Are you looking for the best square taper crank arms for your bike? We offer a clear and simple guide to help you find durable and high-quality crank arms that fit your bike perfectly.
Square taper crank arms are a key part of your bike’s power system. They connect your pedals to the bike, giving you smooth and steady rides. Choosing the right one can boost your biking fun.
These crank arms come in different sizes and materials. They fit many bike types, from mountain bikes to electric bikes. Each one is built to last long and work well.
We’ve picked the best square taper crank arms for you. Our guide makes it easy to choose. Let’s find the perfect fit for your bike!
List of Top 10 Square Taper Crank Arms
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Prowheel One Pair Bike Crank Arm Available in Square Hole,152MM/160MM/165MM/170MM/175MM Alloy 6061Black Crank Arm for e-Bike Electric Bike e Bicycle |
This crank arm is perfect for e‑bike riders who want a strong, simple, and safe upgrade. It suits anyone who needs a durable part that fits a square taper setup with the right size for smooth rides. |
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Cyclon Single Speed Square Taper Crankset, 170mm Mountain Bike Crankset with 104BCD 32T/34T/36T/38T/40T/42T Narrow Wide Tooth Round Black Chainring, Replacement for Bicycle Crank Arm Set MTB Crankset |
This crankset is perfect for mountain bike riders who want a strong, smooth, and simple setup. It’s great for anyone who needs a reliable single‑speed upgrade that keeps the chain steady on every ride. |
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PROWHEEL Ebike Crank Arm Available in Square Hole,140MM/152MM/160MM/165MM/170MM/175MM Black Bike Crank Arm for Electric Bike,Mid Mounted Motor,Torque(1 Pair) |
This PROWHEEL Ebike Crank Arm is perfect for electric bike owners who need a durable and reliable replacement. It’s ideal for those with mid-mounted motors and square hole spindles. |
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PATHGNAR Bike Crank Arm in Square Hole,Black 170MM Crank Arm for Electric Bike, Mid Mounted Motor, Torque(1 Pair) |
This PATHGNAR Bike Crank Arm is perfect for electric bike owners who need a durable and reliable replacement. It’s ideal for mid-mounted motors and fits bikes with a square hole spindle interface. |
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PETCHOR Square Taper Crankset MTB, Mountain Bike Single Speed Crankset, Bicycle Crank Arm Set 170mm 104BCD, 32T Chainring & Bolts |
If you ride a single‑speed bike and want a light, strong crankset, this set is for you. |
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Epessa Crank Arm Left Available in Diamond Hole and Square Hole,170mm |
This crank arm is perfect for cyclists, home riders, and anyone who needs a simple, strong, and easy-fit replacement crank arm. It’s great for people who want a quick fix that works with both diamond and square interfaces. |
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LXFNDZW Mountain Bike Crank Arm 170mm Left Square Taper Replacement Bike Crank | Forged Alloy Durable Bike Components | Compatible with Standard Square Spindle Bottom Bracket |
This is perfect for bike riders who need a simple left crank fix. It is also great for home repair and daily bike care. |
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PATHGNAR Bike Crank Arm in Square Hole,Black 170MM Crank Arm for Electric Bike, Mid Mounted Motor, Torque(1 Pair) |
This PATHGNAR Bike Crank Arm is perfect for electric bike owners who need a sturdy and durable replacement. It’s ideal for mid-mounted motors and fits bikes with a square hole spindle interface. |
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PROWHEEL Bike Crank Arm,One Pair Universal 152MM/160MM/165MM/170MM/175MM BCD 104MM Square Hole Bike Crank Arm for City Bike,Road Bike,Folding Bike,Mountain Bike,Ebike |
This product is perfect for bike riders who want a strong, easy-fit crank arm for city rides, road trips, folding bikes, mountain trails, or an ebike. It suits anyone who wants a simple, durable, and ready-to-install upgrade. |
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GANOPPER 165mm MTB 1X Crankset 32T Square Tapered 104BCD Narrow Wide Teeth Single Speed Crank Arm Set |
This set is perfect for riders who want a light, strong, and easy‑to‑upgrade crank for smooth single‑speed power. It’s great for anyone who loves simple gear setups and wants a fast, clean, and reliable ride. |
Detailed Reviews
Discover the top 10 Square Taper Crank Arms in this expert-reviewed guide. Each product is handpicked for quality, performance, and value, ensuring you find the perfect fit for your ride. Whether you need strength, durability, or affordability, this list has you covered. Dive in to find the best upgrade for your bike today!
1. Prowheel One Pair Bike Crank Arm Available in Square Hole,152MM/160MM/165MM/170MM/175MM Alloy 6061Black Crank Arm for e-Bike Electric Bike e Bicycle
The Prowheel crank arm gives your bike strong, steady power. It uses Alloy 6061 for long life. It stays firm and does not bend.
You can pick the size you need. It fits bikes with a square taper setup. It works only on electric bikes.
Each arm has a clear L or R mark. Install it the right way. Enjoy smooth, safe riding.
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Perfect For:
This crank arm is perfect for e‑bike riders who want a strong, simple, and safe upgrade. It suits anyone who needs a durable part that fits a square taper setup with the right size for smooth rides.
Ready to Purchase?
2. Cyclon Single Speed Square Taper Crankset, 170mm Mountain Bike Crankset with 104BCD 32T/34T/36T/38T/40T/42T Narrow Wide Tooth Round Black Chainring, Replacement for Bicycle Crank Arm Set MTB Crankset
The Cyclon Single Speed Crankset gives your bike a clean, strong, and smooth feel. The frosted and anodized finish adds extra protection for long use.
The 170mm crank arms fit 104BCD chainrings and standard pedals. The narrow‑wide teeth keep your chain steady on rough rides.
It fits many bikes. It stops chain drops. It comes with tools and bolts.
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Perfect For:
This crankset is perfect for mountain bike riders who want a strong, smooth, and simple setup. It’s great for anyone who needs a reliable single‑speed upgrade that keeps the chain steady on every ride.
Ready to Purchase?
3. PROWHEEL Ebike Crank Arm Available in Square Hole,140MM/152MM/160MM/165MM/170MM/175MM Black Bike Crank Arm for Electric Bike,Mid Mounted Motor,Torque(1 Pair)
This crank arm is strong. It is stable. It lasts a long time.
The forged alloy build gives you solid power. It keeps your ride smooth.
You can pick the size you need. It fits square taper setups.
The left and right arms are clearly marked. They install fast. They work clean and safe.
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Perfect For:
This PROWHEEL Ebike Crank Arm is perfect for electric bike owners who need a durable and reliable replacement. It’s ideal for those with mid-mounted motors and square hole spindles.
Ready to Purchase?
4. PATHGNAR Bike Crank Arm in Square Hole,Black 170MM Crank Arm for Electric Bike, Mid Mounted Motor, Torque(1 Pair)
The PATHGNAR bike crank arm is strong and steady. It uses Forged Alloy 6061 for long life. It stays firm and does not bend.
The 170MM size fits many electric bikes. The square taper design keeps it tight.
Each arm has a clear L and R mark. The fit is simple and clean. The maker offers help if you need it.
| Pros | Cons |
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Perfect For:
This PATHGNAR Bike Crank Arm is perfect for electric bike owners who need a durable and reliable replacement. It’s ideal for mid-mounted motors and fits bikes with a square hole spindle interface.
Ready to Purchase?
5. PETCHOR Square Taper Crankset MTB, Mountain Bike Single Speed Crankset, Bicycle Crank Arm Set 170mm 104BCD, 32T Chainring & Bolts
The PETCHOR Square Taper Crankset is a high-quality upgrade for your mountain bike. Made from strong aluminum alloy, it’s built to last and looks great with its frosted, anodized finish.
It fits single-speed bikes, comes with a 32T chainring, and has a 170mm crank arm. Easy to install, it’s perfect for MTB riders seeking lightweight performance.
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Perfect For:
If you ride a single‑speed bike and want a light, strong crankset, this set is for you.
Ready to Purchase?
6. Epessa Crank Arm Left Available in Diamond Hole and Square Hole,170mm
The Epessa Crank Arm Left is strong and durable. It comes in two styles: Diamond Hole and Square Hole. Both fit 170mm bikes perfectly.
Made from high-quality aluminum alloy, it’s lightweight yet tough. It works with 9/16 inch pedals, making it easy to install.
Check your bike’s interface before buying. If you’ve replaced the crank before, update the bottom bracket too. We’re here to help with any issues!
| Pros | Cons |
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Perfect For:
This crank arm is perfect for cyclists, home riders, and anyone who needs a simple, strong, and easy-fit replacement crank arm. It’s great for people who want a quick fix that works with both diamond and square interfaces.
Ready to Purchase?
7. LXFNDZW Mountain Bike Crank Arm 170mm Left Square Taper Replacement Bike Crank | Forged Alloy Durable Bike Components | Compatible with Standard Square Spindle Bottom Bracket
This 170mm crank arm is strong, simple, and ready to work. It fits many bikes with a square taper setup. It installs fast with basic tools.
It gives smooth power and steady performance. It is a reliable part for easy repairs.
| Pros | Cons |
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Perfect For:
This is perfect for bike riders who need a simple left crank fix. It is also great for home repair and daily bike care.
Ready to Purchase?
8. PATHGNAR Bike Crank Arm in Square Hole,Black 170MM Crank Arm for Electric Bike, Mid Mounted Motor, Torque(1 Pair)
The PATHGNAR Bike Crank Arm is made from strong Forged Alloy 6061. It is built to last and will not bend easily. This crank arm fits electric bikes only and measures 170MM.
Make sure to install the left and right arms correctly, marked L and R. If you replace the crank, you may need a new bottom bracket too.
| Pros | Cons |
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Perfect For:
This PATHGNAR Bike Crank Arm is perfect for electric bike owners who need a sturdy and durable replacement. It’s ideal for mid-mounted motors and fits bikes with a square hole spindle interface.
Ready to Purchase?
9. PROWHEEL Bike Crank Arm,One Pair Universal 152MM/160MM/165MM/170MM/175MM BCD 104MM Square Hole Bike Crank Arm for City Bike,Road Bike,Folding Bike,Mountain Bike,Ebike
Upgrade your ride with the PROWHEEL Bike Crank Arm. This one-piece die-cast crank arm is made from forged alloy 6061, ensuring strength and durability. It’s built to last and resists deformation.
Available in black, it comes in 152MM/160MM/170MM/175MM lengths with a BCD 104MM fit. It works with 9/16 pedal diameters and uses a square taper spindle.
Installation is simple but crucial. The left (L) and right (R) sides are clearly marked. The package includes crank arms, chainring screws, and bolts for a complete setup.
| Pros | Cons |
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Perfect For:
This product is perfect for bike riders who want a strong, easy-fit crank arm for city rides, road trips, folding bikes, mountain trails, or an ebike. It suits anyone who wants a simple, durable, and ready-to-install upgrade.
Ready to Purchase?
10. GANOPPER 165mm MTB 1X Crankset 32T Square Tapered 104BCD Narrow Wide Teeth Single Speed Crank Arm Set
The GANOPPER 165mm MTB 1X Crankset is a lightweight and durable option for mountain bike riders. It features a 32T narrow-wide chainring, perfect for single-speed setups. This crankset is made from high-quality aluminum, ensuring a long-lasting performance.
With a 104mm BCD, this crankset is compatible with most mountain bikes. The matte black finish adds a sleek look to your ride. It’s easy to install and modify, making it a great choice for bike enthusiasts.
The package includes everything you need: a 165mm square taper crank, a 104BCD chainring, and chainring bolts. This complete set is ready to upgrade your mountain bike’s drivetrain.
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Perfect For:
This set is perfect for riders who want a light, strong, and easy‑to‑upgrade crank for smooth single‑speed power. It’s great for anyone who loves simple gear setups and wants a fast, clean, and reliable ride.
Ready to Purchase?
Buying Guide
Square taper crank arms make your bike ride smooth and strong. They connect your pedals to the bike with steady power. Picking the right one makes your ride more fun and reliable.
Here are the key factors to consider when buying square taper crank arms:
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Size: Choose the right length for your riding style. Common sizes are 152mm to 175mm. Shorter arms help with quick pedaling, longer arms give more power.
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Material: Look for durable materials like forged alloy or aluminum. These last longer and resist bending.
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Compatibility: Make sure the crank arms fit your bike’s square taper bottom bracket. Check the spindle size and pedal thread.
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Bike Type: Some crank arms are made for electric bikes, others for mountain or road bikes. Pick one that matches your bike type.
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Chainring Compatibility: If you want to change chainrings, check the bolt circle diameter (BCD). This affects what chainrings you can use.
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Weight: Lighter crank arms help with faster riding but may cost more. Heavier ones are often stronger and cheaper.
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Finish and Protection: Anodized or frosted finishes protect against rust and wear. This keeps your crank arms looking good longer.
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Installation: Look for clear left (L) and right (R) markings. This makes installation easy and safe.
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Included Parts: Some crank arms come with chainring bolts and tools. This can save you time and extra purchases.
Choosing the right square taper crank arms means better power, longer life, and a smoother ride. Keep these factors in mind to find the perfect match for your bike.