Fastrax 1/10 75mm Alloy Adjustable Shocks Pair FAST156

Overview

The Fastrax 1/10th 75mm Alloy Adjustable Shocks (Pair) FAST156 represent an exceptional upgrade for RC car enthusiasts across the UK looking to dramatically improve their vehicle's suspension performance and handling characteristics. Whether you're running a Tamiya Lunch Box, Midnight Pumpkin, or other compatible 1/10 scale RC crawler or touring car, these premium aluminium shock absorbers deliver the precision engineering and adjustability that serious hobbyists demand. As one of the most cost-effective suspension upgrades available for RC cars in the UK, these shocks punch well above their weight in terms of quality, durability and performance enhancement.

Designed with meticulous attention to detail, the Fastrax shock absorbers feature a completely aluminium construction throughout, making them significantly lighter and more rigid than plastic alternatives whilst maintaining excellent damping characteristics. The adjustable spring preload system allows you to fine-tune your vehicle's ride height and handling balance to suit different driving conditions, whether you're tackling off-road trails, crawling over challenging terrain, or enjoying casual backyard bashing. These are genuine performance shocks that transform how your RC car behaves on the track or trail, offering smooth, responsive suspension action that absorbs impacts whilst maintaining excellent control authority.

RC car suspension is one of the most critical factors affecting overall performance, and investing in quality shock absorbers like these Fastrax units represents one of the smartest upgrades any RC car owner can make. The pair comes complete with all necessary accessories including standoffs and foam compensators, meaning you have everything required to install these shocks on your compatible vehicle right out of the box. If you're serious about improving your RC car's handling and performance, the Fastrax 1/10th 75mm Alloy Adjustable Shocks deserve a place on your upgrade shopping list today.

Key Features

• Fully Aluminium Construction — Every component from the threaded body to the shock end is crafted from lightweight aluminium alloy, providing exceptional strength-to-weight ratio and superior rigidity compared to plastic shock bodies, resulting in more precise suspension response and longer component lifespan.
• Adjustable Spring Preload System — The alloy spring adjuster allows you to easily modify spring preload and ride height, enabling you to optimise your vehicle's suspension setup for different driving styles, track conditions and terrains without requiring any special tools beyond what you likely already own.
• Professional Alloy Spring Cup — The precision-machined aluminium spring cup ensures secure spring seating and even load distribution, maintaining consistent suspension performance across both front and rear axles whilst eliminating spring slippage or binding that can occur with lower-quality plastic components.
• Sealed Alloy Cap with Diaphragm — The alloy shock cap features an integrated diaphragm design that helps regulate internal pressure and prevent oil leakage from the shock shaft, maintaining consistent damping performance throughout extended driving sessions.
• Threaded Shock End Design — The alloy threaded shock ends provide secure mounting to your RC car's suspension arms with reliable thread engagement, allowing for precise positioning and adjustment of shock mounting points to fine-tune suspension geometry.
• Complete Accessory Pack — Included standoffs and foam compensators provide everything necessary for proper installation, ensuring you can get these shocks mounted and operational without hunting for additional components or parts.
• Silicone Oil Compatible — These shocks use industry-standard silicone shock oil for damping, allowing you to adjust damping characteristics by changing oil viscosity to suit your driving style and local conditions.

Technical Performance

The Fastrax 1/10th 75mm Alloy Adjustable Shocks represent serious engineering excellence in the RC suspension market. The 75mm length specification makes these shocks perfectly suited to 1/10 scale RC vehicles, providing the ideal travel range for both on-road and off-road applications. The all-aluminium construction throughout every component — body, spring adjuster, cap, spring cup and threaded ends — delivers exceptional durability and responsiveness compared to hybrid designs that mix materials. This rigidity translates directly into more precise handling feedback and faster suspension response to terrain changes, giving drivers better control authority over their vehicles. The adjustable spring preload mechanism operates smoothly and reliably, allowing infinitely variable ride height adjustment within the shock's travel range. These shocks require separate silicone shock oil (not included), which you'll need to purchase separately in your preferred viscosity to achieve the damping characteristics that match your driving style and conditions. The foam compensators included in the accessory pack help manage oil temperature changes and pressure variations, maintaining consistent suspension feel even during extended driving sessions. The threaded mounting design with proper thread-locking ensures secure installation that resists vibration-induced loosening, a critical consideration for reliability in RC vehicles subjected to constant impacts and vibration. Built to the exacting standards expected from the Fastrax brand, these shocks deliver the kind of build quality and performance that keeps dedicated RC enthusiasts coming back to this manufacturer for their suspension needs.

What's in the Box

• Pair of Fastrax 1/10th 75mm Alloy Adjustable Shocks
• Alloy threaded bodies with spring adjusters
• Alloy caps with diaphragm
• Alloy spring cups
• Alloy threaded shock ends
• Standoffs for secure mounting
• Foam compensators for pressure regulation

What You Need to Complete

• Silicone Shock Oil — Required for damping. You must purchase this separately in your preferred viscosity (typically 30wt/350 cSt for general use, though heavier or lighter oils are available for different conditions and driving styles)
• Compatible RC Vehicle — These shocks are designed for 1/10 scale vehicles including Tamiya Lunch Box, Tamiya Midnight Pumpkin, Tamiya X-SA (CW-01 chassis), and other compatible 1/10 scale RC cars and crawlers

Frequently Asked Questions

• Are these shocks suitable for beginners new to RC cars? — Yes, absolutely. While these represent a quality upgrade, they're not overly complex to install or adjust. The simple spring preload adjustment mechanism is intuitive to operate, making them perfect for newcomers to RC suspension tuning who want to learn how adjustable shocks function. Beginners should start with standard viscosity silicone oil and experiment gradually with adjustments.
• What's included and what do I need to buy separately? — The pair comes with standoffs and foam compensators, providing all mounting hardware you need. You must purchase silicone shock oil separately, as these shocks arrive empty. Common recommendations include Core RC Silicone Shock Oil in 350 cSt (30wt) viscosity, though you may prefer heavier or lighter options depending on your specific vehicle and conditions.
• Can I adjust these shocks after installation on my RC car? — Yes, one of the primary advantages of these shocks is the adjustable spring preload system. You can easily adjust spring stiffness and ride height by turning the adjuster rings, allowing you to fine-tune suspension feel without removing the shocks from your vehicle. This makes them excellent for experimenting with different setups.
• Which Tamiya vehicles are these compatible with? — These shocks are specifically compatible with Tamiya Lunch Box models (including the standard version and Black Edition), Tamiya Midnight Pumpkin Metallic Special, Tamiya Midnight Pumpkin Black Edition, and Tamiya X-SA Midnight Pumpkin Black Edition (CW-01 chassis). Always verify compatibility with your specific vehicle before purchasing.
• What if my shocks leak oil after installation? — Some owners have reported minor oil seepage down the shock shafts. This is typically resolved by upgrading to Tamiya red O-rings (available separately) and applying small amounts of thread-locking compound to the bottom eyelets on the shock shaft to prevent them loosening over time. The shocks themselves are of excellent build quality — proper assembly with correct O-rings and thread-locking prevents any issues.
• How difficult is installation on my RC car? — Installation is straightforward for anyone with basic RC mechanical skills. These shocks feature standard threaded mounting ends that attach to your vehicle's suspension arms using the included standoffs. Ensure proper thread-locking on mounting bolts, and fill with silicone oil before installation. Most users complete installation in 30 minutes per axle.
• Will upgrading to these shocks significantly improve my RC car's performance? — Yes, most RC enthusiasts report dramatic improvements in handling, control and ride quality when upgrading from basic stock shocks to quality adjustable alternatives like these. The combination of rigid aluminium construction, smooth damping and adjustable preload transforms how your vehicle responds to terrain changes, providing better traction, more predictable handling and improved overall driving experience.

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 1/10TH 75mm ALLOY ADJUSTABLE SHOCKS (PAIR) FAST156 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.