The 104 BCD Narrow Wide Chainring is a performance-focused drivetrain component designed for cyclists who want improved chain retention, efficient power transfer and a lightweight 1x drivetrain setup. Manufactured from machined 7075-T6 aluminum, it combines high strength, low weight and precise tooth profiling for dependable use on compatible mountain bikes and performance bicycles.
Its 104mm BCD mounting standard makes it suitable for a wide range of compatible cranksets, while the narrow-wide tooth pattern is specifically engineered to help keep the chain engaged securely during rough riding. This makes the chainring particularly useful for MTB, trail, XC and aggressive off-road applications where chain movement and vibration can be significant.
Narrow-Wide Tooth Technology
The alternating narrow and wide tooth profile is designed to match the inner and outer links of the bicycle chain more closely.
This creates better chain engagement and improves retention, helping reduce the risk of chain drops during:
Rough trail sections
High-speed descents
Technical climbs
Bumpy roads
Sudden cadence changes
Aggressive pedalling
For riders converting to a 1x drivetrain, this design provides a cleaner and simpler setup by eliminating the need for a front derailleur while maintaining secure chain control.
7075-T6 Aluminum Construction
The chainring is CNC-machined from 7075-T6 aluminum, a high-strength alloy widely used in performance cycling components.
This material offers:
Excellent stiffness
High fatigue resistance
Low overall weight
Strong resistance to deformation
Reliable performance under pedalling load
Compared with heavier steel chainrings, 7075-T6 aluminum provides a more weight-efficient solution while still delivering the structural strength needed for demanding riding.
Precision Machining
The machined construction helps create accurate tooth geometry and consistent chain engagement. Precise profiling is important for reducing unnecessary drivetrain noise and ensuring smooth interaction between the chain and chainring.
This makes the 104 BCD Narrow Wide Chainring suitable for riders who want a refined mechanical feel and consistent power delivery.
9 / 10 / 11-Speed Compatibility
The chainring is designed for use with compatible 9-speed, 10-speed and 11-speed drivetrains, giving riders flexibility across a wide range of mountain bike transmission systems.
It can be used when upgrading an existing setup or when converting a compatible crankset to a simplified 1x drivetrain.
Multiple Tooth Options
The chainring is available in:
30T / 32T / 34T / 36T / 38T
Each size allows riders to fine-tune gearing according to terrain and riding style.
30T: Excellent for steep climbs and technical trails
32T: Balanced climbing and general MTB use
34T: Versatile option for mixed terrain
36T: Better suited to faster riding
38T: Ideal for flatter terrain and higher-speed setups
Anodized Surface Finish
The chainring features an anodized finish, helping improve resistance to corrosion, scratches and general wear while giving the component a premium appearance.
Available in Black and Red, it can also be used as a visual upgrade to complement the bike’s frame, crankset or other components.
Advanced Features
104 BCD mounting standard
Narrow-wide tooth profile
Designed for compatible 1x drivetrains
CNC-machined construction
High-strength 7075-T6 aluminum
Lightweight performance design
Improved chain retention
Efficient pedalling power transfer
Compatible with 9 / 10 / 11-speed systems
Multiple tooth options
Anodized protective finish
Available in Black and Red
Suitable for MTB, XC and trail riding
Ideal for drivetrain upgrades and conversions
Technical Specifications
Brand: CHOOEE
Model: CHW30T
Product Type: Narrow Wide Chainring
Material: Machined 7075-T6 Aluminum
BCD: 104mm
Tooth Options: 30T / 32T / 34T / 36T / 38T
Speed Compatibility: 9 / 10 / 11 Speed
Drivetrain Type: Compatible 1x Setup
Finish: Anodized
Colour Options: Black / Red
Primary Benefit: Lightweight, durable and secure chain retention
