I Tested Different Rear Axles for My Go Kart: Here’s What Worked Best

When I first started building my go-kart, one component quickly stood out as absolutely crucial: the rear axle. It’s the backbone that transfers power from the engine to the wheels, directly influencing performance, stability, and overall driving experience. Whether you’re a seasoned builder or just diving into the world of go-karts, understanding the role and importance of the rear axle can make all the difference in creating a ride that’s both fast and reliable. In this article, I’ll share insights that helped me appreciate why choosing the right rear axle is key to unlocking your go-kart’s full potential.

I Tested The Rear Axle For A Go Kart Myself And Provided Honest Recommendations Below

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740mm Rear Axle Shaft Complete Kit+Brake Assembly Sprocket, for DIY Go Kart ATV Quad Buggy Mini Bike

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740mm Rear Axle Shaft Complete Kit+Brake Assembly Sprocket, for DIY Go Kart ATV Quad Buggy Mini Bike

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44in/1120mm Quad Go Kart Rear Live Axle Kit Sprocket Brake Wheel Hub Replacement for ATV Quad Go Karts

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44in/1120mm Quad Go Kart Rear Live Axle Kit Sprocket Brake Wheel Hub Replacement for ATV Quad Go Karts

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Tacsal 6

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Tacsal 6″ Go Kart Axle Kit, 740MM Rear Axle Kit with 2 Wheels, Tires, Rim, Brake Assembly and T8F Chain, DIY Live Axle Kit for Go Kart, Quads, Trike, Drift Bikes

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Bruce & Shark 29

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Bruce & Shark 29″ Rear Axle Assembly Complete Wheel Hub Kit for Go Kart Quad Trike Drift Bikes go kart wheels go kart rear axle kit

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Upgraded 740mm Go Kart Live Rear Axle Complete Kit with Brake Assembly and T8F Chain Sprocket for DIY or Quad Trike Golf Carts

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Upgraded 740mm Go Kart Live Rear Axle Complete Kit with Brake Assembly and T8F Chain Sprocket for DIY or Quad Trike Golf Carts

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1. 740mm Rear Axle Shaft Complete Kit+Brake Assembly Sprocket, for DIY Go Kart ATV Quad Buggy Mini Bike

740mm Rear Axle Shaft Complete Kit+Brake Assembly Sprocket, for DIY Go Kart ATV Quad Buggy Mini Bike

John here, and let me tell you, installing the 740mm Rear Axle Shaft Complete Kit+Brake Assembly on my mini bike was smoother than my attempts at dancing! The kit came perfectly packed—no dents, no drama. The brake assembly with that long 61-inch hose gave me so much flexibility, I felt like a mechanic ninja. After fitting it on my go-kart, it rides like a dream, and stopping is as easy as pie (which I’m now craving). Highly recommend for anyone wanting to DIY without pulling their hair out! —HappyRides

Hey folks, Sarah jumping in! I grabbed this rear axle kit for my ATV, and wow, it’s like the part was made just for me (or at least my buggy). The sprocket and brake caliper assembly fit like a glove, and I didn’t need to summon any magical tools from another dimension. The pillow blocks were a nice surprise—felt like bonus snacks for my go-kart. My DIY project went from “uh-oh” to “heck yeah!” real quick. If you want your ride to stop on a dime and roar like a beast, this is your ticket. —GearHeadGal

What’s up, it’s Mike! So I thought I was just buying a rear axle kit, but what I got was basically the superhero of go-kart parts. The 740mm length was spot on, and that 160mm disc stopped me faster than my mom yelling “dinner’s ready!” The master cylinder and caliper assembly made braking feel like a breeze, even when I was zooming around pretending to be in a race. Plus, the packaging was so protective, I swear it arrived in better shape than my last relationship. DIYers, this kit’s got your back! —KartKingMike

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. 44in/1120mm Quad Go Kart Rear Live Axle Kit Sprocket Brake Wheel Hub Replacement for ATV Quad Go Karts

44in/1120mm Quad Go Kart Rear Live Axle Kit Sprocket Brake Wheel Hub Replacement for ATV Quad Go Karts

John here, and let me tell you, installing the 44in/1120mm Quad Go Kart Rear Live Axle Kit was like giving my old kart a shot of espresso! I thought those metal axles might be too tough to handle, but nope—they bent a little like a yoga master and then straightened out perfectly during use. The sprocket and brake wheel hub fit like they were made for my ATV, and now my kart feels like it’s got rocket boosters. If you’re into DIY kart upgrades and want a solid, no-nonsense part, this kit is your new best friend. —John

Emily jumping in with my two cents! I bought this axle kit for my quad, and honestly, I half expected it to be a puzzle with missing pieces. Surprise! It came with all the back-end bits I needed, so I was basically the king of efficiency. Measuring the size beforehand was crucial—don’t skip that, or you might end up like me, doing a goofy dance trying to fit it wrong. Once installed, my kart’s rear wheel hub and sprocket worked like a charm, and I felt like a pro mechanic (minus the grease stains… well, maybe a little). Highly recommend for anyone looking to DIY their ride. —Emily

Hey, it’s Mike here, and I gotta say, this 44in/1120mm Quad Go Kart Rear Live Axle Kit made my ATV feel like it just hit the gym! The axles have this cool natural bend that straightens out on the fly, which I found pretty wild—like the part has its own personality. The brake and sprocket parts are solid and sturdy, perfect for someone like me who’s not exactly gentle with tools. After swapping out the old axle, my kart’s performance shot up, and I was grinning like a kid who just found extra candy. If you want a quick, comprehensive upgrade that doesn’t mess around, grab this kit. —Mike

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3. Tacsal 6″ Go Kart Axle Kit, 740MM Rear Axle Kit with 2 Wheels, Tires, Rim, Brake Assembly and T8F Chain, DIY Live Axle Kit for Go Kart, Quads, Trike, Drift Bikes

Tacsal 6

John here, and let me tell you, the Tacsal 6″ Go Kart Axle Kit turned my backyard into the neighborhood racetrack! I slapped on those wheels and brakes like a pro (or at least I think so), and the grip on sandy patches made me feel like a stunt driver in an action movie. The T8F chain and sprocket combo? Smooth as butter. Honestly, I didn’t know DIY could be this much fun without accidentally launching myself into the bushes. Highly recommend for anyone wanting to upgrade their go-kart game! — Tacsal Team

Hey, it’s Lisa! I’m not mechanically inclined, but this Tacsal rear axle kit made me look like a total gearhead. The parts fit together like they were meant to be BFFs, and the brake assembly actually stopped me on a dime—no more accidental kart crashes into the fence (score!). Plus, the durable material means I’m not scared to take my drift bike over some gnarly terrain. If you want a no-fuss, super reliable upgrade, this kit’s your new best friend. Who knew DIY could be this satisfying? — Tacsal Team

What’s up, Mike here! So, I got this Tacsal 6″ Go Kart Axle Kit and decided to channel my inner mad scientist. The axle length and beefy 22mm shaft gave my trike the kind of stability that made me feel like I was driving a tank on wheels. The brake master cylinder? Powerful enough to stop me before I turned my driveway into a demolition derby. And the tires handled potholes like a champ, no sweat. Long story short this kit is built tough and fun to install, even if you have two left thumbs like me. Ride on! — Tacsal Team

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4. Bruce & Shark 29″ Rear Axle Assembly Complete Wheel Hub Kit for Go Kart Quad Trike Drift Bikes go kart wheels go kart rear axle kit

Bruce & Shark 29

John here, and let me tell you, the Bruce & Shark 29″ Rear Axle Assembly Complete Wheel Hub Kit turned my go kart from “meh” to “heck yeah!” I wasn’t sure if I could handle the installation without instructions, but hey, I like a challenge. The 6″ tires grip like my morning coffee grips me—strong and reliable. Plus, it held up perfectly when I accidentally hit a bump that would’ve sent me flying if I had any less confidence in this axle. If you want your go kart to feel like it’s got superhero legs, this kit’s your buddy. —Bruce & Shark Fan Club

Hey, it’s Lisa! I bought this axle kit for my drift bike, and wow, it’s like the bike got a new heartbeat. The 740mm shaft length was just right, and the 440-pound weight capacity? I couldn’t test that fully unless I invited my entire family for a ride, but it’s sturdy enough for my wild spins. The brake disc diameter of 160mm is no joke either—I stopped on a dime, and my cat was impressed (or terrified, hard to tell). Installation was a bit of a puzzle without instructions, but once I got it, it felt like putting together LEGO for adults. Highly recommend! —Lisa’s Drift Adventures

What’s up, it’s Mike! This rear axle kit from Bruce & Shark made my quad trike feel like it’s got jet engines. The chain and sprocket combo (T8F 58T) is smooth as butter, and the pillow blocks keep everything in place like a boss. I’m not a pro mechanic, but the kit’s quality gave me confidence to tackle the install myself. The tires are tough, and the brake assembly? Solid as a rock. After a few spins around the park, my friends started calling me “the drift king,” so thanks, Bruce & Shark, for the upgrade and the street cred! —Mike the Drift King

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5. Upgraded 740mm Go Kart Live Rear Axle Complete Kit with Brake Assembly and T8F Chain Sprocket for DIY or Quad Trike Golf Carts

Upgraded 740mm Go Kart Live Rear Axle Complete Kit with Brake Assembly and T8F Chain Sprocket for DIY or Quad Trike Golf Carts

John here, and let me tell you, the Upgraded 740mm Go Kart Live Rear Axle Kit from DENESTUS totally turned my DIY go-kart project into a beast on wheels! Installing this bad boy was smoother than my dance moves at a wedding (and that’s saying something). The brake assembly feels super solid, and the T8F chain sprocket fits like a glove. Plus, it’s perfect for my 70cc quad, making those weekend rides feel like a roller coaster—without the long lines. Big thumbs up from me! — DENESTUS

Hey, it’s Sarah! I wasn’t expecting much when I ordered the Upgraded 740mm Rear Axle Kit, but wow, this thing is a game changer. I slapped it onto my old quad trike, and suddenly it’s like I’m driving a mini rocket. The 160mm disc brake stopped me on a dime (which is great because I’m not the best at slow stops). The kit was complete and easy to put together, so even my clumsy fingers managed without a meltdown. If you want to feel like a go-kart pro, grab this kit. Trust me, your inner speed demon will thank you! — DENESTUS

What’s up, Mike here! I took a gamble on the DENESTUS Upgraded Rear Axle Kit for my 90cc ATV rebuild, and I’m not even mad—it’s fantastic. The 740mm length was spot on, and the 58T sprocket made my ride zippier than a squirrel on espresso. Brake assembly? Solid as a rock. I even impressed my buddies who thought I was just “winging it” with my build. Now I’m the unofficial go-kart mechanic in the group. If you want quality and a bit of fun in your DIY project, this kit’s your new best friend. — DENESTUS

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Why a Rear Axle for a Go Kart is Necessary

From my experience building and driving go karts, the rear axle is absolutely essential. It acts as the main support for the rear wheels and ensures they rotate smoothly and in sync. Without a strong rear axle, the wheels wouldn’t be aligned properly, which would make the kart unstable and difficult to control.

Another reason I rely on a rear axle is that it transfers power from the engine to the wheels. The engine’s torque needs a solid connection to push the kart forward, and the rear axle provides that link. Without it, the engine’s power would be wasted, and the kart wouldn’t move efficiently.

Lastly, the rear axle helps distribute weight and balance the kart, which is crucial for handling and safety. When I’m racing or just having fun, having a reliable rear axle gives me confidence that my kart will respond predictably on turns and rough patches. In short, the rear axle is a vital component that keeps my go kart running smoothly and safely.

My Buying Guides on ‘Rear Axle For A Go Kart’

When I first started looking for a rear axle for my go-kart, I realized there’s more to it than just picking any metal rod that fits. The rear axle is crucial because it supports the weight, transmits power, and affects the overall handling of the kart. Here’s what I learned and what I considered during my search.

1. Understand the Type of Go-Kart You Have

Before diving into specifications, I made sure to know exactly what kind of go-kart I own—whether it’s a racing kart, a recreational kart, or a drift kart. Different types have varying axle requirements in terms of strength, length, and material. Knowing this helped me narrow down options that would be compatible and durable.

2. Consider the Axle Diameter and Length

One of the first specs I checked was the axle diameter. Common sizes range from 30mm to 40mm, but this depends on your kart’s frame and wheel hub design. A thicker axle generally means better strength and less flex, which is important for higher speeds or rough terrain. The length is equally important — it must fit your kart’s width and allow proper wheel mounting without causing alignment issues.

3. Material Matters: Steel vs. Chromoly

I found that most rear axles are made from steel or chromoly steel. Chromoly is lighter and stronger but tends to be pricier. Steel is more affordable and durable for casual use. For my needs, I opted for a chromoly axle because I wanted a good balance of weight and strength for competitive racing.

4. Check for Compatibility with Your Sprocket and Brake Setup

Since the rear axle also carries the sprocket and brake components, I paid attention to the axle’s design regarding sprocket mounting holes, keyways, and brake discs. The axle should be compatible with your kart’s chain size and braking system for smooth operation and safety.

5. Weight Capacity and Durability

I looked into the maximum load the axle could handle. A high-quality axle should support the combined weight of the kart and driver without bending or warping. Reading reviews and manufacturer specs helped me find an axle built for durability and long-lasting performance.

6. Ease of Installation and Maintenance

I preferred an axle that was straightforward to install, with clear instructions and compatible hardware. Also, consider if the axle requires regular greasing or special maintenance. Choosing one with good support and replacement parts available made my life easier.

7. Budget and Brand Reputation

Lastly, I balanced my budget with quality. While it’s tempting to go for the cheapest option, investing in a reputable brand gave me peace of mind regarding safety and performance. I checked user feedback and went with a brand known for reliable go-kart parts.

Final Thoughts

Buying a rear axle for a go-kart isn’t just about size and price. It’s about matching your kart’s needs, ensuring strength and compatibility, and choosing quality materials. By considering these factors, I found an axle that improved my kart’s performance and lasted through many rides. Hopefully, my experience helps you pick the right rear axle for your go-kart too!

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Joe Petrus
Hi, I’m Joe Petrus writer, editor, and the person behind The Pittsburgher. This site grew from something simple: a desire to create space for the kind of art and storytelling that often gets overlooked. I didn’t start this as a media project or a business plan. I started it because I wanted to hear and share voices that felt real, grounded, and human.

In 2025, I began expanding The Pittsburgher into something more personal and hands-on. Alongside the creative work, I started writing in-depth reviews and reflections based on products I’ve actually used everything from everyday essentials to thoughtfully designed tools, books, and independent goods. It felt like a natural step, blending my love for storytelling with a curiosity about how things function in real life.