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Cycling component designed to improve chain retention and compatibility across a wide range of drivetrains. Enjoy fewer dropped chains and a more confident ride when tackling rough trails or busy roads, thanks to the FOMTOR 104 BCD Chainring. Is it the right upgrade for your crankset and gearing needs?
⚡ At a Glance
- • Build Material: 7075 aluminium for strong, lightweight construction
- • Best for: Cyclists fitting 104mm BCD cranks who want reliable chain retention
- • Not ideal for: Cranksets that do not use a 104mm 4-bolt pattern
Narrow-wide tooth profile improves chain retention and reduces the chance of drops. Compatible with 7-12-speed drivetrains and supplied with four chainring bolts for 104mm BCD 4-bolt cranksets.
Fewer chain drops, thanks to narrow-wide tooth pattern
Narrow-wide tooth pattern holds the chain more securely, reducing the likelihood of drops during bumpy or technical riding. Compatibility notes specify suitability across 7-12-speed drivetrains.
Riders experience greater confidence on rough terrain and mixed-surface routes, with fewer interruptions from dropped chains.
Strong yet light, with 7075 aluminium construction
7075 aluminium is specified for its high strength relative to mass, ensuring durability without unnecessary weight. The description emphasises strength while keeping added mass low.
Reduced rotating weight supports a more responsive pedalling feel while maintaining robust construction for regular use.
Flexible gearing choices, with multiple 30T to 52T size options
Multiple size options cover tooth counts from 30T up to 52T, enabling selection to suit climbing, cruising, or mixed-terrain riding. Designed to match different gear ratio needs.
Allows tailored gearing setups for personal riding style, whether preferring easier climbs or higher top-end speed without swapping additional drivetrain parts.
✨ The 4 Key Reasons for FOMTOR 104 BCD Chainring
- Multiple Size Options - Match gearing between 30T and 52T for precise cadence control
- Narrow-Wide Tooth Pattern - Reduce chain drops when riding rough terrain for reliability
- 7075 Aluminium Construction - Lower rotating weight improves acceleration and responsiveness on climbs
- Includes Chainring Bolts - Allows quick swaps with 4-bolt 104mm BCD cranksets
📋 Technical Details at a Glance
- Material: 7075 aluminium
- Bolt Circle Diameter (BCD): 104mm
- Tooth Count Options: 30T to 52T
- Compatible Speeds: 7-12 speed
- Bolt Pattern: 4-bolt cranksets
❓ Frequently Asked Questions
Q: Will this fit my crankset?
A: Compatible with 104mm BCD cranksets that use a 4-bolt pattern, and four chainring bolts are included for installation.
Q: Which drivetrains are supported?
A: Fits 7-12-speed drivetrains according to the product description.
Q: What material is the chainring made from?
A: Made from 7075 aluminium, described as strong and lightweight.
🏆 Our Verdict
The chainring suits cyclists who want dependable chain retention and versatile gearing options for MTB, road, or e-bike use. A narrow-wide tooth profile combined with 7075 aluminium delivers secure engagement and a durable, lightweight construction. These attributes make the chainring a practical, long-lasting upgrade for riders focused on reliability and compatibility.
