RPM ARRMA 6S Front Right A-arms Red Upper Lower Suspension RPM81609

Overview

The RPM ARRMA Upper/Lower Right Front Arms in striking red are premium suspension components engineered to transform the handling and durability of your ARRMA 6S monster truck or stunt truck. Whether you own a Kraton, Outcast, Notorious, Talion or Fireteam, these reinforced A-arms represent a significant upgrade from standard equipment. Designed specifically for V5 and EXB editions, these arms are built from engineering-grade nylon that can withstand the most demanding bashers and competitive racing environments. If you're running an RC car in the UK and want genuine performance improvements without the hassle of fitting incompatible parts, these RPM arms deliver exactly what you need.

RPM suspension components are recognised across the RC hobby community as the gold standard for durability and performance. These A-arms aren't just thicker and stronger—they're engineered with intelligent design modifications that address the exact specifications of modern ARRMA vehicles. With reinforced construction throughout, a redesigned upper arm geometry and additional suspension mounting options, these parts will elevate your brushless RC truck's cornering ability, stability and longevity. This is the kind of upgrade that serious RC enthusiasts invest in when they're ready to move beyond basic maintenance.

Each package contains one upper arm and one lower arm for the right front side of your vehicle. You'll need both the left and right package sets to complete a full front suspension upgrade. These are genuine replacement arms for ARRMA components ARA330655 (upper) and ARA330656 (lower), making installation straightforward and ensuring perfect fitment every time.

Key Features

• 30% Thicker Lower A-arm Support Beams — The lower A-arms feature support beams that are 30 per cent thicker than the original 6S version, delivering substantially increased rigidity and impact resistance, which means your suspension will last considerably longer under aggressive bashings and high-speed runs.
• 22% Thicker Upper A-arms — Upper A-arms are more than 22 per cent thicker than the previous generation, improving both strength and reducing unwanted flex that can compromise suspension geometry and handling precision during fast cornering.
• Reduced Suspension Flex — The increased thickness throughout both upper and lower arms minimises flex under load, translating directly into more predictable suspension performance and handling characteristics that remain consistent lap after lap.
• Extra Shock Mount Position — An additional shock mount hole positioned further outboard on the lower A-arm enables a lower profile suspension set-up, allowing your shocks to lay down flatter and drop the overall ride height for improved centre of gravity and higher corner speeds.
• Caster Clip Elimination — By removing the caster spacers from the upper A-arm design, RPM widened the inner hinge pin mount area to create a more pronounced 'A' shape that dramatically improves steering response and suspension performance whilst adding genuine strength and durability.
• Engineering-Grade Nylon Construction — These A-arms are moulded from RPM's nearly indestructible blend of engineering-grade nylons, materials specifically chosen to maintain performance even in the harshest conditions and most demanding racing environments.
• V5 and EXB Compatibility — Engineered specifically for V5 and EXB editions of ARRMA vehicles, accommodating all design modifications made by ARRMA for these latest generations, with reverse compatibility for older models when specified accessories are added.
• Direct Stock Replacement — These arms directly replace ARRMA components ARA330655 (upper) and ARA330656 (lower), ensuring perfect fitment without modification and maintaining exact suspension geometry specifications.

Technical Performance

These RPM A-arms represent genuine engineering advancement in RC suspension design. The 30 per cent thickness increase in lower support beams and the 22 per cent thickness increase in upper arms create a suspension platform that's significantly more resistant to bending and deformation under the extreme loads generated by 6S brushless powertrains. The materials used—engineering-grade nylons—are specifically selected for their superior impact resistance and flex characteristics compared to standard plastics. When you're running a high-power brushless motor generating serious torque and acceleration, suspension flex becomes a critical performance limiter. These thicker, more rigid A-arms maintain their geometry through fast cornering, jumps and hard landings, which means your suspension geometry stays true and your handling remains predictable. The additional shock mount hole on the lower arm opens up genuine tuning possibilities; lowering the ride height by repositioning your shocks creates a lower centre of gravity that directly translates to higher achievable corner speeds and improved stability through technical sections. The caster clip elimination on the upper arm, where RPM widened the hinge pin mount to create a stronger 'A' shape, simultaneously improves steering response—sharper turn-in without sacrificing mid-corner stability—whilst adding measurable strength to what is typically a stress concentration point. Built for 1/8 scale 6S vehicles like the ARRMA Kraton, Outcast, Notorious, Talion and Fireteam, these arms are engineered to handle the punishment delivered by brushless systems whilst maintaining the precision handling that competitive bashers and racers demand.

What's in the Box

• One upper right front A-arm in red
• One lower right front A-arm in red

What You Need to Complete

• Right front matching set for complete front suspension upgrade (this is a single right side package)
• Left front A-arms (RPM81579) to upgrade the opposite side of your vehicle
• For V4 and earlier ARRMA models: one ARRMA ARA713032 Shock Mount Pin and one ARRMA ARA330645 End Cap to ensure compatibility

Frequently Asked Questions

• Which ARRMA models are these front arms compatible with? — These RPM A-arms fit the V5 and EXB editions of the ARRMA Kraton, Notorious, Talion, Fireteam and Outcast. The design modifications have been specifically engineered to accommodate changes ARRMA made for these latest generations. They also feature reverse compatibility with older models, though V4 and earlier versions require additional ARRMA components (ARA713032 Shock Mount Pin and ARA330645 End Cap) for proper fitment.
• What is the difference between these and standard ARRMA factory arms? — RPM's 6S A-arms are substantially beefier than original equipment, with lower A-arm support beams that are 30 per cent thicker and upper A-arms that are more than 22 per cent thicker. This increased thickness reduces flex, improves durability and delivers more predictable suspension performance. Additionally, RPM added an extra shock mount hole on the lower arm for suspension tuning options and eliminated caster clips on the upper arm whilst widening the hinge pin mount to create a more stable 'A' shape that improves both steering and suspension handling.
• How much do these arms weigh? — Weight specifications were not provided by the manufacturer in the available documentation.
• Do I need both left and right packages? — Yes, for a complete front suspension upgrade you need both the right front arms (RPM81609) and the left front arms (RPM81579). Each package contains only the components for one side of the vehicle.
• What material are these A-arms made from? — RPM A-arms are moulded from an engineering-grade nylon blend chosen for nearly indestructible durability and superior impact resistance compared to standard plastics, performing reliably even in the harshest conditions.
• Will these improve my RC car's handling? — Yes. The reduced flex from thicker construction means more predictable suspension geometry and handling. The additional shock mount position enables suspension tuning for lower centre of gravity and higher corner speeds. The improved upper arm design with widened hinge pin mounts enhances steering response and stability. Collectively, these features deliver measurable improvements in handling precision and cornering performance.
• What do I replace these arms for? — These RPM arms directly replace ARRMA components ARA330655 (upper arms) and ARA330656 (lower arms), making installation straightforward and ensuring perfect fitment without modification.
• Are these suitable for high-speed bashing? — These arms are engineered specifically for demanding applications including both aggressive bashing and competitive racing. The 30 per cent thicker lower beams and 22 per cent thicker upper arms are designed to withstand the forces generated by modern 6S brushless powertrains, making them ideal for serious RC enthusiasts in the UK who run fast, powerful setups.

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 ARRMA Upper/Lower Right Front Arms Red 6S 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.