What should you upgrade first on a Traxxas Slash: the shocks, tyres, battery or something smaller? The best upgrade is the one that fixes what you notice when you drive. Start with fitment and condition, then choose parts to suit your terrain and driving style. You’ll get a more rewarding truck without changing everything at once.
Key Takeaways
- Identify your exact Slash first: 2WD, 4X4 or 1/16 versions do not share every part.
- For a noticeable change in handling, start with terrain-appropriate wheels and tyres or a well-matched suspension refresh.
- A clipless bodyshell can quickly refresh the truck’s look and make body removal easier.
- Upgrade from NiMH to LiPo only if your model’s ESC, battery tray and connector support the pack.
- Keep compatible wear-and-tear spares handy; check the parts diagram before ordering.
AT Models stocks several Slash variations, including the Slash VX3 brushless 4X4, Slash VXL EHD 4X4, Slash 2WD Fox VXL with TSM, and a 1/16 4X4 with Titan 550 motor and USB-C charger. The specification and parts compatibility depend on the version, so browse the Traxxas Slash range and confirm your model before choosing upgrades.
1. Refresh the suspension for better control
Does your Slash bounce, bottom out or feel unsettled over rough ground? Check the shocks before assuming you need a complete suspension conversion. Oil-filled shocks slow the suspension’s movement: this is damping. It helps the tyres stay in contact with the surface while the chassis settles after bumps and landings.
A quality shock body can give you a sturdy platform for setup changes. The genuine Traxxas Big Bore shocks have T6 aluminium bodies with a PTFE coating. They are supplied assembled but without springs, so check spring compatibility and reuse or select suitable springs for your setup. The long front pair and XX-long rear pair are different lengths; match the shock position and your truck version before buying.
Shop Traxxas Big Bore long front shocks
Shop Traxxas Big Bore XX-long rear shocks
For a more tuneable rear shock option, the Pro-Line PowerStroke rear shock pair is described as fitting stock Slash 2WD and 4X4 suspension. Its aluminium body, thicker shafts and adjustable spring preload support setup changes. Check current availability and fitment carefully, and pair it with compatible front shocks if you’re building a matched set.
Pro tip: Change one variable at a time. Make sure the shocks are leak-free and the suspension moves freely before altering springs or oil. For more on setup, browse the AT Models blog.
2. Match wheels and tyres to your usual surface
Where do you drive most: grass, loose dirt, gravel or a hard-packed track? The tyre has a direct influence on how confidently the Slash accelerates, corners and brakes. A terrain-matched set can make the truck feel more composed without changing its electronics.
Keep fitment in mind as well as grip. 2WD front and rear wheel offsets can differ, while 4X4 fitment has its own requirements. For example, the Traxxas Kumho set below is identified for 2WD rear or 4WD front/rear use. That specific placement is a useful reminder: don’t assume a wheel that fits one corner suits every corner.
Shop Traxxas Kumho wheels and tyres
A wider tyre footprint may add grip where the chassis and wheel fitment allow it, but bigger or grippier tyres can also increase the load on the drivetrain. Choose for the surface you actually run on, and check wheel position, hex size and clearance. Some short-course wheels also have beadlock-style detailing for a tougher look; check whether a particular wheel is a styling feature or a functional beadlock design.
Browse RC car wheels and tyres to find options, and check the specific listing for Slash fitment. For a deeper introduction to tyre choice, see the RC car wheels and tyres category.
3. Give the truck a fresh clipless bodyshell
Is your shell cracked, scuffed or simply ready for a new look? A painted replacement is a straightforward way to personalise the Slash and refresh its appearance. A clipless body uses latches rather than traditional body clips to secure the shell, making removal and refitting convenient on compatible models.
The blue painted shell below is listed for Slash applications and includes front and rear latches for clipless mounting. Red and green painted options are available too. Shells can differ by version, so verify the fit and mounting system against your exact truck.
Shop the blue painted clipless bodyshell
More colour options: red and green.
4. Consider LiPo power only when the model supports it
Still running NiMH and want a livelier response? A LiPo battery can provide a different power experience, but compatibility comes first. NiMH is a rechargeable battery chemistry commonly supplied with ready-to-run models; LiPo packs require the right charging equipment and careful handling.
Before switching, check your model’s manual and confirm the battery chemistry and cell count are supported by its ESC: the electronic speed control that governs power from the battery to the motor. Also check the battery tray dimensions and connector. A pack fitting physically does not prove that it is electrically suitable.
Some Slash brushless versions already include the Velineon power system and support compatible LiPo packs, so replacing the motor and ESC may not be the right first move. Start with the specified battery type and a sensible cell count for your particular model. Use a compatible balance charger for LiPo and follow the battery maker’s charging and storage guidance.
View the Traxxas 3S LiPo battery · Browse LiPo batteries · Browse battery and charger bundles
5. Keep small durability parts within reach
What usually stops a Slash session: a major failure, or a small damaged part? Often, a worn or broken component is all that’s needed to park the truck. Inspect the underside and suspension after a hard run. Skid plates help shield exposed chassis areas; a bulkhead or brace replacement can restore support if the original part is cracked or bent.
The right replacement depends on the specific truck. The Slash spares and parts category covers Slash components, while the Slash 4X4 spares category is for 4X4 models. These platforms are not interchangeable across the board.
A parts finder can help narrow parts down by model. If you’re doing your own repairs, browse RC tools and use the correct driver size to help protect screw heads.
6. If you have a 2WD Fox, make the most of TSM
Does the rear of your 2WD Slash step out under power? The Slash 2WD Fox VXL includes Traxxas Stability Management (TSM). It modulates steering assistance to help counteract unwanted rotation, while still letting you control the truck. It’s a useful feature to understand before spending on radio upgrades: first check the transmitter settings and make sure the system is set up for your driving.
A sensible order for Slash upgrades
Want a simple plan? Work from the biggest practical benefit to the more specialised changes:
- Check the truck’s condition and identify its exact version.
- Choose wheels and tyres for your regular surface.
- Refresh or tune the suspension if the handling calls for it.
- Replace a damaged shell or choose a painted clipless option.
- Consider battery changes only after checking ESC, connector and tray compatibility.
- Keep model-specific wear parts available for repairs.
For gearing or differential setup, keep the changes tied to your exact model and intended use; we’ve covered that subject separately in the AT Models blog.
Key Takeaways
- Start with your exact Slash version and its part compatibility.
- Tyres and suspension are practical first upgrades for changing how the truck drives.
- A painted clipless bodyshell offers a quick visual refresh on compatible models.
- Treat a LiPo conversion as a system-compatibility decision, not just a battery swap.
- Use the Slash parts categories and parts finder to help select the right replacement.
Upgrade thoughtfully, keep the original parts where practical, and test each change before moving to the next. If you’re unsure which part fits, our team’s RC experience is here to help you keep the Slash running and discover what it can do next.
