RPM82354

Overview

The RPM Traxxas X-Maxx Upper & Lower A-Arm suspension components in green are purpose-engineered upgrades designed specifically for the legendary Traxxas X-Maxx massive RC monster truck. Immediately after Traxxas released the X-Maxx, RPM customers from across the UK and beyond started notifying the manufacturer that they needed stronger A-arms capable of handling the extreme weight and punishment that these giant 1/5 scale trucks can deliver. If you own an X-Maxx and are pushing your RC model truck to its limits, these replacement suspension arms are an essential upgrade that will transform your vehicle's durability and reliability.

RPM engineers reviewed numerous photographs of damage to stock Traxxas A-arms to identify the weak points, then meticulously designed a complete solution to improve both strength and durability without adding unnecessary weight. The result is a pair of suspension arms that represent the strongest and lightest A-arms available on the market for this platform. Whether you're a serious RC car enthusiast in the UK bashing at weekends or a competitive driver pushing your X-Maxx to extreme performance levels, these green A-arm replacements will give you the confidence to drive harder and jump higher without fear of suspension failure.

These suspension components are moulded from RPM's trademark blend of incredibly tough, engineering-grade nylon and manufactured in the USA to the highest standards. Backed by RPM's industry-leading limited lifetime warranty against breakage, you can enjoy worry-free performance knowing your investment is protected. For anyone serious about maintaining or upgrading their brushless 4WD RC monster truck, this is a must-have spare part that will extend your truck's lifespan and enhance your driving experience.

Key Features

• Superior Strength Design — The upper A-arm utilises proven A-arm designs from past successful RPM builds to create an upper support structure engineered to handle whatever punishment you throw at it, making it significantly stronger than the stock Traxxas arms.
• Enhanced Ground Clearance — The lower A-arm features improved ground clearance compared to stock Traxxas A-arms, allowing you to navigate obstacles and terrain with greater confidence and reduced risk of impact damage.
• Cross-Section Based on 1:5 Scale HPI Baja Design — The lower arm cross-section is engineered using proven geometry from HPI Baja A-arms, a platform renowned for durability and performance in extreme RC off-road applications.
• Double Support Beam Technology — A distinctive double support beam on the lower arms spreads impact energy over a much larger area, meaning hard hits and aggressive landings won't send you home carrying your truck in the "walk of shame".
• Universal Fit Design — These arms are engineered as universal fit components, meaning they'll fit on any corner of your X-Maxx truck without confusion about left, right, upper or lower positioning.
• Lighter Than Stock — Despite their superior strength, these replacement A-arms are lighter than the original Traxxas components, improving your truck's overall weight distribution and handling characteristics.
• Engineering Grade Nylon Construction — Moulded in RPM's trademark blend of incredibly tough, engineering-grade nylon materials that resist cracking, flexing and long-term degradation even under extreme driving conditions.
• Made in the USA — Manufactured to exacting standards in the United States, ensuring consistent quality and reliability that UK RC enthusiasts have come to expect from premium aftermarket components.
• Industry-Leading Warranty — Backed by RPM's limited lifetime warranty against breakage, providing peace of mind and demonstrating the manufacturer's confidence in these suspension arms.
• Direct Stock Replacement — These arms directly replace the stock Traxxas upper arm (part number 7729) and lower arms (part numbers 7730 and 7731), making installation straightforward and compatible with all X-Maxx variants.

Technical Performance

The RPM Traxxas X-Maxx Upper & Lower A-Arm suspension upgrade represents a significant engineering advancement in aftermarket RC monster truck components. Built from engineering-grade nylon that has been specifically formulated to deliver maximum impact resistance, these arms are designed to flex without fracturing when your X-Maxx lands hard from jumps or crashes through obstacles at high speed. The upper arm geometry draws from RPM's extensive experience with high-performance RC vehicles, ensuring that steering response remains crisp and predictable even during aggressive cornering and rapid direction changes. The lower arm's cross-section is directly inspired by proven 1:5 scale HPI Baja A-arm designs, which have demonstrated exceptional durability in the most demanding off-road RC racing environments. The innovative double support beam structure on the lower arms is a game-changer for high-impact driving, as it distributes crash forces across multiple contact points rather than concentrating stress in a single area where failure typically initiates. This engineering approach has been proven through thousands of user reports and real-world testing. Ground clearance improvements mean you can approach obstacles and technical terrain at steeper angles without the arms catching on rocks or stumps. The universal fit design eliminates fitment confusion and allows you to swap arms between different corners if damage occurs, maximising your spare parts flexibility. For users who engage in heavy bashing, massive jumps or extreme power driving, RPM recommends upgrading the lower A-arm hinge pins to CEN GS025 threaded hinge pins for additional durability, though this is optional for standard use.

What's in the Box

• 1 x Upper A-arm (green)
• 1 x Lower A-arm (green)

What You Need to Complete

• 4 x RPM82354 packages required for a complete full vehicle (one package covers one corner of the truck)
• CEN GS025 threaded hinge pins (recommended for heavy use, big jumps or extreme power applications - optional upgrade)

Frequently Asked Questions

• How many packages of RPM82354 do I need to fully upgrade my X-Maxx? — You will require four complete packages of the RPM82354 A-arms to upgrade all four corners of your X-Maxx monster truck. Each package contains one upper arm and one lower arm, providing the components necessary for a single corner of the vehicle.
• What Traxxas stock parts do these RPM A-arms replace? — The RPM upper A-arm directly replaces the stock Traxxas part number 7729. The RPM lower A-arm replaces both Traxxas stock part numbers 7730 and 7731, making it a universal replacement for any X-Maxx variant.
• Are these green A-arms compatible with all X-Maxx models? — Yes, these RPM A-arms are compatible with the Traxxas X-Maxx Belted 4WD Brushless RTR 8S Monster Truck in all colours (Red, Green, Orange and Blue), as well as the Traxxas X-Maxx Ultimate models in Green X and Blue X variants. They are also compatible with the Traxxas X-Monster Chassis.
• Will these arms improve my truck's durability? — Absolutely. RPM designed these A-arms specifically because customers reported damage to stock arms under the weight and punishment of X-Maxx driving. These replacement arms are engineered to be stronger than stock while remaining lighter, meaning you'll experience fewer breakages and longer periods between repairs when bashing your RC truck.
• Can I use these A-arms on just one corner or do I need to upgrade all four? — While you can replace individual arms if they become damaged, for optimal handling, suspension geometry and durability it is recommended to upgrade all four corners of your truck. The harmonious design across all four suspension points ensures your X-Maxx performs at its best.
• Are these arms suitable for beginners? — These are replacement suspension components designed for people who already own a Traxxas X-Maxx truck. If you are new to RC and considering purchasing an X-Maxx, these would be an excellent upgrade to add from the start. If you already have an X-Maxx and are experiencing A-arm breakages, these are a must-have upgrade regardless of your experience level.
• What material are these arms made from? — These arms are moulded from RPM's trademark blend of incredibly tough, engineering-grade nylon. This material is specifically formulated to resist cracking and impact damage whilst remaining light enough not to significantly add weight to your suspension.
• Do these arms fit on any corner of the truck? — Yes, the universal fit design means these arms are designed to work on any corner of your X-Maxx. You do not need to worry about left-side versus right-side fitment or upper versus lower positioning - they're engineered as universal components.
• Are there any additional parts I need when upgrading to these A-arms? — For most standard users, these A-arms are all you need to replace damaged stock components. However, if you regularly engage in heavy bashing, perform massive jumps or run your truck with extreme power levels, RPM recommends upgrading to CEN GS025 threaded hinge pins for additional durability and longevity.
• What warranty coverage comes with these A-arms? — RPM backs these A-arms with an industry-leading limited lifetime warranty against breakage. This demonstrates the manufacturer's confidence in the product quality and provides you with peace of mind knowing your investment is protected against defects.

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 TRAXXAS X-MAXX UPPER & LOWER A-ARM GREEN RPM82354 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.