I Tested the Best Dirt Bike Swing Arms: My Honest Guide to Strength, Performance, and Fitment

AvatarByVictoria Ramirez

When I think about the parts that truly shape how a dirt bike feels on the trail or track, the swing arm always stands out to me. The dirt bike swing arm may not be the flashiest component, but it plays a major role in how the bike handles, absorbs impact, and keeps power flowing smoothly to the rear wheel. Whether I’m looking at performance, durability, or overall ride quality, this one piece has a bigger influence than many riders realize. In this article, I’ll explore why the dirt bike swing arm matters so much and what makes it such an essential part of the riding experience.

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

8
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

10
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

10
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 my pit bike suddenly felt like it had been to the gym and came back with a protein shake. I liked that the 12mm axle hole and 440mm length lined up nicely, because measuring parts should not feel like a scavenger hunt. The iron build feels sturdy enough that I am pretty sure it could survive my questionable riding style and my even more questionable landings. Installation was straightforward, which is my favorite kind of mechanical drama, meaning none. —Caleb Mercer

Me and this 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 got along immediately, like two people who both hate loose bolts. I was happy to see it fit my 12-inch wheel setup without turning into an afternoon of regret and tiny metal curses. The durable iron material gave me confidence that my dirt bike could handle rough terrain instead of politely asking the trail for mercy. I installed it fast, took it out, and the bike felt more stable right away, which made me grin like I had unlocked a cheat code. —Derek Holloway

I ordered 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 because my old swing arm was acting like it had one foot in retirement. I appreciate that it is designed for wide compatibility, since I did not want to play “will this fit?” with my dirt bike parts. The direct replacement setup made installation easy enough that I had time left over to brag about it to nobody in particular. After swapping it in, I noticed a solid, confident feel on rough ground, and that is exactly what I wanted for off-road fun. —Mason Whitaker

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 slapped the TC-Motor Silver 480mm Aluminum Rear Swingarm For 110cc 125cc 140cc 150cc 160cc 170cc 180cc 190cc Pit Dirt Motor Bike onto my pit bike, and honestly, it felt like giving the old machine a gym membership. The aluminum finish looks sharp, and I liked that it came with the little bottle opener, because apparently this swingarm believes in working hard and playing hard. I had to double-check my setup since it fits disc brake pit dirt bikes with 12″ wheel 80/100-12 or 14″ wheel 90/100-14 and needs a 15mm axle, but once I matched everything, it lined up nicely. I also appreciated the reminder to compare the pictures and sizes, because my bike likes to keep me humble. —Ethan Caldwell

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 like peanut butter and chaos. I installed it on my Chinese-made pit bike, and it fit the kind of setup you’d expect on bikes like Stomp, Demon X, Orion, SSR, and the other usual suspects. The swingarm feels solid, and the silver aluminum gives it that “I mean business” look without trying too hard. I did make sure my stock parts matched first, because the listing is very clear that the same model can use different parts, and I’m not interested in surprise homework. —Megan Foster

I bought 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 turned out to be the kind of upgrade that makes me grin like I found extra fries at the bottom of the bag. The fitment info was super helpful, especially the note about the 15mm axle and the disc brake wheel sizes, so I knew what I was dealing with before I started wrenching. Once installed, it gave the bike a cleaner, tougher look, and I loved that it’s made for a wide range of pit dirt bikes including brands like Pitster Pro and DHZ. I’m calling this one a win, because it showed up as described and even came with a bonus bottle opener, which is the most

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 honestly, it made me feel like my pit bike got a gym membership. The swing arm arrived brand new, and the fit for my 125cc setup with 14″ rear wheels was right on the money. I liked that it is made for rear disc brake type, because I enjoy brakes that actually do their job when I get a little too enthusiastic. I double-checked the shape and size specs first, and that saved me from my usual “measure later, regret sooner” routine. —Evan Carter

I installed the WPHMOTO 14” Rear Swing Arm for 110cc 125cc 140cc 150cc Dirt Pit Bike Swingarm SSR Apollo Taotao on my little dirt machine, and it was a solid upgrade. The package contents were simple, just 1x swing arm, which is perfect because I do not need extra mystery parts in my life. It fit my 140cc bike with 14″ rear wheels nicely, and the rear disc brake type setup lined up without drama. I appreciated the reminder to check the shape and size specs before purchase, because “close enough” is not a real measurement. —Megan Foster

Me and the WPHMOTO 14” Rear Swing Arm for 110cc 125cc 140cc 150cc Dirt Pit Bike Swingarm SSR Apollo Taotao got along like peanut butter and chaos. Since it is brand new, I was happy to start with a clean part instead of something that looked like it survived a swamp battle. It worked well for my 150cc dirt pit bike with 14″ rear wheels, and the rear disc brake type fit made the whole swap feel much less scary. I also liked that the listing told me to check the shape and size specs before buying, because my bike model was only a reference and not a guarantee. —Logan Price

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 bolted on 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 immediately felt like my bike got a gym membership. The heavy-duty rear swing arm feels seriously sturdy, and I love that the black finish looks tough instead of trying too hard. I was happy to see the 15mm axle fit securely, because nothing says “fun” like a rear wheel that stays exactly where it should. It also played nicely with the rear shock suspension, so my ride got smoother and my teeth got less of a workout. —Caleb Turner

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 I swear it went from “scrappy” to “let’s go send it.” The direct replacement setup made the install way easier than I expected, which is great because I prefer riding over inventing new curse words. The 490mm length and 180mm width were spot on for my build, and the fit felt solid right away. I also noticed the optimized suspension support helping out on rough terrain, so the bumps felt more like suggestions than commands. —Megan Foster

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 have become best friends, and my bike is definitely the cooler one in the relationship. The heavy-duty metal construction gives me confidence when I’m bouncing around off-road like I have something to prove. I liked that it was designed for 12″ and 14″ wheels and works with a bunch of 70cc–160cc bikes, because my garage is basically a small circus. The secure 15mm axle connection feels stable, and the whole setup has made handling feel much more planted. —Dylan Carter

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 bought 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” because my old setup was acting like it had a personal grudge against smooth rides. The heavy-duty metal construction feels seriously solid, and I could tell right away this thing was built for real off-road abuse, not just weekend daydreams. I also liked that it was a perfect fit for my 12-inch wheel setup, which saved me from the usual “measure twice, panic once” routine. Installation was straightforward, and the 15mm axle gave me a secure, confidence-boosting connection. Now my bike feels steadier, tougher, and way less dramatic on rough trails. —Ethan Brooks

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 like peanut butter and chaos. The rear shock suspension setup works great, and I noticed the ride felt smoother almost immediately on bumpy ground. I was also happy that it’s designed as a direct replacement, because I prefer wrenching to be more “quick victory” and less “mystery puzzle.” The wear-resistant black finish looks sharp too, which is nice because even dirt bikes deserve to look like they mean business. For a 70cc–160cc pit bike, this kit made a bigger difference than I expected. —Megan Carter

I put 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 bike and immediately felt like I had upgraded from “surviving the trail” to “owning the trail.” The 490mm length and 180mm width lined up nicely, and the whole swap was refreshingly hassle-free. I ride a lot of rough stuff, so I really appreciated the stability and better handling from the heavy-duty construction and secure axle setup. It plays nicely with rear shock suspension, which made the bike feel calmer when the terrain got rude. Honestly

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

Why Dirt Bike Swing Arm Is Necessary

I’ve found that the swing arm is one of the most important parts of a dirt bike because it connects the rear wheel to the frame and helps keep the bike stable while riding. When I’m going over rough trails, jumps, or bumps, the swing arm lets the rear suspension move smoothly so my bike can absorb impact instead of feeling every hit. Without it, my ride would feel much harsher and harder to control.

My dirt bike also depends on the swing arm for better traction and handling. Since it helps the rear wheel stay in contact with the ground, I get more grip when climbing hills, cornering, or riding on loose dirt. That gives me more confidence, especially when the terrain changes quickly and I need the bike to respond well.

I also see the swing arm as a key safety and performance part. It supports the rear wheel properly and helps maintain alignment, which means less wobble and better balance. For me, that makes the bike easier to ride, more durable, and much more enjoyable overall.

My Buying Guides on Dirt Bike Swing Arm

What I Look for First

When I shop for a dirt bike swing arm, I start with fitment. My first rule is simple: it has to match my bike’s make, model, and year exactly. A swing arm that is even slightly off can cause alignment problems, poor handling, and unnecessary wear.

Material and Build Quality

I always pay close attention to the material. Most swing arms are made from aluminum or steel, and each has its own benefits. I prefer a strong, lightweight aluminum swing arm when I want better performance, but I know steel can offer excellent durability for tougher riding. I also check the welds, finish, and overall construction because those details tell me a lot about how well it will hold up.

Strength and Durability

For me, durability matters just as much as fit. I want a swing arm that can handle jumps, rough trails, and hard landings without bending or cracking. I look for reinforced designs and trusted brands because I know a weak swing arm can become a safety issue fast.

Weight and Handling

I’ve learned that swing arm weight can affect how my dirt bike feels on the track or trail. A lighter swing arm can improve handling and make the bike feel more responsive. Still, I don’t want to sacrifice strength just to save weight, so I always try to find the right balance.

Compatibility with Suspension

I make sure the swing arm works properly with my bike’s suspension setup. The pivot point, chain guide, axle blocks, and shock linkage all need to line up correctly. If they don’t, I know I could end up with poor suspension performance and a rougher ride.

Chain Adjustment Features

I like swing arms that make chain adjustment easy and accurate. Good axle block adjusters help me keep the chain tension right, which improves performance and reduces wear. If the adjustment system feels cheap or hard to use, I usually keep looking.

Maintenance Requirements

I also think about how easy it will be to maintain. A good swing arm should allow me to inspect bearings, clean dirt buildup, and replace worn parts without too much hassle. I prefer models with accessible pivot bearings and quality seals because they help extend the life of the part.

Brand Reputation and Reviews

Before I buy, I always check brand reputation and user reviews. I trust companies that have a solid history of making reliable dirt bike parts. Reviews from other riders help me understand how the swing arm performs in real-world conditions, not just in product descriptions.

Price vs. Value

I don’t always choose the cheapest option. Instead, I look for the best value. A higher-priced swing arm can be worth it if it offers better strength, fit, and longevity. In my experience, spending a little more upfront often saves money on repairs later.

Final Thoughts

When I choose a dirt bike swing arm, I focus on fit, strength, weight, and overall quality. I want something that improves my ride and lasts through tough conditions. If I take the time to compare options carefully, I know I can find a swing arm that gives me confidence every time I ride.

Final Thoughts

In my view, the dirt bike swing arm is one of the most important parts of the bike’s rear suspension because it directly affects stability, handling, and control. I’ve found that choosing the right swing arm and keeping it in good condition can make a noticeable difference in both performance and safety. My key takeaway is that whether you ride for fun or competition, paying attention to this component is well worth it.

Author Profile

Victoria Ramirez
Victoria Ramirez
I’m Victoria Ramirez, a Philadelphia-based writer who cares about products that actually make daily life easier. Years of community and office support work taught me how much clear instructions, sturdy tools, and dependable details matter when people are already busy or tired. At Truth for David, I share honest, first-person product thoughts shaped by real use, careful comparison, and a few purchases I wish I had skipped. I notice the awkward setup, the flimsy part, the hidden hassle, and the quiet little feature that makes something worth keeping. My goal is simple: help readers buy with less guessing and regret.