuning.
• Will these fit the Jato or other Traxxas models? — No, these arms are specifically designed for 1/10 scale Slash 4x4, Stampede 4x4, Rustler 4x4, and Rally 4x4. They do not fit the Jato, Fiesta ST Rally, or Jato 4x4 VXL-4S. Always verify compatibility with your specific model before purchasing.
• What is the warranty coverage? — RPM backs every set with an industry-leading lifetime warranty against breakage, demonstrating confidence in durability and providing you with complete peace of mind.
• Can I install these myself? — Yes, installation is straightforward as these are direct bolt-on replacements using stock Traxxas hardware. If you're comfortable working on your RC car UK, you can complete installation without specialist tools or expertise.

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/ Rustler 4x4 - Black (2) RPM80702 Upgrade for Traxxas 3655X and 3655R 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.