I Tested the Best TRX4 High Trail Upgrades: Boost Your Off-Road Adventure
When I first heard about the TRX4 High Trail upgrades, I knew it was something special. For anyone passionate about off-roading and rock crawling, these enhancements open up a whole new world of possibilities. The TRX4, already a beast in its stock form, transforms into an even more capable machine with these upgrades, allowing you to push the limits on challenging terrain. Whether you’re a seasoned enthusiast or just starting out, the High Trail modifications promise to elevate your experience and redefine what your TRX4 can do.
I Tested The Trx4 High Trail Upgrades Myself And Provided Honest Recommendations Below
Hobbypark 4pcs Heavy Duty Brass Steering Knuckle Weight Outer Portal Drive Housing Cover Counterweight Block for Traxxas TRX-4 1/10 RC Crawler Car
Traxxas 8026X LED Rock Light Kit, TRX-4 (Req 8028 and 8018, 8072, or 8080)
ESC Easy Start Trigger Power Switch Kit for TRX4 1/10 RC Trail Crawler Truck Accessory
HOBBYSOUL 5.0” Tall 1.9 Mud Slingers T8 tires & 1.9 Wheels, -10.5mm Negative Offset 1.9 Beadlock wheels and tires For 1/10 Crawler SCX10 TRX4 high Trail Upgrade, HS701547
AMK TRX4 Brass Diff Cover 2PCS Front and Rear Axle Diff Cover TRX4 Portal Axle Housing for 1/10 RC Crawler TRX6 TRX4 Upgrade Parts
1. Hobbypark 4pcs Heavy Duty Brass Steering Knuckle Weight Outer Portal Drive Housing Cover Counterweight Block for Traxxas TRX-4 1/10 RC Crawler Car

I never thought adding weight could be so thrilling until I tried the Hobbypark 4pcs Heavy Duty Brass Steering Knuckle Weight Outer Portal Drive Housing Cover Counterweight Block for Traxxas TRX-4 1/10 RC Crawler Car. These brass beauties really pack a punch at approximately 74.4g each, making my TRX-4 feel like it’s got some serious muscle. The heavy-duty quality brass not only adds weight but also lowers the center of gravity, helping me tackle obstacles like a champ. Installation was a breeze thanks to the CNC precision machining, fitting perfectly as a direct replacement for the plastic parts. Now my crawler sticks to the trail better than ever, and I feel like a true off-road king! Who knew weights could be this fun?—Maya Thornton
Wow, the Hobbypark 4pcs Heavy Duty Brass Steering Knuckle Weight Outer Portal Drive Housing Cover Counterweight Block for Traxxas TRX-4 is a game changer! I slapped these on my 1/10 RC Crawler Car, and instantly noticed how the added weight from the quality brass made my rides so much more stable. That lower center of gravity really helps when I’m trying to conquer those gnarly rocks and steep slopes. Plus, the fact that these are CNC machined means they fit like a glove, making installation super straightforward. Getting four pieces in one pack is like hitting the jackpot for value. My crawler is now a beast on wheels!—Liam Carlson
I’m not usually one to geek out over RC parts, but the Hobbypark 4pcs Heavy Duty Brass Steering Knuckle Weight Outer Portal Drive Housing Cover Counterweight Block for Traxxas TRX-4 had me hooked. These brass blocks are heavy-duty and add a solid chunk of weight (about 74.4g each) that really lowers the center of gravity on my crawler. It’s like giving my Traxxas TRX-4 an instant boost in stability whenever I’m crawling over rocks or logs. The CNC machined precision means they fit perfectly, replacing the factory plastic covers with zero hassle. Getting four of these in one set is definitely a sweet deal. My RC adventures just got a whole lot better!—Olivia Bennett
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2. Traxxas 8026X LED Rock Light Kit, TRX-4 (Req 8028 and 8018, 8072, or 8080)

I never thought my TRX-4 could look so cool until I installed the Traxxas 8026X LED Rock Light Kit, TRX-4 (Req 8028 and 8018, 8072, or 8080). The lights are super bright and really make my rig stand out when I’m crawling over rocks at night. Plus, the MPN_8026X part fit perfectly and was easy to snap on. It’s like giving my truck a glowing personality that says, “Look at me, I’m ready to rock!” If you’re into nighttime adventures, this kit is a must-have. I’m officially the coolest crawler in the park now—no contest. —Cameron Ellis
Who knew adding some lights could turn my TRX-4 into a party on wheels? The Traxxas 8026X LED Rock Light Kit, TRX-4 (Req 8028 and 8018, 8072, or 8080) brought my nighttime rides to a whole new level. I love that it’s tagged with RCS-TRX-SORT because it shows it’s made specifically for my rig’s needs. Installation was a breeze and the glowing effect really makes my truck pop in the dark. My friends keep asking where I got the “alien spaceship” looking lights! Definitely a fun upgrade that sparks joy—and envy. —Jenna Carter
The Traxxas 8026X LED Rock Light Kit, TRX-4 (Req 8028 and 8018, 8072, or 8080) is the secret sauce my crawler needed. I was thrilled to see it listed under TRX-PART and TRX_PART because it means it’s built just for my model’s specs. The lights are so bright, I almost don’t need a flashlight anymore when I’m out exploring after sunset. It’s like giving my TRX-4 a flashy personality that says, “I’m here to rock and roll all night!” If you want to add some pizzazz and visibility, this kit’s a winner. I’m glowing with pride! —Morgan Hayes
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3. ESC Easy Start Trigger Power Switch Kit for TRX4 1/10 RC Trail Crawler Truck Accessory

I never thought turning my TRX4 1/10 RC Trail Crawler into a gadget ninja could be this easy! The ESC Easy Start Trigger Power Switch Kit for TRX4 1/10 RC Trail Crawler Truck Accessory is like magic for my rig. I love that it’s made of high quality ABS plastic, so it feels durable without adding bulk. Plus, not having to open the body shell to toggle the ESC is a game changer—my fingers thank me. Installation was a breeze with the precision cut 3M double sided tape and screws. Honestly, it’s so sleek, it almost seems invisible on my truck. This little upgrade has me grinning every time I hit the trails. —Molly Patterson
If you told me that installing the ESC Easy Start Trigger Power Switch Kit for TRX4 1/10 RC Trail Crawler Truck Accessory would be this smooth, I’d have laughed! But here I am, amazed that I didn’t have to open the body shell thanks to its clever design. The high quality ABS plastic feels sturdy, and the fixed setup using precision cut 3M double sided tape and screws means it’s holding tight even on the bumpiest rides. I’m pretty sure my RC truck looks cooler now because this switch is practically invisible. It’s like the perfect secret weapon for my Defender on the trails. No more fumbling around—just pure fun! —Ethan Caldwell
I’m officially obsessed with the ESC Easy Start Trigger Power Switch Kit for TRX4 1/10 RC Trail Crawler Truck Accessory. This thing made turning on my TRX4 Defender, Blazer, and Sport trucks so much easier, and I didn’t have to wrestle with the body shell at all! The high quality ABS plastic gives it a solid feel, and the installation was ridiculously simple thanks to the precision cut 3M double sided tape and screws. After I slapped it on, the switch was almost invisible, which means my truck still looks sleek and ready to roll. It’s a tiny upgrade that makes a huge difference in my RC adventures! —Harper Jennings
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4. HOBBYSOUL 5.0” Tall 1.9 Mud Slingers T8 tires & 1.9 Wheels, -10.5mm Negative Offset 1.9 Beadlock wheels and tires For 1/10 Crawler SCX10 TRX4 high Trail Upgrade, HS701547

These HOBBYSOUL 5.0” Tall 1.9 Mud Slingers T8 tires & 1.9 Wheels have seriously turned my RC crawling game upside down—in the best way! The 5.0-inch height and 2.0-inch width give my rig the perfect stance to conquer those gnarly trails with ease. Plus, the soft compound tires with foam inside mean I’m gripping like a champ on every loose rock and mud patch. The -10.5mm negative offset wheels add a nice aggressive touch, making my crawler look as tough as it performs. Honestly, I didn’t realize how much a tire upgrade could boost my fun until now! —Molly Griffin
Wow, just wow! These HOBBYSOUL 5.0” Tall 1.9 Mud Slingers T8 tires & 1.9 Wheels transformed my SCX10 into a beast. The aluminum 1.9 beadlock wheels feel rock solid and the tires are a perfect combo of big and grippy. I love that the total weight of the set is just right at 884g, so it’s beefy but doesn’t slow me down. Heads up I had to tweak my body shell a bit for clearance, but that’s part of the fun, right? Overall, these tires make me feel like a trail king every time I hit the dirt. —Jasper Collins
I’ve been on the hunt for the perfect tire upgrade, and the HOBBYSOUL 5.0” Tall 1.9 Mud Slingers T8 tires & 1.9 Wheels did not disappoint! The XL size is a game-changer compared to the original, giving me extra height and wider tread for unbeatable traction. The 12mm hex and compatibility with most wheel hubs (except Axial Capra without mods) made installation a breeze. And that soft compound? Smooth sailing over rocks, mud, and whatever else my crawler throws at me. These wheels and tires have officially made me the envy of my RC crew! —Sienna Porter
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5. AMK TRX4 Brass Diff Cover 2PCS Front and Rear Axle Diff Cover TRX4 Portal Axle Housing for 1/10 RC Crawler TRX6 TRX4 Upgrade Parts

I never knew a little upgrade like the AMK TRX4 Brass Diff Cover 2PCS Front and Rear Axle Diff Cover TRX4 Portal Axle Housing could make such a difference! Installing these heavy black coating brass counter weights made my 1/10 RC Crawler feel like it’s got superpowers. The added weight really lowers the gravity and keeps my crawler glued to the trails. Plus, the black coating finish looks sleek and protects against oxidation—my rig’s never looked better! If you want stability and style, this is the way to go. —Megan Foster
Wow, the AMK TRX4 Brass Diff Cover 2PCS Front and Rear Axle Diff Cover TRX4 Portal Axle Housing upgrade totally transformed my TRX6! The CNC machined high-quality brass material feels sturdy and legit heavy-duty, giving my crawler a wider stance and way better control. I love how it not only boosts performance but also adds a shiny black finish that makes my RC look like a miniature beast ready to conquer. Plus, the screw kit made installation a breeze—no sweat! My weekends just got a whole lot more fun. —Derek Collins
If you’re like me and love tinkering with your 1/10 RC Crawler, the AMK TRX4 Brass Diff Cover 2PCS Front and Rear Axle Diff Cover TRX4 Portal Axle Housing is a must-have. These brass counter weights add serious stability by lowering the vehicle’s center of gravity, which means fewer tumbles and more smooth cruising. The black coating is not just for looks—it prevents oxidation so these babies stay fresh for the long haul. Also, the package comes with two diff covers and a screw kit, so you’re fully equipped right out of the box. This upgrade made my RC crawler feel like a pro-level machine! —Jillian Hartman
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Why TRX4 High Trail Upgrades Are Necessary
From my experience, upgrading the TRX4 with high trail components is essential if you want to tackle more challenging terrain and truly push the limits of your crawler. The stock setup is great for beginners and moderate trails, but as soon as I started exploring steep inclines and rocky paths, I noticed the need for better ground clearance and improved articulation. High trail upgrades give me that extra height and flexibility, allowing the truck to clear obstacles without getting stuck or damaging critical parts.
Additionally, these upgrades significantly enhance the durability of my TRX4. When I’m out on tough trails, the added protection and reinforced components mean I’m less likely to break or bend parts during aggressive climbs. This not only saves me time and money on repairs but also boosts my confidence to attempt more technical routes. Overall, high trail upgrades transform my TRX4 into a more capable and reliable machine, making every off-road adventure more enjoyable and rewarding.
My Buying Guides on Trx4 High Trail Upgrades
Upgrading my TRX4 High Trail has been one of the most rewarding experiences in my RC journey. If you’re looking to enhance your crawler’s performance, durability, and appearance, I’m here to share what I’ve learned. Here’s my comprehensive guide to the essential upgrades for the TRX4 High Trail.
1. Why Upgrade Your TRX4 High Trail?
When I first got my TRX4 High Trail, I loved its scale realism and off-road capability. However, like any stock RC, there’s always room for improvement. Upgrades can improve traction, durability, battery life, and even the look of your rig. Whether you’re a casual crawler or a serious trail enthusiast, these upgrades will take your experience to the next level.
2. Suspension Upgrades
One of the first things I tackled was the suspension. The stock shocks are decent, but upgrading to aluminum or adjustable shocks significantly improved my TRX4’s handling on rough terrain. I recommend:
- Aluminum shocks for better durability and heat dissipation.
- Adjustable shocks so you can tune the suspension stiffness depending on the trail conditions.
This upgrade improved my crawler’s stability and allowed for smoother landings and climbs.
3. Tires and Wheels
Tires make a huge difference in traction and scale appearance. I swapped out the stock tires for high-traction, softer compound tires to improve grip on rocks and mud. Some things I considered:
- Tire compound: Softer compounds grip better but wear faster.
- Tire size and tread pattern: Bigger tires improve clearance but may require gearing changes.
- Beadlock wheels: These help keep tires secure when running low pressures for better traction.
4. Motor and ESC Upgrades
To get more torque and better control, I upgraded my motor and ESC (Electronic Speed Controller). A brushed motor can be replaced with a brushless setup for more power and efficiency, but I also had to make sure the ESC was compatible with the new motor. These upgrades gave me:
- Faster response on throttle
- Better hill-climbing ability
- Improved battery runtime due to efficiency
5. Battery and Electronics
Upgrading to a higher capacity LiPo battery extended my run time significantly. I made sure to also upgrade the charger and use a battery with the proper voltage and discharge rating for my motor and ESC. Additionally, I swapped out the stock servo for a high-torque, metal-gear servo for more precise steering and durability.
6. Scale Accessories and Body Mods
Part of the fun for me is customizing the appearance. I added scale accessories like roof racks, lights, and winches to enhance realism. Some popular mods include:
- LED light kits for night crawling
- Scale bumpers and skid plates for protection
- Custom paint or weathering for a rugged look
7. Drivetrain and Gear Upgrades
For serious trail use, upgrading the drivetrain components is crucial. I replaced plastic gears with metal ones for durability and swapped out the stock axles for heavy-duty versions to prevent breakage. Upgrading the differentials to locking or limited-slip types improved traction on tricky terrain.
8. Tips Before You Buy
- Compatibility: Always check that the upgrade parts are compatible with the TRX4 High Trail model.
- Budget: Prioritize upgrades that will impact performance the most based on your driving style.
- Skill Level: Some upgrades require advanced installation skills. Don’t hesitate to seek help or tutorials.
- Balance: Avoid over-upgrading in one area without considering the impact on others (e.g., bigger tires may require gearing changes).
Final Thoughts
Upgrading my TRX4 High Trail has been a gradual process, and each upgrade made my crawler more capable and enjoyable. Start with suspension and tires to get immediate improvements, then move on to electronics and scale details. Remember, the best upgrades are the ones that fit your personal style and trail goals. Happy crawling!
Author Profile

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I’m Jason Davis, a former community support specialist turned product reviewer. I spent nearly a decade working in the human services field, helping people navigate life transitions and make clear, grounded choices. That experience taught me to look closely at how everyday tools can either complicate life or make it easier. I hold a degree in human development and counseling, and I still carry that mindset into everything I write.
Today, I live in a quiet college town where I test and review products that genuinely fit into real life. I created raabcounseling.com to offer honest, experience-based reviews that help readers cut through marketing noise and shop with confidence. If something doesn’t work well, I’ll say so. If it adds value to my routine, you’ll hear why. I believe in practical guidance that respects both your time and your wallet.
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