Overview
The ARRMA Hingepin 2.5x37mm (4) Z-ARA320750 is an essential spare part for RC enthusiasts who own ARRMA small-scale RC vehicles. These precision-engineered hinge pins are critical suspension components that connect your vehicle's A-arms to the chassis, allowing smooth up-and-down articulation of the suspension geometry. Whether you're a serious RC basher, weekend warrior, or someone just discovering the world of RC cars and trucks in the UK, having quality replacement hinge pins on hand is vital to maintaining peak performance and ensuring your RC vehicle remains in top condition for every outing.
Hinge pins are one of the first components to wear out during regular RC car use, especially if you're running your vehicle hard across rough terrain or in competitive racing environments. The constant articulation of the suspension system places significant stress on these small but critical components. By choosing genuine ARRMA replacement parts, you're ensuring that your vehicle receives components manufactured to the exact same exacting standards as the original equipment supplied with your RC kit. This is particularly important for owners of ARRMA's popular GROM range of small-scale vehicles, which includes the GORGON GROM, GRANITE GROM, MOJAVE GROM, QUAKE GROM, and TYPHON GROM models.
RC Model Shop is proud to stock genuine ARRMA hinge pins and other suspension spares to keep your RC vehicle running smoothly. Whether you're maintaining your brushless RC monster truck, preparing for your next racing event, or simply keeping spare parts on hand for regular maintenance, this four-pack of hinge pins offers excellent value and reliability.
Key Features
- Strong steel construction — These hinge pins are manufactured from hardened steel that provides exceptional durability and longevity, resisting bending, warping, and wear even under the demanding conditions of aggressive RC driving and frequent suspension articulation.
- Precision engineered — Each hinge pin is manufactured to exacting tolerances, ensuring perfect fit and function within your ARRMA vehicle's suspension system and enabling smooth, responsive handling without binding or play.
- Pack of four — This pack includes four individual 2.5mm diameter x 37mm length hinge pins, providing complete replacement sets for front and rear suspension systems or allowing you to maintain spares for future maintenance intervals.
- Direct replacement fitment — These pins are genuine ARRMA components designed to match exactly with suspension systems on multiple GROM-scale models, guaranteeing compatibility without modification or adjustment required.
- Fast and easy servicing — The straightforward design and precision manufacture mean that replacing worn hinge pins is a quick maintenance task that can be completed without specialist tools or technical knowledge, keeping your vehicle race-ready.
- Genuine ARRMA parts — Purchasing authentic manufacturer parts ensures you receive components built to the same quality standards as original equipment, maintaining your vehicle's performance and resale value.
Technical Performance
Hinge pins are fundamental suspension components in RC vehicles, serving as the pivot points that allow the A-arms to move vertically while maintaining proper suspension geometry. The 2.5mm diameter specification indicates these pins are designed for small-scale RC vehicles in the 1/16 to 1/14 scale range, which includes the entire ARRMA GROM family. At 37mm in length, these pins provide sufficient engagement with the suspension components to maintain structural integrity whilst allowing full suspension travel without binding. The steel construction offers superior strength compared to alternative materials, ensuring that even under aggressive driving conditions—whether bashing through sand dunes, pounding across rocky terrain, or executing high-speed manoeuvres on tarmac—the hinge pins maintain their dimensional accuracy and performance characteristics. Precision manufacturing means that each pin is finished to consistent tolerances, eliminating the play or looseness that can develop with worn or lower-quality alternatives. This directly translates to improved handling feel, more predictable suspension response, and faster lap times for those using RC vehicles in competitive racing environments across the UK and beyond.
What's in the Box
- 4 x 2.5mm diameter x 37mm length steel hinge pins
Frequently Asked Questions
- Which ARRMA RC vehicles use these 2.5x37mm hinge pins? — These hinge pins are compatible with multiple ARRMA small-scale models including the 1/16 GORGON GROM 4x4 (in Red, Yellow and Bronze variants), 1/18 GRANITE GROM MEGA 380 Brushed 4x4 (in Red, Blue/Red and Green), 1/16 MOJAVE GROM 223S BLX 4x4 (in White, Teal and Black), MOJAVE GROM MEGA 380 (in Red and Blue), 1/16 MOJAVE GROM race kit variants, 1/16 QUAKE GROM 4x4 (in Green, Red and Purple), 1/14 TYPHON GROM 223S BLX 4x4 (in Blue and Red), and 1/14 TYPHON GROM MEGA 380 Brushed 4x4 buggy models.
- How often should I replace my hinge pins? — Hinge pins should be inspected regularly during routine maintenance. Replace them when you notice play in the suspension, reduced responsiveness in handling, visible wear or bending, or if you're performing preventative maintenance before a big race or event. Regular bashers might replace them every 10-15 hours of use, while racing competitors may need more frequent replacement depending on driving intensity.
- Why should I choose genuine ARRMA hinge pins instead of aftermarket alternatives? — Genuine ARRMA parts are engineered to exact specifications matching your vehicle's suspension system, guaranteeing perfect fit and performance. Genuine parts maintain your vehicle's handling characteristics and durability, whereas lower-quality aftermarket options may introduce play, fit loosely, bend more easily, or wear faster, ultimately costing more in replacement cycles and potentially affecting your driving experience.
- Are these suitable for both brushless and brushed RC vehicles? — Yes, hinge pins are mechanical suspension components independent of the vehicle's motor type, making them compatible with both brushless and brushed ARRMA GROM models. The suspension geometry and performance characteristics remain the same regardless of whether your vehicle is equipped with a brushless or brushed motor system.
- Can these hinge pins be used as preventative spare parts? — Absolutely. Many experienced RC enthusiasts keep spare hinge pins in their maintenance kit so they can quickly perform repairs at the track or during service without delaying their driving session. Having spares on hand means you're always prepared for unexpected wear or damage during your RC adventures.
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 Hingepin 2.5x37mm (4) Z-ARA320750 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.
