- Product type: PowerStroke Front/Rear Shock Shafts
- Manufacturer: Pro-Line Racing
- Model number: G-PRO642251
- Alternative model number: PRO642200
- Shock shaft diameter: 3mm
- Shock design: Oil-filled emulsion-style with bleeder screw
- Shock body material: Precision-machined aluminium
- Compatible vehicles: ARRMA GROM Big Bore Aluminium Shocks
- Compatible ARRMA models: GRANITE GROM (1/18 scale), MOJAVE GROM (1/16 scale), TYPHON GROM (1/14 scale)
- Compatible GRANITE GROM variants: GRANITE GROM MEGA 380 Brushed 4x4 Monster Truck RTR (all colours)
- Compatible MOJAVE GROM variants: MOJAVE GROM MEGA 380 Brushed 4x4 Small Scale Desert Truck RTR, MOJAVE GROM 223S BLX 4x4 DT (with and without battery/charger)
- Compatible TYPHON GROM variants: TYPHON GROM MEGA 380 Brushed 4x4 Buggy RTR, TYPHON GROM 223S BLX 4x4
- Features: Thicker shock shaft for increased strength and durability
- Features: Integrated bleeder screw for precise rebound tuning
- Features: Precision-machined aluminium with laser-etched Pro-Line logo
- Fully serviceable design with available replacement parts and rebuild kits
- Quantity in box: Set of Front/Rear Shock Shafts
Overview
The PRO PowerStroke Front/Rear Shock Shafts (G-PRO642251) are essential replacement components for the Pro-Line PowerStroke Oil-Filled Shocks, the ultimate suspension upgrade for your ARRMA GROM mini RC car. Whether you're running a 1/18 GRANITE GROM, 1/16 MOJAVE GROM, or 1/14 TYPHON GROM, these shock shafts deliver the precision engineering and durability you need to keep your RC car UK-ready for every session. Pro-Line has engineered these shafts to be significantly thicker and stronger than stock, giving you the confidence to push harder across demanding terrain whilst maintaining the premium performance you expect from a ready to run RC upgrade.
If you already own Pro-Line PowerStroke shocks or are planning to invest in them, having replacement shock shafts on hand is essential for maintaining peak performance and ensuring your suspension stays reliable run after run. These are genuine Pro-Line components designed with precision and built to the highest standards. Whether you're a weekend basher tackling rough terrain or a serious hobbyist looking to fine-tune every aspect of your GROM's setup, these shock shafts are a critical part of your RC maintenance kit.
Designed to be fully serviceable and supported by Pro-Line's range of replacement parts and rebuild kits, the PowerStroke shock system represents a complete, tuneable suspension solution that transforms your GROM's handling characteristics. These replacement shafts ensure your investment in PowerStroke shocks stays performing at its absolute best, delivering consistent damping, improved handling, and the durability needed for long-term enjoyment of your RC experience.
Key Features
- 3mm Shock Shaft Design — The PowerStroke shocks feature a significantly thicker 3mm shock shaft compared to the stock 2.5mm design, providing substantially increased strength and durability that gives you confidence when pushing your GROM harder across demanding terrain and aggressive off-road sessions.
- Emulsion-Style Engineering with Bleeder Screw — The oil-filled emulsion design incorporates an integrated bleeder screw that allows you to set precise rebound characteristics, ensuring consistent suspension performance and improved handling across a wide range of driving conditions, from high-speed pavement runs to technical off-road courses.
- Precision-Machined Aluminium Construction — These shock shafts are crafted from precision-machined aluminium with laser-etched Pro-Line branding, delivering smooth operation and premium long-term durability worthy of a high-performance RC upgrade that will last through countless runs.
- Full Serviceability and Support — The PowerStroke shock system is designed to be fully serviceable with dedicated replacement shafts, springs, seals, and complete rebuild kits available, ensuring your investment stays performing at its best and can be maintained indefinitely with genuine Pro-Line components.
- Compatible with Multiple GROM Models — These replacement shafts work seamlessly with the ARRMA GRANITE GROM, MOJAVE GROM, and TYPHON GROM across all variants, making them an essential spares part if you own any of these popular mini RC vehicles.
Technical Performance
The PRO PowerStroke Front/Rear Shock Shafts represent Pro-Line's commitment to precision engineering and durability in RC suspension components. Built from high-quality aluminium with precision machining and laser-etched detailing, these shafts work in conjunction with the PowerStroke Oil-Filled Shocks to deliver a complete suspension system that outperforms stock components in every measurable way. The 3mm shaft diameter provides significantly more rigidity and strength compared to factory 2.5mm designs, reducing shaft flex under load and maintaining consistent performance even during aggressive bashing sessions. The emulsion-style shock design with bleeder screw technology allows for precise tuning of rebound characteristics, meaning you can adjust how quickly the suspension returns to its neutral position—critical for dialling in perfect handling across varying terrain types. These shocks are engineered to work with soft and hard springs (included with the complete shock set), threaded composite ride-height adjusters, and variable oil viscosity tuning, giving drivers three critical adjustment points to optimise their GROM's suspension setup for speed runs, bashing, or competition-level off-road performance. The precision-machined aluminium shock bodies and caps ensure smooth operation over hundreds of runs, whilst the fully serviceable design means you can maintain these components indefinitely with readily available replacement parts, rebuild kits, and accessory springs from Pro-Line's extensive aftermarket catalogue.
What's in the Box
- Set of PowerStroke Front/Rear Shock Shafts
Frequently Asked Questions
- Are these shock shafts a direct replacement for stock GROM shocks? — Yes, these PRO PowerStroke shock shafts are designed as direct replacement components for the Pro-Line PowerStroke Oil-Filled Shocks, which are compatible with ARRMA GROM Big Bore Aluminium Shocks. They feature a thicker 3mm shaft design compared to the stock 2.5mm specification, providing increased strength and durability.
- Do I need to purchase the complete shock set or just the shafts? — This product contains replacement shafts only, which are essential spares if you already own PowerStroke shocks or are rebuilding them. If you don't yet own the complete PowerStroke shock system, you'll need to purchase the full four-shock kit (G-PRO642200) which includes the shocks, shafts, soft and hard springs, and mounting hardware.
- What GROM models are these shafts compatible with? — These shock shafts are compatible with the ARRMA GRANITE GROM (1/18 scale), MOJAVE GROM (1/16 scale), and TYPHON GROM (1/14 scale) across all variants including MEGA 380 brushed models and 223S brushless models.
- Can I service these shafts myself? — Yes, the PowerStroke shock system is fully designed to be serviced and maintained. These shafts are part of a serviceable suspension system supported by replacement springs, seals, and complete rebuild kits from Pro-Line, meaning you can maintain your shocks indefinitely with genuine components.
- Why would I need replacement shock shafts? — Shock shafts can become bent, scored, or worn through intensive use, particularly in racing or aggressive bashing environments. Having replacement shafts on hand ensures you can quickly get back on the track or trail without lengthy downtime, making them an essential spares component for serious RC hobbyists.
- How do these shafts improve performance over stock components? — The 3mm shaft diameter is significantly thicker than the stock 2.5mm design, providing substantially greater strength and reducing flex under load. Combined with the emulsion-style oil-filled design and integrated bleeder screw, you get consistent damping characteristics, improved suspension feel, and better overall handling across varied terrain.
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 PRO PowerStroke Front/Rear Shock Shafts: PRO642200 G-PRO642251 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.
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
