Fastrax 3-in-1 Turnbuckle Wrench 4mm 5mm 6mm for RC Cars FAST671

Overview

The Fastrax 3-in-1 Turnbuckle Wrench 4/5/6mm (FAST671) is an essential precision tool designed for RC enthusiasts and competitive racers who demand fast, accurate adjustments to their RC car suspension and steering systems. Whether you're tuning a 1/10 scale buggy, preparing a 1/8 scale truggy for race day, or performing routine maintenance on your RC vehicle, this versatile wrench eliminates the need to carry multiple single-size tools whilst maintaining professional-grade accuracy. The Fastrax FAST671 is the perfect addition to any RC tool kit, whether you're a seasoned racer or a dedicated hobbyist looking to streamline your pit bag and improve your setup efficiency.

Turnbuckles are fundamental components of any RC car's suspension and steering geometry, found on camber links, toe links, and steering rods across popular brands such as Traxxas, Tamiya, Xray, and many others. The ability to adjust these components quickly and accurately can make the difference between a smooth, consistent ride and a poorly handling chassis. With three of the most common turnbuckle sizes—4mm, 5mm, and 6mm—integrated into one compact, lightweight tool, the Fastrax 3-in-1 Turnbuckle Wrench delivers uncompromising performance for UK RC car enthusiasts at an affordable price point.

This precision-engineered wrench is constructed from durable, corrosion-resistant metal alloy and features solid grip flats designed to provide excellent torque transfer without slipping or rounding your expensive turnbuckles. Its lightweight, ergonomic shape makes it ideal for trackside pit stops where every second counts, whilst its robust construction ensures it will withstand years of frequent use without degradation. Available now from RC Model Shop, the Fastrax 3-in-1 Turnbuckle Wrench FAST671 represents outstanding value for money and is an essential upgrade for any RC car driver.

Key Features

• 3-in-1 Multi-Size Functionality — This single tool accommodates 4mm, 5mm, and 6mm turnbuckles in one compact design, eliminating the need to carry three separate wrenches and saving valuable space in your pit bag or tool kit. This multi-size approach is particularly useful at the circuit, where quick setup changes can dramatically improve your lap times and overall performance.
• Precision Metal Construction — Manufactured from precision-machined durable metal alloy with a robust, corrosion-resistant finish, the Fastrax FAST671 is engineered to withstand frequent use and maintain its accuracy over many seasons of racing and maintenance. The solid metal construction provides excellent grip and torque transfer, ensuring you can make confident adjustments without the risk of slipping on turnbuckle flats.
• Compact and Lightweight Design — At approximately 90mm in length, 25mm at the widest point, and just 40 grams in weight, this wrench is perfectly proportioned for convenient carrying in pit bags, tool boxes, or your RC car's transport case. Its slim, ergonomic profile makes it comfortable to grip during extended tuning sessions, whether at home or at the racetrack.
• Precision Fit on Turnbuckles — The carefully engineered geometry ensures a precise fit on all 4mm, 5mm, and 6mm turnbuckle flats, reducing the risk of slipping, rounding, or damaging the fasteners. This precision fit is essential for maintaining the integrity of your suspension geometry and ensuring your adjustments remain stable during competition.
• Ideal for Multiple RC Brands — The Fastrax FAST671 is compatible with steering, camber, and suspension turnbuckles found on 1/10 and 1/8 scale RC cars from Traxxas, Tamiya, Xray, Team Associated, Team Losi, HPI, Mugen, Axial Racing, and many other popular manufacturers, making it a universally useful tool for most RC car collections.
• Fast Setup Changes — Whether you're dialling in camber angles before a race, adjusting steering geometry during a pit stop, or performing routine maintenance at home, this wrench enables you to make quick, confident changes to your suspension and steering in moments, keeping your RC car performing at its best.

Technical Performance

The Fastrax 3-in-1 Turnbuckle Wrench is engineered with precision and durability as the primary design objectives. Constructed from high-quality, corrosion-resistant metal alloy and precision-machined to exacting tolerances, this tool is built to deliver reliable performance across thousands of adjustment cycles. The wrench features solid metal grip flats optimised for 4mm, 5mm, and 6mm turnbuckle sizes, allowing you to apply the torque necessary to loosen or tighten suspension and steering components without fear of slipping, which could result in damaged turnbuckles or incorrect geometry settings. At approximately 90mm in length and just 40 grams in weight, the tool is perfectly balanced between functionality and portability, making it equally suited to trackside use during pit stops and home workshop maintenance. The robust construction ensures that the wrench will maintain its dimensional accuracy and performance characteristics even after years of intensive use, making it a worthwhile investment for any RC car enthusiast in the UK. Whether you're competing in formal RC racing events or enjoying casual bashing and maintenance at home, the Fastrax FAST671 delivers the precision and reliability required for professional-grade setup work.

What's in the Box

• 1 × Fastrax 3-in-1 Turnbuckle Wrench 4/5/6mm (FAST671)

Frequently Asked Questions

• What turnbuckle sizes does the Fastrax 3-in-1 wrench fit? — The Fastrax FAST671 accommodates 4mm, 5mm, and 6mm turnbuckles, which cover the vast majority of suspension and steering adjustment points found on 1/10 and 1/8 scale RC cars from manufacturers including Traxxas, Tamiya, Xray, Team Associated, Team Losi, HPI, Mugen, and Axial Racing.
• Is this tool suitable for beginners to RC hobbies? — Yes, absolutely. The Fastrax 3-in-1 Turnbuckle Wrench is an excellent tool for RC beginners and experienced racers alike. Its intuitive design makes it easy to use, and the inclusion of three common sizes in one tool means you won't need to purchase multiple wrenches as you're learning to set up your RC car. The precision fit reduces the likelihood of damaging turnbuckles, which is particularly important when you're still developing your technique.
• What makes the Fastrax wrench better than carrying individual wrenches? — By consolidating three essential sizes into a single, lightweight tool weighing just 40 grams, the Fastrax FAST671 saves space in your pit bag and ensures you'll always have the right size available. You'll never be caught without the correct wrench during a trackside setup change or maintenance session, and the compact design makes it perfect for taking to the circuit or to your local RC car club.
• Can I use this wrench on my RC car from Traxxas, Tamiya, or Xray? — Yes, the Fastrax 3-in-1 Turnbuckle Wrench is compatible with suspension and steering turnbuckles from all major RC car manufacturers, including Traxxas, Tamiya, Xray, Team Associated, Team Losi, HPI, Mugen, and Axial Racing. The 4mm, 5mm, and 6mm sizes cover the most commonly used turnbuckle dimensions across these brands' product lines.
• How durable is the Fastrax FAST671? — The wrench is constructed from precision-machined, corrosion-resistant metal alloy designed to withstand thousands of adjustment cycles without degradation. The robust construction and high-quality materials ensure that this tool will remain accurate and reliable for years of intensive use, whether in competitive racing environments or casual home maintenance. It represents an excellent long-term investment for your RC tool collection.
• What is the weight and size of this wrench? — The Fastrax 3-in-1 Turnbuckle Wrench measures approximately 90mm in length, 25mm at the widest point, and 4mm in thickness, with a total weight of approximately 40 grams. These dimensions make it extremely portable and convenient for carrying in pit bags, tool boxes, or RC car transport cases without adding significant bulk or weight.

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 3-in-1 Turnbuckle Wrench 4/ 5/ 6mm FAST671 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.