Overview
The ARRMA Machined Shock Piston, Tapered, 6x1.3mm Hole (2) Z-ARA330727 is a precision suspension component designed for serious RC enthusiasts who demand top-tier performance from their ARRMA RC vehicles. Whether you're running a brushless RC monster truck, buggy, or speed truck across the UK, this machined shock piston represents a critical upgrade to your vehicle's suspension system. Shock pistons play a vital role in controlling fluid flow within your RC car's shock absorbers, directly affecting how your vehicle handles cornering, acceleration, and impact absorption. For anyone looking to fine-tune their RC car's damping characteristics and achieve more responsive handling, this component is essential.
These machined shock pistons are engineered for models including the ARRMA BIG ROCK 6S, FELONY 6S, INFRACTION 6S, MOJAVE 6S, KRATON 6S, NOTORIOUS 6S, OUTCAST 6S, TALION 6S, TYPHON 6S, LIMITLESS 6S, LIMITLESS 120 8S and FIRETEAM 6S, making them compatible with a wide range of ARRMA's most popular ready-to-run RC trucks and buggies. The pack includes two pistons, allowing you to upgrade both shock units on your vehicle for consistent, balanced performance. Whether you're a competitive racer fine-tuning suspension geometry or a weekend basher seeking improved off-road performance, these tapered shock pistons offer the advanced tuning capability that separates good handling from excellent handling in RC cars.
This is a component upgrade that sits at the heart of serious suspension tuning, favoured by RC enthusiasts across the UK who understand that suspension performance is just as important as motor power when it comes to overall vehicle dynamics. The tapered design offers a sophisticated approach to managing compression and extension damping, allowing you to customise how your RC vehicle responds to different terrain and driving conditions.
Key Features
- Precision Machined Construction — Each piston is machined to exacting tolerances, ensuring an absolutely accurate fit within the shock body of your ARRMA RC vehicle, eliminating any play or inconsistency that could affect suspension performance and handling precision.
- High-Quality POM Material — The pistons are manufactured from premium POM (polyoxymethylene), a material chosen specifically for its low friction properties, exceptional stiffness, and outstanding dimensional stability, ensuring your suspension performs consistently lap after lap or bash after bash.
- Tapered Piston Design — The tapered shape is engineered to deliver different compression and extension damping characteristics, allowing you to fine-tune how your RC truck or buggy absorbs bumps, recovers from impacts, and maintains control through corners, providing a level of suspension customisation that can make the difference in competitive RC racing.
- Six Precision Holes at 1.3mm Diameter — Each piston features six precisely drilled 1.3mm holes that control damping fluid flow through the piston, with this specific hole configuration tuned for optimal performance in ARRMA's suspension systems and allowing you to adjust damping behaviour by changing shock oil viscosity.
- Pack of Two Pistons — The set includes two pistons, the exact quantity needed to upgrade both front and rear shocks on your RC vehicle, ensuring balanced and consistent suspension performance across your entire chassis.
Technical Performance
Shock pistons are critical suspension components that govern how effectively your RC car's suspension system manages impacts, maintains traction, and preserves handling precision during high-speed running. The ARRMA Machined Shock Piston achieves its performance through a combination of engineering excellence and material science. The POM material used in manufacture is widely recognised in precision engineering for delivering minimal friction losses, meaning the piston moves smoothly through the shock fluid without unnecessary resistance, translating to more responsive and predictable suspension action. The tapered geometry means the piston isn't uniform along its length; instead, it features a carefully engineered profile that changes the flow characteristics of damping fluid as the shock compresses and extends, effectively creating two different damping curves in a single component. This is significantly more sophisticated than simple cylindrical pistons and allows for fine-tuned handling characteristics that can adapt to different driving styles and terrain conditions. The six 1.3mm holes drilled through the piston body are the primary fluid passages, and their specific diameter and arrangement are critical to matching the original ARRMA suspension tune. The piston's dimensional stability means it will maintain its performance characteristics over thousands of impact cycles, essential for consistency in competitive racing or regular weekend RC bashers. For UK RC enthusiasts, these pistons represent a genuine performance upgrade path for models ranging from 1/7 scale large trucks like the BIG ROCK and MOJAVE through to 1/8 scale speed-focused vehicles like the KRATON and TALION, and even smaller buggies like the TYPHON series.
What's in the Box
- 2 x Machined Shock Piston (Tapered, 6x1.3mm Hole)
Frequently Asked Questions
- What ARRMA models are these shock pistons compatible with? — These tapered machined shock pistons are compatible with a comprehensive range of ARRMA vehicles, including the 1/7 scale BIG ROCK 6S, FELONY 6S AVC, FIRETEAM 6S, INFRACTION 6S models, MOJAVE 6S variants, LIMITLESS 6S and LIMITLESS 120 8S, and the 1/8 scale KRATON 6S models, NOTORIOUS 6S, OUTCAST 6S, TALION 6S EXB AVC, and TYPHON 6S variants. This makes them suitable for monster trucks, buggies, street bash vehicles, and speed trucks across ARRMA's current range.
- How do tapered shock pistons differ from standard pistons? — Unlike simple cylindrical pistons, tapered pistons feature a varying diameter along their length that creates different damping characteristics during compression and extension phases of suspension movement. This allows for more sophisticated suspension tuning and can help optimise your RC vehicle's handling across different terrain types and driving conditions.
- What material are these pistons made from? — These shock pistons are manufactured from POM (polyoxymethylene), a high-performance engineering plastic selected for its exceptionally low friction properties, high stiffness, and superior dimensional stability, ensuring consistent suspension performance over extended use.
- Why do I need two pistons in this set? — RC vehicles have shock absorbers at multiple positions (typically front and rear), and upgrading all shock pistons at the same time ensures balanced and consistent suspension performance across your entire vehicle, preventing handling inconsistencies that could result from mixed old and new components.
- What do the 1.3mm holes on the piston do? — The six 1.3mm diameter holes drilled through each piston control the flow of damping fluid through the shock absorber, effectively controlling how quickly the suspension compresses and extends. These specific holes are tuned for ARRMA's suspension systems and work in conjunction with shock fluid viscosity to deliver the correct damping rate.
- Can I tune my suspension by changing these pistons? — Yes, shock pistons are key tuning components. By changing the size or number of damping holes, or by switching to pistons with different tapered profiles, you can adjust your RC vehicle's damping characteristics. Additionally, changing shock fluid viscosity works in conjunction with these pistons to fine-tune suspension performance for different track conditions or driving preferences.
- Are these pistons suitable for competitive RC racing? — Absolutely. These precision-machined pistons are designed for serious RC enthusiasts and are used in competitive racing environments where suspension tuning is critical to lap time performance. Their precision manufacturing and tapered design make them ideal for racers who want to extract maximum performance from their ARRMA RC vehicles.
- What is the customer rating for these shock pistons? — These machined shock pistons carry a customer rating of 3.3 out of 5 stars, reflecting real-world user experiences with the product across the RC community.
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 ARRMA Machined Shock Piston, Tapered, 6x1.3mm Hole (2) Z-ARA330727 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.
