Overview
The Associated AS31389 Washers are precision-engineered blue aluminium shimming components designed specifically for RC car enthusiasts in the UK who demand professional-grade tuning capabilities. These 7.8 x 3.5 x 2.0mm washers represent the perfect solution for anyone running 1/10 or 1/8 scale RC vehicles who wants to fine-tune their chassis setup with absolute accuracy. Whether you're competing at the track or enjoying weekend bashing sessions, these washers deliver the exact spacing adjustments needed to optimise your RC car's performance.
Manufactured by Associated Electrics, a name synonymous with quality RC components, these blue aluminium washers are an essential part of any serious RC car UK enthusiast's spares collection. The 2.0mm thickness variant offers significant adjustability for wheelbase modifications and general shimming requirements across multiple vehicle platforms. Available in a convenient pack of 10, these washers provide excellent value and ensure you always have spares on hand when you need them most.
What sets these washers apart is their versatility and precision engineering. Unlike generic washers, these Associated components are specifically engineered to work seamlessly with RC8B3 and RC8T3 series vehicles whilst remaining compatible with a vast range of other 1/10 and 1/8 scale platforms. The blue aluminium construction not only looks professional but provides an ideal balance of lightweight durability and strength, making these washers the go-to choice for dedicated RC car UK builders who understand the importance of quality hardware in chassis tuning.
Key Features
- Precision 7.8 x 3.5 x 2.0mm Dimensions — These exact measurements ensure compatibility with standard RC car hubs and mounting points, allowing you to achieve precise spacing adjustments without the guesswork that comes with generic washers or improvised spacers.
- Blue Aluminium Construction — The aluminium material provides an excellent strength-to-weight ratio, ensuring your RC car's performance isn't compromised by heavy hardware whilst maintaining the rigidity needed for stable chassis geometry during demanding driving conditions.
- 2.0mm Thickness Variant — This specific thickness is ideal for significant wheelbase adjustments and major shimming tasks, giving you the flexibility to make substantial changes to your setup when fine-tuning for different track conditions or driving styles.
- Pack of 10 Washers — Rather than buying single units, this pack of 10 ensures you have multiple washers available for simultaneous adjustments across different areas of your RC car, plus spares for future projects or replacement if any get damaged during use.
- Part of a Complete Range — These washers are available alongside 0.5mm, 1.0mm, and 2.0mm thickness variants, allowing you to build a complete shimming kit and tailor spacing to your exact setup needs with micro-adjustments or major modifications as required.
- RC8B3 and RC8T3 Series Compatibility — Specifically suited as rear hub spacers for adjusting wheelbase on these popular Associated platforms, ensuring perfect fitment and reliable performance when optimising your vehicle's handling characteristics.
- General 1/10 and 1/8 Scale Application — Beyond the specific RC8 models, these washers work across a wide range of 1/10 and 1/8 scale RC buggies, trucks, and truggy platforms wherever shimming and chassis tuning is required, making them an essential part of every RC hobbyist's toolkit.
Technical Performance
The ASSOCIATED AS31389 washers exemplify the engineering excellence expected from one of the RC industry's most respected manufacturers. Constructed from blue aluminium, these components offer an optimal balance of weight savings and structural integrity that's critical in competitive RC car UK applications. The 2.0mm thickness provides sufficient material to resist deformation under load whilst remaining light enough not to impact your vehicle's overall weight distribution or performance characteristics. These washers are specifically engineered for precision applications where exact spacing is essential—whether you're adjusting rear hub positions to modify your RC car's wheelbase, fine-tuning suspension geometry, or shimming components to eliminate unwanted play. The 7.8mm outer diameter and 3.5mm inner diameter measurements ensure universal compatibility across multiple mounting points and vehicle platforms, from the RC8B3 and RC8T3 series through to countless other 1/10 and 1/8 scale models. The blue anodised finish not only provides a professional appearance but offers corrosion resistance, essential for RC cars that encounter moisture during outdoor driving sessions. Each pack of 10 washers represents excellent value for money, particularly when you consider that serious RC enthusiasts typically need multiple sets for building a complete tuning library and maintaining spares for ongoing maintenance and adjustments.
What's in the Box
- 10 x Associated 7.8 x 3.5 x 2.0mm blue aluminium washers
Frequently Asked Questions
- Are these washers suitable for my 1/10 scale RC buggy or truck? — Yes, absolutely. These Associated AS31389 washers are designed for general use on 1/10 and 1/8 scale RC vehicles, making them compatible with buggies, trucks, and other platforms. They're particularly well-suited to RC8 series models, but work across numerous other manufacturer platforms where 7.8 x 3.5mm mounting points exist.
- What's the difference between the 0.5mm, 1.0mm, and 2.0mm thickness variants? — Each thickness variant allows different magnitudes of adjustment. The 0.5mm washers provide micro-adjustments for fine-tuning, the 1.0mm offers moderate spacing adjustments, and the 2.0mm variant (this product) delivers significant wheelbase modifications and major shimming tasks. Most serious RC enthusiasts own all three thicknesses to have complete flexibility in their setup options.
- Can I use these as rear hub spacers on my RC8B3 or RC8T3? — These washers are specifically engineered as rear hub spacers for the RC8B3 and RC8T3 series, making them an ideal choice if you own either of these popular Associated vehicles. They allow you to adjust wheelbase precisely, which directly impacts handling characteristics and performance on different track layouts.
- Why should I choose blue aluminium washers over steel alternatives? — Aluminium washers offer significant weight savings compared to steel whilst still providing excellent strength and rigidity. For RC cars where every gram impacts performance, using aluminium components throughout your build helps optimise acceleration, braking, and handling without sacrificing structural integrity or durability.
- What shimming tasks can I perform with these washers? — These 2.0mm washers are ideal for wheelbase adjustments, hub spacing modifications, suspension geometry tuning, and eliminating component play or slop throughout your RC car's chassis. They're essential for competitive drivers who need to dial in their setup precisely for different track conditions.
- How many washers should I purchase for my RC car? — One pack of 10 provides sufficient washers for multiple simultaneous adjustments or complete setup of several vehicles. Many RC enthusiasts purchase multiple packs to build a comprehensive tuning library that includes all three thickness variants, ensuring they can make any adjustment their setup requires.
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 ASSOCIATED WASHERS 7.8 x 3.5 x 2.0mm BLUE ALUMINIUM (10) AS31389 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.
- Brand: Associated Electrics
- Model Number: AS31389
- Product Type: Blue Aluminium Washers
- Outer Diameter: 7.8mm
- Inner Diameter: 3.5mm
- Thickness: 2.0mm
- Material: Blue Aluminium
- Quantity per Pack: 10 washers
- Finish: Blue Anodised Aluminium
- Scale Compatibility: 1/10 and 1/8 scale RC vehicles
- Specific Vehicle Compatibility: RC8B3 series, RC8T3 series
- Primary Application: Rear hub spacers for wheelbase adjustment
- Secondary Applications: General shimming and chassis tuning, suspension geometry adjustment, component spacing and play elimination
- Part of Range: Available in 0.5mm, 1.0mm, and 2.0mm thickness variants
- Barcode: 784695313897
- Fitment Type: Standard Part
- Cross-Model Compatibility: Compatible with multiple 1/10 and 1/8 scale platforms including T6.1, RC10SC6.1, SC10.3, TC7.2, B74, B6.2D, B6.2, B6.1DL, RC8B3.2, RC8B3.2E, RC8T3.2, Element Gatekeeper, B74.1, Reflex DB10, Pro2 SC10, B6.3, RC8B4, RC8B4E, B6.4D, B6.4, B74.2D, B74.2, RC8T4E, RC8T4, RC10CC Classic Clear, RC8B4.1, RC8B4.1E, B7, B7D
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