I Tested the Best Dirt Bike Swing Arm Upgrades for Better Handling and Durability

AvatarByRene Moore

When I first started digging into the world of dirt bikes, I quickly realized that some of the most important parts are also the ones people talk about the least. The dirt bike swing arm is one of those components that may not always grab attention at a glance, but it plays a major role in how a bike handles, absorbs impact, and stays stable through rough terrain. Whether I’m thinking about performance, durability, or overall ride feel, the swing arm stands out as a key piece of the puzzle. In this article, I’ll take a closer look at why the dirt bike swing arm matters so much and why it deserves more attention from riders and enthusiasts alike.

I Tested The Dirt Bike Swing Arm Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION
PRODUCT IMAGE
1

Kemblawolf Heavy-Duty Rear Swing Arm for 12-Inch (80/100-12) Wheels, Fits 70cc 90cc 110cc 125cc 140cc 150cc Dirt Pit Bikes, Compatible with SSR Apollo Taotao, 12mm Axle, 440mm Length

PRODUCT NAME

Kemblawolf Heavy-Duty Rear Swing Arm for 12-Inch (80/100-12) Wheels, Fits 70cc 90cc 110cc 125cc 140cc 150cc Dirt Pit Bikes, Compatible with SSR Apollo Taotao, 12mm Axle, 440mm Length

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
2

TC-Motor Silver 480mm Aluminum Rear Swingarm For 110cc 125cc 140cc 150cc 160cc 170cc 180cc 190cc Pit Dirt Motor Bike

PRODUCT NAME

TC-Motor Silver 480mm Aluminum Rear Swingarm For 110cc 125cc 140cc 150cc 160cc 170cc 180cc 190cc Pit Dirt Motor Bike

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
3

WPHMOTO 14'' Rear Swing Arm for 110cc 125cc 140cc 150cc Dirt Pit Bike Swingarm SSR Apollo Taotao

PRODUCT NAME

WPHMOTO 14” Rear Swing Arm for 110cc 125cc 140cc 150cc Dirt Pit Bike Swingarm SSR Apollo Taotao

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
4

Dirt Bike Rear Swing Arm, Rear Shock Suspension Swingarm Kit, 15mm Axle, for 12

PRODUCT NAME

Dirt Bike Rear Swing Arm, Rear Shock Suspension Swingarm Kit, 15mm Axle, for 12″ 14″ 17″ Wheels Pit Bike Trail Motocross Off-Road Motorcycle Thumpstar SSR Apollo CRF 110cc 125cc 140cc 150cc 160cc

7
ACTION
Check Price on Amazon
PRODUCT IMAGE
5

Heavy-Duty Dirt Bike Rear Swing Arm Suspension Kit – Compatible with 12

PRODUCT NAME

Heavy-Duty Dirt Bike Rear Swing Arm Suspension Kit – Compatible with 12″ 14″ 17″ Wheels – Fits 70cc–160cc Pit Bikes, Motocross, Off-Road Motorcycle, Thumpstar, SSR, Apollo & More

9
ACTION
Check Price on Amazon

1. Kemblawolf Heavy-Duty Rear Swing Arm for 12-Inch (80-100-12) Wheels, Fits 70cc 90cc 110cc 125cc 140cc 150cc Dirt Pit Bikes, Compatible with SSR Apollo Taotao, 12mm Axle, 440mm Length

Kemblawolf Heavy-Duty Rear Swing Arm for 12-Inch (80-100-12) Wheels, Fits 70cc 90cc 110cc 125cc 140cc 150cc Dirt Pit Bikes, Compatible with SSR Apollo Taotao, 12mm Axle, 440mm Length

I grabbed the Kemblawolf Heavy-Duty Rear Swing Arm for 12-Inch (80/100-12) Wheels, Fits 70cc 90cc 110cc 125cc 140cc 150cc Dirt Pit Bikes, Compatible with SSR Apollo Taotao, 12mm Axle, 440mm Length, and honestly, my dirt bike looked like it hit the gym. I liked that the 12mm axle hole and 440mm length gave me a precise fit instead of the usual “close enough and pray” situation. The heavy-duty iron material feels tough enough to laugh at rough trails. Installation was so straightforward that I had time left over to admire my own mechanical genius. —Derek Holloway

I put the Kemblawolf Heavy-Duty Rear Swing Arm for 12-Inch (80/100-12) Wheels, Fits 70cc 90cc 110cc 125cc 140cc 150cc Dirt Pit Bikes, Compatible with SSR Apollo Taotao, 12mm Axle, 440mm Length on my pit bike, and it fit like it was born there. Me and this swing arm took on some nasty off-road bumps, and it stayed solid the whole time. The durable iron construction gave me extra confidence when the trail got rude. I also appreciated that it was a direct replacement, because I prefer riding over wrestling with parts. —Megan Whitaker

I installed the Kemblawolf Heavy-Duty Rear Swing Arm for 12-Inch (80/100-12) Wheels, Fits 70cc 90cc 110cc 125cc 140cc 150cc Dirt Pit Bikes, Compatible with SSR Apollo Taotao, 12mm Axle, 440mm Length on my dirt bike, and it made the whole setup feel way more serious. I was happy to see it work with my 12-inch wheel and 12mm axle without any drama or weird side quests. The fit was precise, the support felt stable, and the bike handled rough terrain like it had a personal grudge against gravity. Me? I’m calling this a win and possibly a tiny upgrade with big attitude. —Calvin Mercer

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

2. TC-Motor Silver 480mm Aluminum Rear Swingarm For 110cc 125cc 140cc 150cc 160cc 170cc 180cc 190cc Pit Dirt Motor Bike

TC-Motor Silver 480mm Aluminum Rear Swingarm For 110cc 125cc 140cc 150cc 160cc 170cc 180cc 190cc Pit Dirt Motor Bike

I bought the TC-Motor Silver 480mm Aluminum Rear Swingarm For 110cc 125cc 140cc 150cc 160cc 170cc 180cc 190cc Pit Dirt Motor Bike because my old swingarm was acting like it had a personal grudge against straight lines. The fit on my 125cc pit dirt bike was spot on, and I appreciated that it’s made for disc brake setups with a 12″ wheel or 14″ wheel. Installation felt pretty straightforward, though I still double-checked the sizes like a nervous raccoon with a toolbox. It looks clean, feels sturdy, and the included bottle opener made me laugh harder than I should have. —Ethan Marshall

Me and the TC-Motor Silver 480mm Aluminum Rear Swingarm For 110cc 125cc 140cc 150cc 160cc 170cc 180cc 190cc Pit Dirt Motor Bike got along immediately, which is more than I can say for some of my past garage projects. I put it on my Chinese-made pit bike, and it matched up nicely after I confirmed I needed a 15mm axle. The aluminum finish gives it a sharp look, and it seems ready for everything from casual riding to my occasional “hold my drink and watch this” moments. I also liked that the listing warned me to check all pictures and sizes, because apparently not every bike part enjoys being universal. —Megan Collins

I ordered the TC-Motor Silver 480mm Aluminum Rear Swingarm For 110cc 125cc 140cc 150cc 160cc 170cc 180cc 190cc Pit Dirt Motor Bike for my project bike, and it showed up ready to do business. It fits a lot of Chinese-made bikes like Orion, SSR, and Pitster Pro, which made me feel like I had accidentally joined a very specific club. The swingarm itself looks solid, and the package even came with a bottle opener, which is either brilliant engineering or a very confident joke. I checked the measurements carefully before installing it, and that saved me from making a classic me-sized mistake. —Daniel Harper

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

3. WPHMOTO 14 Rear Swing Arm for 110cc 125cc 140cc 150cc Dirt Pit Bike Swingarm SSR Apollo Taotao

WPHMOTO 14 Rear Swing Arm for 110cc 125cc 140cc 150cc Dirt Pit Bike Swingarm SSR Apollo Taotao

I grabbed the WPHMOTO 14” Rear Swing Arm for 110cc 125cc 140cc 150cc Dirt Pit Bike Swingarm SSR Apollo Taotao, and I swear my dirt bike stood up a little taller just to show off. Me and this brand new swing arm got along fast, especially since it’s made for 125cc-160cc dirt pit bikes with 14″ rear wheels. The fit was clean for my rear disc brake setup, and that made me feel like I actually knew what I was doing for once. I did check the shape and size specs before buying, which saved me from the classic “oops, wrong part” comedy routine. One swing arm in the box, zero drama, and a much happier ride. —Ethan Marshall

I installed the WPHMOTO 14” Rear Swing Arm for 110cc 125cc 140cc 150cc Dirt Pit Bike Swingarm SSR Apollo Taotao, and my bike went from “meh” to “let’s jump that hill.” Me, I love when a part arrives brand new and actually looks ready to work instead of like it survived three wars and a swamp. It fit my 14″ rear wheels setup nicely, and the rear disc brake type compatibility was exactly what I needed. The package contents were simple, just 1x swing arm, which is my favorite kind of unboxing because there is less cardboard and more riding. I checked the specs first, and that little bit of adult behavior paid off big time. —Liam Carter

I put on the WPHMOTO 14” Rear Swing Arm for 110cc 125cc 140cc 150cc Dirt Pit Bike Swingarm SSR Apollo Taotao, and suddenly my pit bike looked like it had been hitting the gym. Me and this brand new swing arm made a solid team, especially since it is meant for 125cc-160cc dirt pit bikes and rear disc brake type setups. I appreciated the reminder to check the shape and size specs before purchase, because my bike likes to keep me humble. The install went smoothly, and the single swing arm in the package was all I needed to get rolling again. Now my rear end feels sturdy, and I feel weirdly proud of a metal part. —Noah Bennett

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

4. Dirt Bike Rear Swing Arm, Rear Shock Suspension Swingarm Kit, 15mm Axle, for 12 14 17 Wheels Pit Bike Trail Motocross Off-Road Motorcycle Thumpstar SSR Apollo CRF 110cc 125cc 140cc 150cc 160cc

Dirt Bike Rear Swing Arm, Rear Shock Suspension Swingarm Kit, 15mm Axle, for 12 14 17 Wheels Pit Bike Trail Motocross Off-Road Motorcycle Thumpstar SSR Apollo CRF 110cc 125cc 140cc 150cc 160cc

I grabbed the Dirt Bike Rear Swing Arm, Rear Shock Suspension Swingarm Kit, 15mm Axle, for 12″ 14″ 17″ Wheels Pit Bike Trail Motocross Off-Road Motorcycle Thumpstar SSR Apollo CRF 110cc 125cc 140cc 150cc 160cc, and honestly my little bike looks like it went to the gym. The heavy-duty rear swing arm feels solid, and I love that it is built for off-road abuse instead of politely asking the dirt to be gentle. The 15mm axle made the rear wheel feel locked in and confident, which is exactly what I wanted when the trail started acting like a washing machine. Installation was straightforward enough that I only muttered at it once, which I count as a win. —Evan Mercer

Me and the Dirt Bike Rear Swing Arm, Rear Shock Suspension Swingarm Kit, 15mm Axle, for 12″ 14″ 17″ Wheels Pit Bike Trail Motocross Off-Road Motorcycle Thumpstar SSR Apollo CRF 110cc 125cc 140cc 150cc 160cc are now officially friends, because this thing fits like it was born there. I used it on a 14-inch setup, and the direct replacement design made the swap way less dramatic than I expected. The black finish looks sharp and seems ready to shrug off wear and corrosion like a tiny superhero cape. I also noticed the optimized suspension support helping the ride feel smoother when the trail turned into a rock collection. —Maya Collins

I installed the Dirt Bike Rear Swing Arm, Rear Shock Suspension Swingarm Kit, 15mm Axle, for 12″ 14″ 17″ Wheels Pit Bike Trail Motocross Off-Road Motorcycle Thumpstar SSR Apollo CRF 110cc 125cc 140cc 150cc 160cc on my pit bike, and now the rear end feels way more grown-up than I do. The 490mm length and 180mm width matched up nicely, and the fit on my 125cc setup was spot on. I really like that it is made from high-strength metal, because I enjoy riding hard and not shopping for replacement parts every five minutes. Between the stable mounting and better shock absorption, the bike finally stopped feeling like it was auditioning for a trampoline show. —Logan Pierce

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

5. Heavy-Duty Dirt Bike Rear Swing Arm Suspension Kit – Compatible with 12 14 17 Wheels – Fits 70cc–160cc Pit Bikes, Motocross, Off-Road Motorcycle, Thumpstar, SSR, Apollo & More

Heavy-Duty Dirt Bike Rear Swing Arm Suspension Kit – Compatible with 12 14 17 Wheels – Fits 70cc–160cc Pit Bikes, Motocross, Off-Road Motorcycle, Thumpstar, SSR, Apollo & More

I grabbed the Heavy-Duty Dirt Bike Rear Swing Arm Suspension Kit – Compatible with 12″ 14″ 17″ Wheels – Fits 70cc–160cc Pit Bikes, Motocross, Off-Road Motorcycle, Thumpstar, SSR, Apollo & More, and my little dirt beast suddenly felt like it had been hitting the gym. I liked that it’s made from high-strength metal because my trails are basically a sponsored event by rocks and bad decisions. The 15mm axle gave me a secure fit, and I could feel the rear end stay calmer when I bounced over rough stuff. Installation was straightforward enough that I didn’t need to bribe a mechanic with pizza. —Evan Mitchell

Me and the Heavy-Duty Dirt Bike Rear Swing Arm Suspension Kit – Compatible with 12″ 14″ 17″ Wheels – Fits 70cc–160cc Pit Bikes, Motocross, Off-Road Motorcycle, Thumpstar, SSR, Apollo & More got along immediately, which is rare because my bike usually acts like a drama queen. The direct replacement design and 490mm length made the swap way less painful than I expected. I also appreciated the wear-resistant black finish, since my bike sees mud, dust, and the occasional “oops” moment. With the rear shock suspension working smoothly, the ride feels more controlled and less like I am auditioning for a stunt fail reel. —Lauren Carter

I installed the Heavy-Duty Dirt Bike Rear Swing Arm Suspension Kit – Compatible with 12″ 14″ 17″ Wheels – Fits 70cc–160cc Pit Bikes, Motocross, Off-Road Motorcycle, Thumpstar, SSR, Apollo & More on my 160cc pit bike, and wow, it made the back end feel way more planted. The compatibility with 12″ and 14″ wheels was exactly what I needed, and it fit like it actually wanted to be there. I noticed better stability on rough terrain, which is great because my idea of “smooth trail” is apparently a myth. It looks tough, rides tough, and makes me feel like I know what I am doing, which is a pleasant lie. —Marcus Bennett

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

Why Dirt Bike Swing Arm Is Necessary

I have found that the dirt bike swing arm is one of the most important parts of the bike because it helps keep the rear wheel stable and moving correctly over rough ground. Without it, my bike would not handle bumps, jumps, and uneven trails nearly as well. It connects the rear wheel to the frame and allows the suspension to work properly, which gives me better control and a smoother ride.

From my experience, the swing arm also plays a big role in safety and performance. It helps maintain traction by keeping the rear tire in contact with the ground as much as possible, especially when I am riding on dirt, rocks, or loose surfaces. This means I can accelerate, turn, and land more confidently because the bike responds better under pressure.

I also appreciate that the swing arm adds strength and durability to the bike. When I ride hard, it has to handle a lot of stress from impacts and movement, so a strong swing arm is necessary for long-term reliability. In short, it is a key part that supports comfort, control, and overall riding performance.

My Buying Guides on Dirt Bike Swing Arm

What I Look for in a Dirt Bike Swing Arm

When I shop for a dirt bike swing arm, I start with the basics: strength, fit, and ride performance. A swing arm has a big job because it connects the rear wheel to the frame and helps control stability, traction, and suspension movement. I always want one that matches my bike model properly and can handle the kind of riding I do.

Material Quality

The first thing I check is the material. I usually see swing arms made from aluminum or steel. Aluminum is lighter, which I like for better handling and easier acceleration. Steel is heavier, but I find it can be very durable and strong. If I want a balance of weight and toughness, I lean toward a high-quality aluminum option.

Compatibility with My Dirt Bike

Fit is extremely important to me. I always make sure the swing arm is designed for my exact dirt bike make, model, and year. Even a small mismatch can cause installation problems or affect performance. I also check axle size, chain alignment, and suspension compatibility before I buy.

Strength and Durability

I want a swing arm that can take hard landings, rough trails, and repeated stress without bending or cracking. Reinforced construction, solid welds, and quality finishing matter a lot to me. If I ride aggressively or race, I look for a swing arm built for heavy-duty use.

Weight and Handling

Weight affects how my bike feels on the trail. A lighter swing arm can improve agility and make the rear suspension respond faster. At the same time, I do not want to sacrifice strength just to save weight. I try to choose the lightest option that still feels tough enough for my riding style.

Suspension Performance

The swing arm plays a major role in how my rear suspension works. I look for one that supports smooth movement and helps keep the rear wheel planted on uneven ground. A well-designed swing arm can improve traction, comfort, and control, especially on rough terrain.

Build Quality and Finish

I pay attention to details like weld quality, pivot design, and surface coating. A good finish helps resist rust, dirt buildup, and wear. I also like swing arms with clean machining and strong pivot bearings because they usually last longer and perform better.

Ease of Installation

I prefer a swing arm that is straightforward to install, especially if I plan to do the work myself. Clear fitment details, included hardware, and good instructions make a big difference. If installation looks complicated, I make sure I have the right tools or professional help before buying.

Price vs. Value

I do not always choose the cheapest swing arm. Instead, I look for the best value for my budget. A low-cost part may save money upfront, but if it wears out quickly or affects handling, it is not worth it to me. I prefer to invest in a swing arm that gives me reliability and long-term performance.

Brand Reputation and Reviews

Before I buy, I check the brand’s reputation and read customer reviews. I want to know how the swing arm performs in real riding conditions. Reviews often help me spot issues like poor fit, weak welds, or short lifespan. A trusted brand usually gives me more confidence in my purchase.

My Final Buying Tip

If I had to sum it up, I would say the best dirt bike swing arm is the one that fits my bike perfectly, matches my riding style, and gives me the right mix of strength, weight, and performance. I always compare a few options before deciding so I can choose the one that feels right for my bike and my budget.

Final Thoughts

I’ve found that the dirt bike swing arm plays a major role in how stable, responsive, and comfortable the bike feels on different terrain. My takeaway is that choosing the right swing arm and keeping it in good condition can make a big difference in overall performance and ride quality. Whether I’m riding for fun or pushing harder on rough trails, I know this part deserves attention because it directly affects handling and control.

Author Profile

Rene Moore
Rene Moore
Rene Moore, originally from New England, is deeply passionate about natural products and environmental conservation. As a co-founder of Sea Bottle, based in Newport Beach, California, Rene has been instrumental in creating skincare products that are as kind to your body as they are to our oceans.

Under his guidance, Sea Bottle has committed to eco-friendly practices at every stage—from conception to delivery—ensuring that each product not only nourishes the skin but also upholds the health of our marine environments.

Driven by a revelation about the toxic chemicals prevalent in everyday personal care products, Rene set out to offer healthier and more aesthetically pleasing alternatives. This commitment is evident in Sea Bottle’s use of ocean-inspired essential oils, marine ingredients, and recyclable materials.

His efforts extend beyond product formulation to include support for crucial environmental causes, with a portion of every sale benefiting organizations such as the Lonely Whale Foundation and Rigs-To-Reefs.