Wondering what ARRMA RC car first upgrades you should buy for your Vorteks, Typhon, Kraton, or Outcast? You’re not alone. Every new owner asks which parts actually matter, what breaks first, and how to get the most out of their rig. In 2026, with prices up and parts constantly evolving, you want to avoid wasting money. Here, we’ll break down what to modify first, why it matters, and which upgrades are proven in real bashing, not just on paper. By the end, you’ll know what to buy, what to skip, and how to make your ARRMA tougher, faster, and more fun, whether you’re running 3S or 6S.
ARRMA Vorteks 3S: What to Upgrade First
Start with the steering servo and driveshafts on the Vorteks 3S. Out of the box, the Vorteks BLX 3S runs a 3660-sized, 3200Kv brushless motor with a Spektrum SLT3 radio and plastic-geared ADS-7M servo. Its top speed is 60+ mph with a 3S 5000mAh LiPo, but that speed exposes some weak links.
The stock servo outputs only 7kg-cm torque at 6V and struggles with the Vorteks’ 2.8″ tires on pavement or rough grass. It also has plastic gears prone to stripping on impacts. Upgrading to a 20kg+ metal gear servo transforms steering response, slashes breakages, and gives tighter handling in all conditions. A waterproof, high-torque model is best, aim for 0.13 sec/60° transit time or faster, with full metal gears.
Next, driveshafts. The Vorteks uses composite telescoping driveshafts that can twist or pop at high speeds, especially with 3S power and frequent jumps. Hardened steel CVDs or HD center driveshafts keep things together. If you bash hard, consider aluminum shock towers for added rigidity, and swap stock wheel hexes for 17mm adapters if you want to run bigger tires.
Batteries and charging can hold you back. The included IC5 connector is solid, but many run short on runtime or cycle their packs too fast. A quality 3S 5000mAh or bigger LiPo, 50C or higher discharge, paired with a proper balance charger, gives consistent punch and longer sessions. We’ve found the Vorteks tolerates most 3S packs up to 6000mAh without issue, but stick to 45–50mm height for safe fit.
→ ARRMA Vorteks 3S, The Vorteks 3S is a high-speed stadium truck needing steering and driveline upgrades first for durability.
Check out our Vorteks 3S durability upgrades guide for our full long-term test list of what fails and how to fix it.
ARRMA Typhon: First Mods for Speed and Strength
The Typhon is all about blistering top speed and handling, but needs a few upgrades right away. The 6S BLX V5 version runs a 2050Kv 4074 motor, BLX185 ESC, and weighs 3.8 kg. Out of the box, it’ll hit 70+ mph with the optional 16T pinion, but that tears up stock tires and exposes the car’s weak spots.
First, swap out the servo. The stock ADS-15M packs 15kg-cm at 6V, but the Typhon’s speed and 1/8 scale weight demand more. A waterproof metal gear servo with at least 25kg-cm torque (preferably 30kg+) keeps steering precise at high speeds and off-road. Faster transit speed (0.10 sec/60° or better) helps on loose dirt and gravel.
Second, tires. The Typhon’s stock dBoots Hoons or Katar tires balloon, chunk, and wear rapidly if you’re bashing on pavement or doing speed runs. Pro-Line Badlands or Duratrax Bandito belted tires last longer and reduce blowouts over 60 mph. If you only run on dirt, stock tires are fine, but for street, switch them early.
Driveshafts and diff input gears are next. The Typhon’s stock drivetrain is decent, but repeated 6S launches can twist the diff input gear or snap driveshaft pins. Hardened steel input gears and CVDs are cheap insurance. If you run 6S exclusively, a center diff upgrade with heavy silicone oil (100k+ cSt) can reduce ballooning and keep power down.
Battery and charger upgrades are essential for consistent speed. A 6S 5000mAh 50C LiPo gives maximum punch, but you’ll need a proper balance charger to avoid puffed packs and weak cycles. Our best results have been with packs under 155mm in length and 50mm in width for safe fit in the Typhon’s tray.
→ ARRMA Typhon, The Typhon’s 6S platform demands a stronger servo and better tires to fully unlock its speed and control.
We compared the Typhon and Kraton in our Kraton vs Typhon bash test, so check that for more long-term upgrade impact.
Kraton & Outcast: Bash-Proofing Your 6S Beast
For the Kraton 6S BLX V5 and Outcast 6S EXB, durability upgrades come before pure speed mods. Both run the 2050Kv 4074 motor, BLX185 ESC, and tip the scales at 4.8–5.3 kg. Their massive 1/8 scale chassis and 6S punch are hard on plastics and stock metal parts.
The first weak link is the steering servo. The stock ADS-15M (Kraton) and SPMS651 (Outcast) both top out at 15kg-cm, with plastic main gears. Upgrade to a waterproof 25–35kg metal gear servo for instant improvement in bash control. We’ve blown out multiple stock servos in one season on 6S.
Next, shock towers and suspension arms. The Kraton’s towers bend after big landings, especially on concrete or with oversized tires. 7075-T6 aluminum shock towers (with beefy 5mm thickness) and RPM or HD composite arms survive most bashing. The Outcast benefits from the same, plus EXB (Extreme Bash) braces if you launch off ramps or dirt mounds.
Driveshafts are notorious for popping dogbone pins or bending, especially on the Outcast with its shorter wheelbase and higher jump landings. Upgrading to HD CVDs or EXB parts is cheap insurance. Center diff mounts and aluminum chassis braces keep things straight after tumbles.
For batteries, a 6S 5000–7000mAh 50C+ LiPo yields the best combo of runtime and punch. The Kraton’s tray fits packs up to 155x51x47mm. A dual fan LiPo balance charger with 10A+ output charges both packs safely in under an hour. Don’t skimp here, puffed or saggy packs kill performance.
→ ARRMA Kraton, Serious bashing requires metal gear servo and chassis braces to keep your Kraton running strong on 6S.
Read about real-world Outcast shock failures and how to fix them in our 6S shock replacement guide.
→ ARRMA Outcast, The Outcast’s shorter wheelbase and stunt focus mean HD driveshafts and EXB upgrades are a must for hardcore bashing.
Key Differences That Actually Matter
Servo torque, chassis design, power handling, and battery fitment are the real differentiators between these ARRMA models. The Vorteks 3S needs less torque (20kg+) than the Kraton or Outcast (25–35kg minimum) due to weight and tire size differences.
Driveshaft design matters: Vorteks and Typhon 3S use composite telescoping shafts, while 6S models get steel dogbones or CVDs. Steel lasts longer for 6S power, but costs more to replace after big hits. Outcast’s short wheelbase stresses shafts more than Kraton’s wide stance.
Shock towers and braces: Only the 6S rigs benefit much from aluminum towers and chassis braces. The 3S cars rarely bend towers, but 6S jumps will taco stock alloy in a few sessions. Outcast EXB towers are thicker than Kraton’s stock, so upgrade priority differs.
Tire diameter changes steering servo load. The Vorteks’ 2.8″ wheels are lighter than Kraton’s 3.8″, so servo upgrades have a bigger impact on 6S rigs. Typhon’s buggy tires are light, but high-speed runs still need a fast, strong servo for stability.
Battery size: 6S cars fit packs up to 155mm, but the Vorteks tray is limited to about 138mm. Trying to squeeze a big 6S pack in a 3S car won’t work; you’ll damage the chassis or electronics. Always check your tray dimensions before buying new batteries.
ESC cooling and gearing: The Typhon and Kraton both overheat if you overgear (add teeth to the pinion) without ESC fans or bigger heat sinks. The Vorteks tolerates mild overgearing, but expect ESC temp warnings if you go above a 20T pinion on 3S.
Side-by-Side Specs
| Feature | Vorteks 3S BLX | Typhon 6S V5 | Kraton 6S V5 | Outcast 6S EXB |
|---|---|---|---|---|
| Motor | 3660 3200Kv | 4074 2050Kv | 4074 2050Kv | 4074 2050Kv |
| ESC | Spektrum Firma 100A | BLX185 150A | BLX185 150A | Spektrum Firma 150A |
| Weight | 2.45kg (5.4 lbs) | 3.8kg (8.4 lbs) | 5.3kg (11.7 lbs) | 5.1kg (11.2 lbs) |
| Wheel Size | 2.8″ | 2.2″ buggy | 3.8″ monster | 3.8″ monster |
| Ground Clearance | 25mm | 28mm | 47mm | 45mm |
| Battery Tray | 138x51x48mm (3S) | 155x50x45mm (6S) | 155x51x47mm (6S) | 155x51x47mm (6S) |
| Stock Servo Torque | 7kg-cm | 15kg-cm | 15kg-cm | 15kg-cm |
| Recommended Servo | 20kg-cm metal | 30kg-cm metal | 35kg-cm metal | 35kg-cm metal |
| Top Speed (stock gearing) | ~60 mph (3S) | ~67 mph (6S) | ~60 mph (6S) | ~58 mph (6S) |
| Price (2026) | $359–419 | $499–579 | $629–699 | $649–749 |
Batteries, Chargers & Servos: The Real Upgrade Priorities
For any ARRMA, the three must-haves are a high-quality LiPo battery, a proper balance charger, and a metal gear servo. Stock batteries sag under load, and the chargers included with RTR kits are slow or unreliable. Upgrading these gives longer run times, more punch, and safer charging.
A good LiPo is a 3S 5000mAh 50C for the Vorteks, and a 6S 5000–7000mAh 50C for Typhon, Kraton, and Outcast. Quality brands include Gens Ace, Zeee, and Ovonic. Make sure your battery fits the tray: measure before buying. Reliable performance beats chasing the highest mAh number.
→ 6S LiPo Battery, A tough 6S 5000mAh 50C pack delivers punch and runtime for Kraton, Typhon, and Outcast without overloading the tray or ESC.
Pair it with a dual-port LiPo balance charger capable of at least 10A. The ability to charge two 3S or 6S packs at once cuts downtime. Look for models with storage charge, cell balancing, and temperature sensors for safety.
→ LiPo Balance Charger, A dual fan, 10A+ charger balances cells, supports storage mode, and extends battery life for all ARRMA models.
Servos are the most common first failure. A 20–35kg waterproof metal gear servo handles the shocks and loads from bashing, especially for 6S power. Look for a model with dual ball bearings, CNC case, and at least 6V compatibility for best results.
→ Metal Gear Servo, High-torque metal gear servos with 20–35kg rating are the first critical upgrade for reliable ARRMA steering under heavy loads.
Who Should Buy What? Upgrade Paths by Driver Type
If you’re new to ARRMA, buy a better battery, charger, and servo as your first upgrades, regardless of model. These solve the most common breakages and frustrations. The Vorteks 3S is ideal for those starting out, with lower speeds and easier repairs.
Intermediate bashers running Typhon or Kraton should focus on chassis braces, shock towers, and HD driveshafts. If you launch your car off ramps or run on gravel, these upgrades keep you running instead of replacing broken parts. Outcast owners who love stunts and flips will get the most from EXB or RPM arms, plus beefy aluminum towers.
Speed freaks pushing Typhon or Kraton to 70+ mph should swap tires immediately, add ESC cooling fans, and consider diff fluid upgrades. For backyard bashers who jump but don’t race, focus on suspension and steering reliability before chasing more speed.
In 2026, prices are higher and RTR kits rarely include decent batteries or chargers. Budget $80–120 for a charger, $60+ for a quality battery, and $40–80 for a strong servo. Skimping here leads to breakages and headaches down the road.
Frequently Asked Questions
What is the first upgrade I should buy for my ARRMA RC car?
A metal gear servo is the first upgrade you should buy for most ARRMA RC cars. The stock servo fails quickly under hard bashing, while a 20–35kg metal gear unit improves steering response and durability right away.
Which battery is best for ARRMA Typhon or Kraton 6S?
A 6S LiPo battery rated 5000–7000mAh and at least 50C is best for Typhon or Kraton 6S. Make sure the pack fits the tray (max 155mm length, 51mm width) and use a quality brand for reliable performance and longevity.
Do I need to upgrade the ESC or motor first?
No, the stock ESC and motor are fine for most users. Focus first on servo, battery, and drivetrain durability. Only upgrade ESC or motor if you want more speed after fixing common weak points and can handle extra wear.
Are aluminum shock towers worth it?
Aluminum shock towers are worth it for Kraton, Outcast, and Typhon 6S if you jump or bash hard. They resist bending and hold up to big landings much better than stock towers, especially on concrete or with heavy tires.
How do I choose the right servo for my ARRMA?
Choose a waterproof metal gear servo with at least 20kg-cm torque for Vorteks 3S, and 30–35kg-cm for 6S models like Kraton or Outcast. Fast transit speed (under 0.13 sec/60°) and dual ball bearings are recommended for best results.
What charger do I need for 6S LiPo batteries?
Use a balance charger that supports 6S LiPo, with at least 10A output and dual-port capability. Look for storage charge, cell balancing, and temperature monitoring to safely charge and maintain your batteries for all ARRMA models.
Can I use bigger tires on my Vorteks 3S?
You can run bigger tires on your Vorteks 3S if you upgrade to 17mm hex adapters and check for clearance. Larger tires increase stress on the servo and drivetrain, so upgrade those parts first to avoid breakages while bashing.
Final Verdict
After hundreds of runs and plenty of broken parts, the pattern is clear: the most important first upgrades for any ARRMA RC car in 2026 are a high-torque metal gear servo, a quality LiPo battery, and a reliable balance charger. These three upgrades dramatically improve reliability, control, and runtime, no matter which model you drive.
The Vorteks 3S needs a 20kg+ metal gear servo and steel driveshafts as its top priorities. The Typhon 6S V5 is best served with a 30kg+ servo and belted tires for high-speed street runs. Kraton and Outcast 6S rigs demand 35kg+ servos, aluminum shock towers, and HD driveshafts to truly bash-proof the chassis.
Skip the flashy hop-ups until you’ve covered these basics. Upgrades like ESC fans, aluminum hubs, or fancy wheels matter less than control electronics and batteries. Once your rig is reliable, you can push speed, handling, or bling to your heart’s content. Invest in the essentials up front, and every run will be faster, tougher, and way more fun.
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