The Digirit Carbon Cog is a high-end full carbon rear cog designed for track bike and single speed drivetrain setups. It is made for riders who want lightweight performance, a refined drivetrain look and a precise custom build finish.
This cog uses full carbon one-piece construction and a special fiber layup to balance low weight, structural strength and tooth wear resistance. Compared with standard metal cogs, the carbon construction gives the drivetrain a more distinctive visual identity and a premium high-end appearance.
Digirit applies years of structural design and precision manufacturing experience to bicycle component development. Through its patented nano-powder process, the brand aims to improve tooth wear performance. Based in Taiwan, the team has long-term experience in high-end consumer electronics housing design, structural engineering and manufacturing problem solving, later extending these technologies into carbon chainrings, cogs and innovative bicycle components.
Digirit holds multiple machining patents and has received recognition from the 2018 TAIPEI CYCLE d&i Awards and the 2018 Golden Pin Design Award. Its carbon drivetrain parts have also been used in high-end racing and track bike setups, showing the brand’s technical capability in lightweight construction, strength and precision manufacturing.
This cog is available in 14T, 15T, 16T, 17T and 18T options. It uses a BC1.37 x 24TPI, 1/8" specification and is compatible with 1/2" x 1/8" chains. Digirit / Miche types are available. Installation requires the corresponding ADAP adapter base, so please confirm cog type, adapter base and hub compatibility before purchase or installation.
If you are looking for a Taiwan-made cog that combines low weight, strength, wear resistance and a premium carbon finish, the Digirit Carbon Cog is a standout option for single speed drivetrain upgrades.
⚠️ Please note: this product includes one carbon cog only. ADAP adapter base, lockring, chain, hub, wheelset and display props are not included.
⚠️ This product requires the corresponding ADAP adapter base. Please confirm and purchase the compatible adapter separately.
⚠️ Always use the proper tool when installing or removing the cog. Avoid using unsuitable tools such as standard wrenches, as they may damage the component.
⚠️ Use normal installation force only and avoid excessive force.
⚠️ Do not strike, drop or impact the cog from the side, as this may damage the carbon structure.
⚠️ Carbon drivetrain components affect riding safety. Professional installation, tightening and inspection are recommended.
Key Features
- Full carbon one-piece cog with lightweight premium appearance
- Special fiber layup for structural strength and riding stability
- Patented nano-powder process helps improve tooth wear performance
- Available in 14T–18T options for different gear ratio setups
- Compatible with 1/2" x 1/8" chains for common single speed drivetrains
- Digirit / Miche type options available
- Requires corresponding ADAP adapter base for installation
- Made in Taiwan with structural engineering and precision manufacturing expertise
Specifications
Brand: Digirit
Product Name: Carbon Cog
Material: Full Carbon Fiber
Color: Black, 3K Carbon Pattern
Specification: BC1.37 x 24TPI, 1/8"
Teeth: 14T / 15T / 16T / 17T / 18T
Chain Compatibility: 1/2" x 1/8"
Type: Digirit / Miche
Weight: Approx. 10g（17T）
Note: Requires corresponding ADAP adapter base, sold separately
Included: One Cog
Made in: Taiwan
