If you’re searching for the best ARRMA Grom upgrades for your Typhon Grom or Mini Kraton, you’re not alone. These compact bashers are everywhere in 2026, but stock parts only take you so far. This guide breaks down the real-world mods, accessories, and tweaks you need to turn your Grom into a true performer. Whether you want better steering, more lights, tougher gears, or just to stop stripping plastic parts every weekend, we’ve actually run these upgrades and know what works. You’ll walk away knowing which upgrades matter, where your money gets the most fun per dollar, and how to avoid the most common Grom headaches.
ARRMA Typhon Grom: Must-Do Upgrades & Specs
The Typhon Grom’s best upgrades focus on steering response, lighting visibility, and drivetrain durability. We found the stock Typhon Grom’s servo and plastic gears start to fail after 25+ hard packs, especially on rough surfaces and jumps.
The Typhon Grom, released in late 2025, is a 1/18 scale 4WD buggy featuring a 2S LiPo-ready 380 brushed motor (32,000 RPM max), waterproof electronics, and a 2.4GHz radio. Weight is 674g (1.49 lbs) with battery. Out of the box, it handles pavement, dirt, and short grass fairly well, but the servo is rated at just 1.8kg-cm torque at 6V. That’s barely enough for sharp turns, and totally underpowered once you install grippier tires or hit rougher tracks.
We’ve snapped two stock servo horns and stripped countless plastic gears after minor landings. The plastic servo saver is also a weak point: it can’t absorb hits, so the gears chew themselves up, leading to slop and unpredictable steering. Our top upgrade here is a metal gear servo, ideally 9-12g class, with at least 2.5kg-cm torque. You’ll feel the difference immediately when carving tight corners or blasting off jumps.
Lighting is another key mod. The Typhon Grom’s body is perfect for a low-profile LED light bar or two bumper-mounted spots. We use a 5V plug-and-play LED kit that ties into the receiver, weighs under 10g, and lets you bash after dark. Our group runs night races, and the stock rig disappears quicklyLEDs make a huge difference.
Drivetrain upgrades are a must if you plan to run 2S LiPos hard. Upgrade the center driveshaft to steel and swap the spur gear for a hardened steel or aluminum option. The stock plastic ones will last maybe 15-20 packs before the teeth start going. Don’t forget wheel nuts: the tiny 7mm nuts can back off, so use serrated or nylock replacements. That alone saved us endless tire hunts in the park.
→ ARRMA Typhon Grom, The base buggy for all these upgrades, with solid 4WD and endless mod potential. If you don’t have one yet, grab one before they sell out for summer 2026.
Mini Kraton: What to Upgrade First & Performance
For the Mini Kraton, the most critical upgrades are steering reliability, shock durability, and battery system. We saw repeated failures on curb jumps and backyard ramps, especially after 10–12 hard runs.
The Mini Kraton, also 1/18 scale and launched in spring 2026, shares much of the Typhon Grom’s chassis but has a wider stance (194mm vs Typhon’s 170mm), monster truck wheels (53mm diameter), and a higher ground clearance at 33mm. Stock weight is 728g (1.60 lbs), and it runs the same 380 brushed motor but with a different gear ratio (12T pinion, 61T spur for about 3.5:1, giving more torque).
Our first Mini Kraton upgrades always focus on the servo saver. The heavier wheels and extra leverage mean the stock saver wears out in 3–4 sessions if you hit rough terrain. A direct-fit aluminum servo saver, preferably with an adjustable tension spring, dramatically boosts steering precision and protects the servo from impacts.
The next weak link is the shocks. The plastic shock bodies flex and leak when you start going big on jumps or running in cold weather. We swap them for alloy-bodied oil-filled units, usually in the 55–60mm range, with 200–250cst silicone oil. This keeps rebound stable and stops the car from pogoing on hard landings.
Battery upgrades come next. The Mini Kraton can handle 2S LiPos up to 1600mAh, but we recommend 1000–1300mAh for a good balance of weight and runtime (~12-15 minutes per pack). Reliable balance chargers and safe LiPo storage are a must, especially if you want to push these little trucks to their limits. Over-discharging even one pack will fry the ESC in no time.
→ ARRMA Mini Kraton, The monster truck Grom with wider stance and all-terrain fun, perfect if you want to start upgrading right away.
Key Differences That Actually Matter
The main upgrade differences between the Typhon Grom and Mini Kraton are in steering load, suspension needs, and body clearance. The Typhon Grom’s narrow chassis and lighter wheels demand less from the servo and suspension, while the Mini Kraton’s width and heavier tires mean higher stress on every part.
First, servo load. The Mini Kraton’s monster wheels require at least 2.8kg-cm torque for proper steering, especially in grass or gravel. By contrast, you can get away with 2.3kg-cm on the Typhon Grom if you don’t run oversized tires. If you’re installing a metal gear servo, always check your exact wheel size and planned terrain.
Second, suspension. The Typhon’s shorter shocks (48mm eye-to-eye) are fine for tarmac and light dirt, but bottom out fast on sidewalk drops. The Mini Kraton’s longer shocks (55–60mm) let you clear curbs and uneven park terrain, but only if you swap the stock oil with something thickerfactory fluid is closer to 100cst, which is too thin for real bashing.
Third, body and accessory clearance. The Typhon Grom’s sleek body makes LED mount installs easy, but there’s little room for bigger battery packs. The Mini Kraton can fit chunkier LED bars and 1300mAh packs, but you’ll need to watch heat buildup around the ESC and motor, especially on 90°F+ summer days. We’ve seen melted wire covers after 25-minute runs at high temps.
Finally, gear ratios. The Typhon Grom ships with an 11T pinion and 60T spur (ratio of 5.45:1), giving a top speed of 28km/h (17.4mph) on 2S LiPo and stock tires. The Mini Kraton sacrifices top end (about 24km/h/15mph) for torque, making it better for grass and jumps, but less fun for speed runs. Changing the pinion or spur will affect both speed and durabilitygo too high, and you’ll melt the pinion; go too low, and the ESC overheats faster.
Side-by-Side Specs
| Feature | Typhon Grom | Mini Kraton |
|---|---|---|
| Scale/Type | 1/18 Buggy | 1/18 Monster Truck |
| Release Year | 2025 | 2026 |
| Wheelbase | 153mm | 153mm |
| Track Width | 170mm | 194mm |
| Ground Clearance | 23mm | 33mm |
| Weight (with battery) | 674g (1.49 lbs) | 728g (1.60 lbs) |
| Motor | 380 Brushed (32,000 RPM) | 380 Brushed (32,000 RPM) |
| Stock Servo Torque | 1.8kg-cm @ 6V | 2.0kg-cm @ 6V |
| Pinion/Spur | 11T/60T (5.45:1) | 12T/61T (5.08:1) |
| Wheel Diameter | 43mm | 53mm |
| Top Speed (2S) | 28km/h (17.4mph) | 24km/h (15mph) |
| Shock Length | 48mm | 55–60mm |
| Stock Tire Type | Low-profile Buggy | All-Terrain Monster |
| Battery Compartment | 95x35x18mm | 105x40x20mm |
| MSRP (2026) | $109–$119 | $119–$129 |
Night Bashing, Dirt, and Real-World Upgrades
The Typhon Grom and Mini Kraton both shine when you match upgrades to your terrain. For night running, an LED light kit is a game changer. We use 5V waterproof LED bars that plug directly into the receiver’s auxiliary port. Install takes 10 minutes, and the added visibility lets you rip through parking lots or dirt trails well past sunset.
Bashing in dirt or gravel? A metal gear servo and reinforced servo saver are your best friends. The constant vibrations and small rocks will destroy plastic gears in under five runs. On both models, the servo sits low and is exposed, so a metal gear upgrade (ideally with ball bearings) is mandatory if you like jumps and rough tracks. For reference, our group has run metal gear servos at 3.5kg-cm torque for over 60 packs without a single stripped gear, even after some nasty cartwheels.
Battery and charger upgrades often get overlooked, but they’re crucial. Stock wall chargers take 3–4 hours to charge a 2S 1000mAh pack. A proper LiPo balance charger cuts that to 40 minutes and keeps your packs healthy by balancing cells every cycle. We use compact AC/DC chargers that can handle 2–6S, with adjustable current. And for the pack itself, a 2S 1300mAh soft case LiPo fits both cars, but don’t exceed 20C discharge unless you want to risk ESC damage.
For the Kraton Grom and Typhon Grom, we’ve tested shock upgrades from several brands. Alloy-bodied, threaded shocks in the 50–60mm range transform handling, especially on dusty dirt or off-camber jumps. Swapping to 250cst oil fixes the pogo-stick bounce from thin stock oil. And if you regularly run in the wet, consider rubber-sealed bearingsthey keep grit out and extend drivetrain life by 2–3x over open stock bearings.
→ LiPo Balance Charger, Cuts charge time down to 40 minutes, balances your cells, and keeps your packs (and ESC) from dying early. Essential for any serious basher.
→ 6S LiPo Battery, While 6S is overkill for the Grom, a high-quality 2S or 3S from reputable brands lasts longer and delivers consistent power. Don’t cheap out here if you value your ESC.
Servo Savers, Metal Servo Upgrades & Why They Matter
Servo savers absorb shocks from impacts, protecting your steering servo gears from stripping. On both Grom models, the stock plastic servo saver barely lasts a dozen hard sessions. Upgrading to an adjustable aluminum servo saver, preferably one with a steel spring and easy-access tension dial, makes a real difference in steering response and part longevity.
We’ve burned through at least four stock servo savers on the Mini Kraton in the last year. After installing a metal gear micro servo (9g size, 3.5kg-cm torque), the only weak link left is the saver itself. If you’re a street or lot basher, you might get by with a stiffer plastic unit. But if you love jumps or rough trails, don’t wait for the first stripswap it early.
Metal gear servos aren’t just about strength; they also add precision. Compared to the factory unit’s 0.18sec/60° transit time at 6V, our favorite 12g metal gear servo clocks in at 0.12sec/60°, making quick steering corrections possible on tight slaloms and 180s. Plus, ball bearings reduce backlash, which means more consistent turn-in lap after lap.
Installation is simple: remove the stock servo, install your metal gear model, then fit an alloy or high-tension servo saver. Most direct-replacement servos use a 3-wire JR plug, identical to the stock harness. Don’t forget to adjust EPA (end point adjustment) on your transmitter to avoid overdriving the servooverextension is the #1 reason even upgraded servos fail in these cars.
→ Metal Gear Servo, The single most effective upgrade for Grom steering, with durability and precision that blows away the stock unit for just a few bucks.
LED Light Kits: Bashing After Dark
LED light kits add both style and serious function to your Typhon Grom or Mini Kraton. Most of us started with simple stick-on strips, but the best setups now use waterproof, plug-and-play bars or pods that mount directly to the bumpers or roofline. Kits under 15g barely affect handling and let you see your car in low light or even total darkness.
For the Typhon Grom, a slim bar mounted above the front bumper, routed through the body holes, gives a clean look and wide beam. On the Mini Kraton, we prefer dual pod lights: one on each side of the bull bar, plus a red LED at the rear. This helps keep orientation clear at a distance, especially for younger drivers or groups running multiple cars at once.
Installation is easy. Most 5V kits use a standard receiver plug, so you don’t need to solder or tap into the ESC. Route wires away from suspension arms and drivetrain to avoid snags. For added durability, hot glue the LED boards to the bumper and use zip ties for cable management. We’ve bashed these setups through mud, rain, and even shallow puddles with no failures so far.
Tuning your LEDs for brightness pays off. Cheap kits can draw too much current, dimming when steering or throttle spikes. Stick to 0.3–0.5A draw per kit, and avoid running more than three bars to prevent brownouts. For extended night sessions, bring a backup battery or power bankthey drain a 2S pack a bit faster (1–2 minutes less runtime per 1000mAh pack).
Who Should Upgrade? Buying Guide 2026
If you run your Grom mostly on pavement or short grass, a metal gear servo and LED kit will cover 90% of your upgrade needs. These two mods address weak steering and visibility, making your car more fun and reliable in every session.
For dirt, jumps, or rough local parks, add a reinforced servo saver and upgrade your shocks to oil-filled alloy units. This combo saves you from busted steering on every hard landing and lets you clear curbs or roots without bottoming out. We recommend this for anyone who wants to push their Grom’s limits or run in group bash sessions.
If you’re running 2S LiPos regularly, invest in a quality balance charger and stick to name-brand packs. This prevents early ESC burnout and keeps your runtime consistent month after month. For those looking to add more power, only upgrade to higher KV motors or bigger packs if you’re willing to replace driveshafts, gears, and bearings frequentlyotherwise, stick to minor gearing tweaks.
Parents buying for kids: focus on durabilitymetal gear servos, servo savers, and shock upgrades give you the best chance at a car that survives more than a few weekends. Avoid high-discharge packs and aftermarket motors unless you want to spend every Saturday swapping broken parts.
For seasoned bashers who’ve already upgraded bigger ARRMA rigs (like the Kraton 6S or Outkast 6S), you’ll recognize the same upgrade pattern: fix weak steering, reinforce the drive, and add visibility. The same logic applies to the Grom series, just scaled down. If you’re coming from 1/8 or 1/10 ARRMA cars, you’ll appreciate how cheap and quick these mods can be.
Frequently Asked Questions
What is the first upgrade I should do on my Typhon Grom?
Immediately replace the stock plastic servo with a metal gear servo rated at least 2.5kg-cm torque. This upgrade gives you sharper steering, prevents stripped gears, and is the most noticeable improvement for both new and experienced bashers.
How much runtime do upgraded LiPo batteries provide?
With a 2S 1300mAh LiPo, expect 12–15 minutes of hard driving per charge on both Typhon Grom and Mini Kraton. Cold weather, high-draw LEDs, and constant full-throttle runs can reduce this by a few minutes per pack.
Are alloy shocks necessary if I only drive on pavement?
If you stay on pavement and avoid big jumps, the stock plastic shocks will be adequate for most drivers. Upgrade to alloy shocks only if you notice leaking, broken ends, or want more tunable damping for skate park or dirt use.
Can I use 3S or 6S batteries in the Typhon Grom or Mini Kraton?
No, the stock electronics are rated for 2S LiPo only (max 8.4V). Installing a 3S or 6S pack will quickly burn out the ESC and motor. For more speed, upgrade gearing or switch to a higher-KV motor, but stay within safe voltage limits.
How do I install an LED light kit on my Grom?
Most LED kits plug into the receiver’s AUX port. Mount the lights to bumpers or body, route wires away from moving parts, and secure with zip ties or hot glue. Power is drawn from the main battery, so check compatibility and current draw to avoid brownouts.
What servo saver upgrade fits the Grom chassis?
Look for 1/18-compatible aluminum servo savers with adjustable tension. Brands that make units for WLToys 144001 or LC Racing EMB1 usually fit with minor modification. Test fit before final install and set tension snug but not locked.
Will metal gear upgrades add weight or slow my car?
Metal gear servos and alloy shocks add about 10–15 grams total. This small weight increase is offset by huge gains in durability and steering accuracy, and will not noticeably slow your Grom in real-world bashing or racing.
Final Verdict
Upgrading your ARRMA Grom is the easiest way to turn a fun starter car into a tough, fast, and unique mini basher. After dozens of packs and too many cracked servos to count, the single most important upgrade is a metal gear servo. It transforms steering, prevents breakdowns, and lets you drive with confidence in any terrain.
If you’re aiming for reliability, add a direct-fit aluminum servo saver and swap to oil-filled alloy shocks. These mods are cheap, easy, and save you time and money in the long run. For bashing after dark, a 5V LED kit is a no-brainersuddenly, every parking lot or dirt trail becomes your track. Just make sure your battery and charger setup is up to the task, or you’ll spend more time waiting than driving.
Between the Typhon Grom and Mini Kraton, upgrade priorities depend on your style. The Typhon Grom benefits most from servo and light mods, while the Mini Kraton needs a tougher servo saver and shock setup for real off-road action. Both cars respond well to smart battery choices and careful gearing tweaks. Skip the flashy cosmetic mods and spend your budget on the parts that actually keep you bashing longer, harder, and with fewer repairs.
For 2026, these are the ARRMA Grom upgrades that actually make your car betterproven by real use, not just specs on a box. Whether you’re a first-timer or a seasoned basher, these mods will keep your Grom at the front of the pack and on the track for years to come.
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