Traxxas Big Bore Shock Spring Retainer and Pre-Load Spacer Kit TRX2668

Overview

The Traxxas Spring retainers and pre-load spacer kit (TRX2668) is an essential suspension tuning component designed for Traxxas Big Bore shock absorbers. This comprehensive suspension upgrade kit allows RC enthusiasts and serious hobbyists to fine-tune the performance characteristics of their Traxxas models with precision engineering. Whether you're running an ultimate trail machine like the TRX-6 Mercedes-Benz G 63 AMG 6x6 or any other Traxxas vehicle equipped with Big Bore shocks, this genuine Traxxas accessory gives you the control needed to optimise your suspension setup for different terrain conditions and driving styles.

Suspension tuning is one of the most effective ways to improve your RC car's handling, traction, and overall performance on the trail or track. The spring pre-load spacers included in this kit allow you to adjust spring compression and ride height independently, which directly affects how your vehicle sits on its chassis and how it responds to obstacles and uneven ground. For anyone serious about getting the best performance from their Traxxas RC crawler, buggy, or truck, having the right suspension tuning tools is essential. This kit gives you multiple spacer options to experiment with different setups until you find the perfect balance for your driving style and the conditions you encounter.

RC Model Shop stocks this genuine Traxxas component because we understand that British RC enthusiasts demand quality spare parts and upgrades that deliver real performance improvements. Whether you're modifying a TRX-6, TRX-4, or another model featuring Big Bore shocks, this suspension kit is a must-have addition to your spares collection.

Key Features

• Spring Retainers (Upper and Lower) — This kit includes two spring retainers designed specifically for Big Bore shocks, ensuring secure and reliable spring mounting that prevents springs from slipping or shifting during aggressive driving conditions.
• Comprehensive Pre-load Spacer Range — The kit includes multiple spacer thicknesses (1mm, 1.5mm, 2mm, 4mm, and 8mm) that allow you to dial in precise suspension geometry and spring pre-load settings for your specific vehicle and driving conditions.
• 1mm Spacers (4 pieces) — Four thin spacers provide fine-tuning adjustments for suspension height and spring compression, offering incremental adjustments for precision tuning on the trail.
• 1.5mm Spacers (2 pieces) — A pair of medium-thin spacers gives you additional options for medium-level suspension geometry adjustments when you need more pre-load than the 1mm options but less than the thicker alternatives.
• 2mm Spacers (2 pieces) — These spacers provide moderate pre-load adjustments, useful for changing ride height and how your suspension compresses over obstacles and rough terrain.
• 4mm Spacers (2 pieces) — Thicker spacers for more substantial suspension geometry changes, allowing significant adjustments to spring pre-load and ride height for different driving styles or terrain conditions.
• 8mm Spacers (2 pieces) — The thickest spacers in the kit offer maximum pre-load adjustment, perfect for when you need significant changes to suspension stiffness and vehicle stance.
• Big Bore Shock Compatibility — These components are specifically engineered and tested for Traxxas Big Bore shock absorbers, ensuring perfect fit and reliable performance every time you install them.
• Genuine Traxxas Engineering — As an official Traxxas spare part, this kit meets all Traxxas quality standards and specifications, guaranteeing compatibility and durability across your RC collection.

Technical Performance

The suspension tuning capabilities offered by this spring retainer and pre-load spacer kit represent a fundamental aspect of advanced RC vehicle setup. When used correctly, these components allow you to modify the compression characteristics of your Big Bore shocks, which directly influences how your vehicle handles impacts, maintains traction through corners, and responds to climbing steep obstacles. The variety of spacer thicknesses—ranging from 1mm for fine adjustments through to 8mm for substantial changes—means you have the flexibility to experiment with different suspension geometries and find the optimal setup for your specific driving conditions. For instance, when tackling challenging rocky trails similar to those featured in Traxxas's Ultimate TRX-6 project build, increased spring pre-load may help improve ground clearance and prevent bottoming out over large rocks and ruts. Conversely, reducing pre-load may improve traction on flatter surfaces by allowing the suspension to compress more freely and keeping tyres in contact with the ground. The precision engineering of these Traxxas components ensures consistent performance and durability, whether you're making small micrometre adjustments or significant setup changes. These retainers and spacers work in conjunction with your Big Bore shocks' internal design to deliver the responsive handling and reliable performance that Traxxas vehicles are known for. Proper suspension tuning can make the difference between struggling through an obstacle and conquering it cleanly.

What's in the Box

• Spring retainers, upper and lower (2 pieces total)
• Spring pre-load spacers 1mm (4 pieces)
• Spring pre-load spacers 1.5mm (2 pieces)
• Spring pre-load spacers 2mm (2 pieces)
• Spring pre-load spacers 4mm (2 pieces)
• Spring pre-load spacers 8mm (2 pieces)

Frequently Asked Questions

• What are spring pre-load spacers and why would I need them? — Spring pre-load spacers are thin shims that sit between your shock spring and the shock body, controlling how much the spring is compressed when at rest. By changing spacer thickness, you adjust the effective stiffness of your suspension and your vehicle's ride height. This is essential for fine-tuning how your RC vehicle handles different terrain types, manages obstacles, and maintains traction. Whether you're tackling rocky trails with a TRX-6 or running faster terrain, the right pre-load makes a significant difference in performance.
• Are these spacers compatible with all Traxxas models? — These pre-load spacers are specifically designed for Traxxas Big Bore shock absorbers. Many Traxxas models use Big Bore shocks, including the popular TRX-4, TRX-6, and various other Traxxas crawlers and trail trucks. Always check your vehicle's specification to confirm it uses Big Bore shocks before ordering. If you're unsure about compatibility, our experienced RC team at RC Model Shop can help you identify whether your model will benefit from these components.
• What's the difference between the different thickness spacers? — Thinner spacers (1mm, 1.5mm) allow for incremental fine-tuning adjustments to suspension geometry, useful when you've found a baseline setup and want to make small changes. Medium spacers (2mm, 4mm) offer more substantial adjustments suitable for trying different setups. The thickest spacers (8mm) provide maximum pre-load changes for exploring the full range of your suspension's capabilities. Many RC enthusiasts use combinations of different thicknesses to dial in their perfect setup.
• How do I install spring pre-load spacers on Big Bore shocks? — Installation typically involves removing your shock from the vehicle, unloading the spring tension, and placing your chosen spacer thickness between the spring and shock body. The exact process depends on your specific shock design, so consult your vehicle's manual for detailed instructions. The spring retainers included in this kit help secure the spacer in place and prevent it from shifting during operation.
• Can these spacers help my RC vehicle climb better? — Yes, adjusting spring pre-load can improve climbing ability. Increasing pre-load (using thicker spacers) raises your vehicle's ride height and can prevent bottoming out over large obstacles, keeping your suspension travel available for climbing steep terrain. This is particularly relevant for trail vehicles like the TRX-6, where maximising suspension performance on challenging rock gardens and steep slopes is crucial for success.
• Is this suitable for beginners? — While suspension tuning is somewhat advanced, this kit is perfect for anyone ready to move beyond stock suspension setup. If you're comfortable removing and reinstalling shocks on your RC vehicle and understand how suspension affects handling, you'll be able to use these spacers effectively. Many RC hobbyists find that experimenting with pre-load is one of the most rewarding upgrade experiences, as you quickly learn how suspension changes affect your vehicle's behaviour.
• Are these genuine Traxxas parts? — Yes, this is an official Traxxas spare part (model TRX2668) manufactured to exacting Traxxas standards. When you purchase from RC Model Shop, you receive genuine components that will fit and function perfectly with your Traxxas Big Bore shocks, giving you the quality assurance you expect from Traxxas.

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 Traxxas Spring retainers, upper & lower (2 pcs) / spring pre-load spacers: 1mm (4 pcs) / 1.5mm (2 pcs) / 2mm (2 pcs) / 4mm (2 pcs) / 8mm (2 pcs) (Big Bore shocks) TRX2668 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.