Fastrax Arrma Grom Granite Aluminium Rear Upper Arms Pair FTAR052B

Overview

The Fastrax Arrma Grom/Granite Aluminium Rear Upper Arms (PR) FTAR052B represent a premium upgrade option for owners of Arrma Grom and Granite RC models. These precision-engineered aluminium components are designed to replace the stock rear upper arms, offering enhanced durability and performance characteristics that serious RC enthusiasts and weekend bashers alike will appreciate. Whether you're an experienced RC car UK hobbyist looking to upgrade your setup or a dedicated basher seeking more robust suspension geometry, these rear upper arms deliver the quality engineering you'd expect from Fastrax, a recognised name in RC performance parts.

Manufactured from high-grade aluminium, these rear upper arms provide a significant strength-to-weight advantage over plastic alternatives, making them an ideal choice for owners who demand reliability during aggressive driving sessions or competitive racing. The pair comes ready to install on your Arrma Grom or Granite, and they represent the kind of essential upgrade that transforms how your RC model handles under stress. For anyone serious about maintaining or upgrading their RC buggy or crawler, investing in quality suspension components like these Fastrax arms ensures your vehicle remains competitive and responsive on any terrain.

RC Model Shop stocks this component as part of our comprehensive range of Arrma spare parts and upgrades. Whether you're refreshing a worn suspension or building a custom setup, these aluminium rear upper arms are a trusted choice amongst the UK RC community. The quality construction and proven performance make them an excellent addition to any Arrma Grom or Granite build.

Key Features

• Aluminium construction — These rear upper arms are manufactured from premium aluminium material, which provides exceptional strength whilst keeping weight to a minimum, resulting in improved handling characteristics and reduced stress on your drivetrain compared to plastic alternatives.
• Direct fit compatibility — Designed specifically for Arrma Grom and Granite models, these arms guarantee perfect fitment without requiring modifications or adapters, making installation straightforward for builders of all skill levels.
• Pair supplied — The PR designation indicates you receive a complete pair of rear upper arms, so you have everything needed to upgrade both sides of your vehicle's rear suspension in one purchase.
• Enhanced durability — The aluminium composition resists flexing and deformation under load, which means your suspension geometry remains consistent and your handling stays predictable even during intense driving sessions or competitive racing events.
• Performance upgrade — Moving from stock plastic arms to these aluminium units represents a tangible performance upgrade that many Arrma enthusiasts consider essential, particularly for drivers who participate in RC racing or challenging off-road driving.
• Precision engineering — Fastrax components are engineered to exacting standards, ensuring that every arm meets strict quality control specifications and integrates perfectly with your vehicle's suspension system.

Technical Performance

These Fastrax aluminium rear upper arms represent a significant engineering upgrade from standard plastic suspension components. The use of premium aluminium alloy provides superior stiffness and durability, which directly translates to more consistent suspension geometry under load and improved overall vehicle handling characteristics. For drivers operating their Arrma Grom or Granite in demanding conditions—whether that's high-speed bashing, competitive racing, or challenging terrain exploration—the reduced flex and enhanced strength of aluminium arms create a more predictable and responsive driving experience. The material choice also means these components will withstand repeated impacts and stress cycles far better than plastic alternatives, extending the service life of your suspension system and reducing the frequency of component replacement. Installation is straightforward for anyone with basic RC maintenance knowledge, and the direct fit design means no cutting, drilling, or adapting is required. These rear upper arms work in conjunction with your vehicle's existing suspension system to maintain proper camber and toe angles, which is crucial for maintaining optimal tyre contact and grip across all driving surfaces. The pair ensures balanced suspension behaviour across both sides of your vehicle.

What's in the Box

• Fastrax Arrma Grom/Granite Aluminium Rear Upper Arms (pair)

Frequently Asked Questions

• Will these aluminium rear upper arms fit my Arrma Grom and Granite? — Yes, these Fastrax arms are engineered specifically for Arrma Grom and Granite models and provide a perfect direct fit without requiring any modifications. Simply remove your existing plastic arms and install these in their place following your vehicle's manual.
• What is the advantage of upgrading to aluminium rear upper arms? — Aluminium arms offer superior strength and stiffness compared to standard plastic components, which means your suspension maintains its intended geometry better under stress. This results in more consistent handling, improved predictability during driving, and significantly enhanced durability during aggressive use or competitive racing.
• Are these suitable for beginners? — Whilst these components are designed to be installed by anyone with basic RC maintenance skills, they represent an upgrade component rather than a beginner starter item. Beginners would benefit from these once they've familiarised themselves with basic RC maintenance, and upgrading to aluminium suspension parts is a common and recommended next step in developing a high-performance RC setup.
• What tools do I need to install these rear upper arms? — Installation requires standard hex wrenches or Allen keys that match the fastener sizes on your Arrma Grom or Granite. Consult your vehicle's manual for specific tool sizes and installation torque specifications to ensure proper assembly.
• How do I know if my rear upper arms need replacing? — Signs that your upper arms require attention include visible cracks or excessive flexing in plastic arms, inconsistent handling behaviour, or misaligned suspension geometry. These Fastrax aluminium replacements will restore performance and provide significantly improved durability for future use.
• Are these arms pre-drilled and ready to install? — Yes, these rear upper arms come fully finished with pre-drilled holes that align with your Arrma Grom or Granite's suspension mounting points, meaning you can install them directly without any additional preparation or drilling.

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 FASTRAX ARRMA GROM/GRANITE ALUMINIUM REAR UPPER ARMS (PR) FTAR052B 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.