10 Best 1x Cranksets For Mountain Bikes In 2026

Choosing the right crankset can make your hardtail or trail bike feel smoother, simpler, and more efficient. A well-matched 1x crankset for mountain bike use keeps shifting clean while reducing weight and maintenance.

Below, we focus on practical options for riders who want reliable single-chainring performance without overcomplicating their setup.

Best 10 1x Crankset for Mountain Bike Picks for 2026

Trail-Saver Square Taper – Compact 104BCD Single-Speed Build

If you’re looking for a 1x crankset for mountain bike use, this square taper option keeps things simple with a 170mm arm, 104BCD spider, and narrow-wide chainring choices from 32T to 42T. It’s aimed at single-speed setups, so it makes sense for riders who want a straightforward drivetrain with chain-retention-focused teeth and a durable anodized finish.

Best For: Riders building or replacing a single-speed MTB crankset with multiple chainring size options.

Pros:

• Square taper crankset with 170mm arms and 9/16" pedal compatibility.
• Narrow-wide 104BCD chainring design helps prevent chain drop.
• Multiple chainring sizes available: 32T, 34T, 36T, 38T, 40T, and 42T.
• Frosted, anodized aluminum alloy finish is meant to improve wear resistance.

Cons:

• Designed for single-speed use, not multi-speed bikes.
• Bottom bracket is not mentioned in the included package.

This is a practical pick if you want a basic, chain-retaining 1x crankset for mountain bike setups without extra drivetrain complexity. The multiple ring sizes make it easier to match gearing to your riding style.

All-In-One Alloy Crank – Crankset with Bottom Bracket

For riders shopping a 1x crankset for mountain bike or dirt-bike style setups, this 170mm 104BCD crank set stands out because it includes the bottom bracket and installation hardware. The aluminum alloy construction, lightweight claim, and broad compatibility make it a convenient replacement choice for riders who want a more complete package.

Best For: Buyers who want a ready-to-install crankset package with bottom bracket included.

Pros:

• Includes crank set, bottom bracket, chainring bolts, crank screw, and Allen wrench.
• 104mm BCD with 170mm crank arms suits common MTB-style setups.
• Made from high-strength aluminum alloy and listed at about 675g.
• Compatible with many bikes, including Shimano, FSA, and Giant examples noted by the seller.

Cons:

• Product details do not specify chainring tooth count.
• Compatibility is broad, but buyers still need to verify bottom bracket width and fit.

This is a strong convenience pick if you want fewer missing parts in the box. It is especially useful when you prefer a complete crankset kit rather than sourcing the bottom bracket separately.

Chain-Retention Single Speed – Removable 104BCD MTB Crankset

If your priority is a 1x crankset for mountain bike use with a simple single-speed setup, this 104BCD square taper crankset is built around a removable chainring and narrow-wide tooth profile. The 170mm arms, anodized aluminum finish, and compatibility with common single-speed MTB sizes make it a straightforward replacement option.

Best For: Single-speed riders who want a removable chainring crankset with chain retention features.

Pros:

• Narrow-wide teeth help improve chain retention.
• Removable chainring design makes single-speed modifications easier.
• 170mm crank arms with 104BCD and 9/16" pedal compatibility.
• High-strength aluminum alloy body with frosted, anodized finish.

Cons:

• Only fits single-speed use, not multi-speed bikes.
• Chainring size details in the notes are somewhat mixed.

This crankset is best viewed as a clean, practical single-speed conversion or replacement part. The removable ring and narrow-wide profile are the main reasons to choose it for a basic 1x drivetrain.

Lightweight Square Taper – 104BCD Crank with 38T Ring

For a 1x crankset for mountain bike riders who want a simple, lightweight setup, this square taper model uses a 170mm crank arm and a 104BCD removable chainring. The included 38T narrow-wide ring, alloy construction, and 9/16" pedal fit make it a practical option for single-speed MTB or road-bike-style applications.

Best For: Riders who want a lightweight 38T single-speed crankset with strong chain retention.

Pros:

• Includes a 38T 104BCD chainring with narrow-wide tooth design.
• 6061 alloy crank arm and 7075 chainring materials are listed.
• 170mm square taper design with 9/16" pedal compatibility.
• Chain retention design is intended to reduce noise and friction.

Cons:

• Bottom bracket is not included.
• Only one chainring size is specified in the notes.

This model makes sense if you already have the rest of the drivetrain sorted and just need a dependable 1x crankset centerpiece. The 38T ring gives it a clear, ready-to-use identity for single-speed riding.

Compact Square-Taper 1x Option – Cyclon 170mm Square Taper MTB Crankset

If you want a straightforward 1x crankset for mountain bike use, this Cyclon square-taper setup keeps things simple with a 170mm arm and a 104BCD chainring. It’s built from aluminum alloy with a frosted, anodized finish, and the narrow-wide tooth profile is aimed at helping keep the chain in place on single-speed setups.

Best For: Riders wanting a basic, compatible square-taper MTB crankset for single-speed or 1x-style builds.

Pros:

• 170mm aluminum alloy crank arms with frosted anodized finish
• 104BCD chainring options in 32T, 34T, 36T, 38T, 40T, and 42T
• Narrow-wide tooth design helps reduce chain drops
• Includes chainring bolts and a three-pronged wrench

Cons:

• Only suitable for single-speed use, not multi-speed bikes
• Square taper design may not suit riders looking for a direct modern interface

This is a practical pick if you need a simple replacement crankset with multiple chainring size choices. The included hardware and compatibility notes make it especially useful for basic MTB or road single-speed conversions.

Wide-Compatibility 1x Crankset – WEEROCK 42T 104 BCD MTB Set

This 1x crankset for mountain bike setups is aimed at riders who want a simple aluminum alloy crank with broad compatibility. The WEEROCK set uses a 170mm arm, a 104 BCD chainring, and a narrow-wide tooth profile designed to help prevent chain drops on single-speed and multi-speed-compatible builds.

Best For: Riders wanting a 42T crankset with wide speed compatibility and easy future chainring replacement.

Pros:

• 170mm aluminum alloy crank arm with sturdy, non-rusting construction
• 42T narrow-wide chainring helps reduce chain drop
• 104 BCD format makes future chainring replacement more convenient
• Compatible with single speed and 6/7/8/9/10/11-speed MTB bikes

Cons:

• Only one chainring size is listed: 42T
• Heavier than some ultralight single-speed-focused options at 0.75kg net weight

For riders who want more compatibility than a single-speed-only crankset, this is a flexible choice. The 104 BCD design and narrow-wide tooth profile make it a practical option when you want simpler drivetrain setup with room to swap chainrings later.

Lightweight Single-Speed Pick – BUCKLOS 104 BCD 30T Square Taper Crankset

If your priority is a lightweight 1x crankset for mountain bike use, this BUCKLOS option keeps the package compact at just 550g for the crank and uses a 30T narrow-wide chainring. It’s a square-taper, 170mm crankset that’s intended for single-speed applications only, with 7075 aluminum for the chainring.

Best For: Single-speed riders who want a lightweight crankset with a small 30T chainring.

Pros:

• Very light crank weight at 550g
• 170mm square-taper crank arms with 104BCD mounting
• 30T narrow-wide 7075 aluminum chainring for chain retention
• Includes crankset, chainring, and chainring bolts

Cons:

• Only fits single-speed use, not other speeds
• 30T chainring may be too small for riders wanting a taller gear

This is the most focused single-speed option in the group, especially if weight matters. The small chainring and narrow-wide profile make it a sensible pick for riders building a simple, light MTB drivetrain.

Lightweight Square-Taper Upgrade – BOLANY MTB 1x Crankset

If you’re looking for a 1x crankset for mountain bike use with a simple square-taper setup, this BOLANY option focuses on low weight, a 104 BCD interface, and narrow-wide chainring support. It is built around a 170mm crank arm and is offered in 32T, 34T, and 36T sizes, making it a practical choice for riders who want to fine-tune gearing on a single-speed setup.

Best For: Riders who want a lightweight, single-speed-friendly 1x crankset with multiple chainring size options.

Pros:

• High-strength 7075 aluminum alloy helps reduce weight and improve stiffness.
• 104 BCD narrow-wide chainring design is optimized for single-speed use.
• 170mm crank arms suit a straightforward MTB drivetrain upgrade.
• Available in 32T, 34T, and 36T options for gearing flexibility.

Cons:

• Square taper design may not suit riders looking for a modern interface.
• Listed options are focused on single-speed chainrings rather than multi-speed use.

Overall, this crankset is geared toward riders who want a clean, lightweight 1x setup with simple compatibility and gearing choices. Its value is strongest where single-speed performance and easy sizing matter more than extra drivetrain complexity.

Most Flexible Gear Range – MTB Square Taper Crankset 32T-42T

This 1x crankset for mountain bike setups is built around a square-taper design, 170mm arms, and a 104 BCD chainring interface. It stands out for its wider chainring range, with 32T through 42T options, so you can choose a gearing setup that better matches your riding needs while staying within a simple single-speed-compatible format.

Best For: Riders who want a square-taper 1x crankset with more chainring size choices.

Pros:

• 104 BCD narrow-wide chainring helps reduce chain drop.
• 170mm crank arms and square taper design keep installation straightforward.
• Wide range of chainring sizes from 32T to 42T.
• Frosted and anodized finish is meant to protect the aluminum alloy body.

Cons:

• Not for multi-speed bikes, despite broad compatibility wording.
• Single chainring package may be limiting for riders wanting drivetrain flexibility.

For riders comparing 1x crankset for mountain bike options, this one is appealing if chainring choice is the top priority. The combination of a simple square-taper build and multiple gearing options makes it easy to tailor the setup to your terrain.

Versatile Single-Speed Pick – MTB Square Taper Crankset 34T

For shoppers evaluating a 1x crankset for mountain bike use, this version follows the same square-taper, 170mm, 104 BCD formula while keeping the setup simple and practical. It uses an aluminum-alloy construction with a frosted anodized finish and is sold with a 34T chainring, which is a useful middle-ground gearing choice for many single-speed builds.

Best For: Riders who want a straightforward 34T single-speed crankset with a simple square-taper fit.

Pros:

• 170mm crank arms pair with a reliable square-taper interface.
• 104 BCD narrow-wide chainring helps prevent chain drop.
• Aluminum-alloy body with frosted anodized protection.
• 34T option offers a balanced gearing choice for 1x setups.

Cons:

• Only suitable for single-speed use, not multi-speed bikes.
• Limited to the included chainring configuration in this listing.

This is a solid no-frills option if you want a dependable single-speed crankset with a common 34T setup. It keeps the design focused on simplicity, making it a sensible pick when you want to avoid overcomplicating a drivetrain swap.

How We Picked the Best 1x Crankset for Mountain Bike

We focused on cranksets that make sense for everyday MTB use: compatible chainring sizes, common axle standards, practical crank arm lengths, and setups suited to real-world trail riding. We also prioritized straightforward installation, broad drivetrain compatibility, and value for riders upgrading from worn or outdated parts.

Quick Comparison

Most 1x Crankset for Mountain Bike options in this roundup fall into two main camps: square taper cranksets for budget-friendly compatibility, and 104 BCD cranksets for riders who want easy chainring swaps. Within those groups, the biggest differences are arm length, chainring size, and whether the set is best for single speed or geared drivetrains.

Key Buying Factors for 1x Crankset for Mountain Bike

Bottom Bracket and Spindle Compatibility

Start with the frame and bottom bracket standard. Square taper is common on many entry-level and older bikes, while 104 BCD setups give you flexible chainring choices. If the crank and bottom bracket do not match, the build will not work correctly.

Chainring Size

Chainring size affects how hard the bike feels to pedal. Smaller rings help with climbing and technical terrain, while larger rings suit faster riding and smoother trails. For many trail riders, mid-size options offer the best balance.

Crank Arm Length

Most riders will be fine with 170mm arms, but shorter or taller riders may prefer a different length. Longer arms can add leverage, while shorter arms may improve clearance on rough trails.

Drivetrain Compatibility

If you are building a true 1x system, check whether the crankset is intended for single speed use or for 8/9/10/11-speed chains. Chainring profile matters for retention and shifting performance.

Materials and Durability

Alloy crank arms are common because they balance weight and strength. Look for solid machining, secure chainring bolts, and a design that can handle regular trail abuse without flexing excessively.

Who Should Buy Which 1x Crankset for Mountain Bike?

Budget riders and casual trail cyclists should usually choose a square taper 1x Crankset for Mountain Bike builds because it is simple and widely available. Riders who want easy gearing changes should look at 104 BCD options with multiple ring sizes. If you ride steeper terrain, a smaller chainring is often the smarter choice. If you want more speed on rolling terrain, move up a size. For the most hassle-free upgrade, match your existing bottom bracket, choose the chainring size that fits your terrain, and keep the setup as simple as possible.