Best Bike Cranksets for Mountain Biking (2026)
We selected cranksets by compatibility (BCD and spindle), available chainring sizes and profiles, crank length options, and overall value for mountain-biking use
The Verdict
- Best Overall: BUCKLOS 170mm MTB Crankset with 104BCD chainrings — Best budget fit: 104 BCD and 170mm length give simple compatibility and basic trail utility
This roundup covers cranksets suited for mountain biking, ranked by fit (crank length and chainring options) and value. Picks were chosen by assessing compatibility (BCD and spindle type), drivetrain features (narrow-wide rings, tooth counts), and overall price-to-feature balance
Top Picks
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1
Best Overall BUCKLOS 170mm MTB Crankset with 104BCD chainrings
Best budget fit: 104 BCD and 170mm length give simple compatibility and basic trail utility
BUCKLOS crankset for mountain/commuter/e-bike bikes with 104 BCD, available in 32/34/36/38/40/42T. Lightweight and durable with 609g weight. One customer notes improved performance with oval chainring
- 104 BCD ultralight crankset
- available in multiple chainring sizes
- suitable for various bike types
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2
BUCKLOS MTB Crankset 170mm 104BCD with 32/34/36/38/40/42T rings
Best for customizable gearing: 104 BCD with multiple ring size options lets you tailor gearing to terrain
Bucklos 170mm crankset with 104BCD offers lightweight durability for mountain, commuter, and electric bikes. Features round/oval chainrings and multiple tooth options for versatile gearing
- 104 BCD ultralight crankset
- multiple chainring sizes
- fits ebike/commuter bikes
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3
BUCKLOS MTB crankset 170mm 30-52T with narrow-wide ring
Best for single-ring setups: 170mm crank with narrow-wide 30–52T pairing improves chain retention on rough trails
BUCKLOS IXF 104 BCD crankset for mountain bikes with hollow integrated design and 170mm length. Delivers solid build, easy installation, and good value. Customer note: solid fit and upgrade for older OEM cranks
- hollow integrated design
- narrow-wide chainring option
- 170mm crank length
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4
BUCKLOS 104 BCD 30T-38T MTB Crankset 170mm with BB
Best integrated package: 170mm crank with narrow-wide ring and included BB simplifies installation and fit
Mountain bike crankset with 170mm arms, 74mm BCD, 30-38T options, and aluminum alloy construction. Features narrow-wide chainring design for smooth shifting and easy installation. Users note fit, quality, and value for money
- narrow-wide chainring option
- 170mm crank length
- 74mm crank bolts/BCD compatibility
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5
BUCKLOS IXF 104 BCD Crankset 170mm MTB 30-52T
Best for wide-range gearing: 170mm crank with 30–52T capability suits riders wanting large gear range on varied terrain
Hollow integrated MTB crankset with narrow-wide chainring for 170mm setup. Solid build and easy to install with good fit and value, per customer feedback
- narrow-wide chainring for reliability
- 170mm crank length
- aluminum alloy construction