BUCKLOS IXF 104 BCD 30T-38T 170mm Mountain Bike Crankset - Durable

In this review of the BUCKLOS IXF 104 BCD crankset the bottom line is straightforward: this kit is a good-value, lightweight replacement for riders who want a reliable single-speed crankset that is also compatible with common drivetrains. The reviewer found the aluminum construction and 170mm crank arms give a solid feel and smooth pedaling, while the narrow-wide chainring helps retain chain engagement for 7-12S use. Installation was noted as straightforward and the set fits common Shimano and FSA frameworks, making it a practical choice for recreational and trail riders.

Key Features

• Aluminum alloy construction: A light but stiff build keeps crank weight down (about 550g) while providing good axial strength for climbing and trail riding.
• Narrow-wide chainring profile: The snail single-speed narrow wide teeth design improves chain retention for single-speed setups and mixed gearing from 7-12S chains.
• Multiple chainring options: Available in 30T, 32T, 34T, 36T and 38T in round or oval shapes so riders can tune cadence and gearing for different terrain.
• 170mm crank arm length: The 170mm arms suit a wide range of riders and provide predictable leverage for both climbs and flats.
• Bottom bracket compatibility: The BB spindle size of 41x24x24 mm fits frames with 68-73mm shell widths and is compatible with Shimano and FSA interfaces.

Who It's For

This crankset is best for mountain bikers who ride recreationally or on moderate trails and who want a lightweight, straightforward replacement or upgrade that is compatible with Shimano, SRAM and FSA systems. Riders running single-speed conversions or simplified drivetrains will particularly benefit from the narrow-wide chainring and the range of tooth counts available for tuning gear ratio.

It is less appropriate for riders who need fully serviceable, high-end race-level components or for those who require multi-speed chainring shifting on a front derailleur as the set is intended for single-speed use. Riders prioritizing extreme chainring durability under heavy use should weigh mixed feedback about chain ring durability.

Pros & Cons

Pros

• Lightweight aluminum crank and chainring combine low weight with good stiffness for trail use.
• Narrow-wide tooth profile increases chain retention in single-speed setups and reduces chain drop.
• Easy to install and compatible with common Shimano, SRAM and FSA systems and common frame BB widths.
• Multiple tooth counts and oval/round options let riders tune gearing for their preferences.

Cons

• Chain ring durability received mixed reports from users, with some noting broken teeth under use.
• Designed only for single-speed setups, so it is not suitable for riders who need front shifting functionality.

Specifications

Brand	BUCKLOS
Crank arm length	170mm
BCD	104 BCD
Chainring options	30T / 32T / 34T / 36T / 38T (round or oval)
Chain compatibility	7-12S chains, single/double/triple speed chainring use
Bottom bracket size	41x24x24 mm (fits 68-73mm shell)
Weight	Approx. 550g

Our Verdict

The BUCKLOS IXF 104 BCD crankset is a practical, affordable option for mountain bikers who want a lightweight, compatible crank and narrow-wide chainring for single-speed or simplified drivetrains. It delivers good performance and easy installation for recreational trail use, though riders who demand maximum chainring longevity or front shifting should consider other options.

Frequently Asked Questions

Will this fit my Shimano frame?
Yes, the bottom bracket spindle size and the 68-73mm shell compatibility make it suitable for most Shimano and FSA setups.

Can I use this with a 9-speed chain?
Yes, the chainring is compatible with 7-12S chains so a 9-speed chain will work.

Is this crankset suitable for double or triple chainrings?
The crankset is designed for single-speed use; while the chainring notes compatibility with single/double/triple speed chainrings, the kit itself is intended for single-speed setups and not front shifting systems.