A bike chainring designed to simplify drivetrains and improve chain security for off-road riding. Many riders will welcome fewer dropped chains and easier maintenance thanks to the narrow-wide tooth profile and CNC-machined aluminium. Is converting to a single-ring setup like UPANBIKE Bike Narrow Wide Chainring 104 BCD the right choice for your bike?
⚡ At a Glance
- • Build Quality: Upgraded solid 7075-T6 aluminium for high strength and low weight, with anodic oxidation finish
- • Best for: Riders converting to a 1x drivetrain who want reliable chain retention on rough trails
- • Not ideal for: Cyclists who need multi-chainring gearing or non-104BCD cranksets
Round narrow-wide single chainring in 104 BCD, available in 32T, 34T, 36T and 38T. CNC precision machining and anodic oxidation deliver a smooth, corrosion-resistant finish.
Fewer chain drops - thanks to the narrow-wide tooth profile
The narrow-wide tooth geometry increases the contact area between each tooth and the chain so teeth engage fully and hold the chain more securely. CNC machining preserves consistent tooth shape for reliable engagement.
Improved chain retention on bumpy trails and technical singletrack, reducing mid-ride chain drops and the need for guide devices.
Lighter, simpler drivetrain - with upgraded 7075-T6 aluminium construction
Solid 7075-T6 aluminium combines a high strength-to-weight ratio with precise CNC machining to remove excess material without compromising stiffness. Single-chainring conversion eliminates the extra hardware of a multi-ring system.
Converting to a single ring cuts drivetrain complexity and can reduce overall bike weight by at least 1kg, making climbs and accelerations feel snappier.
Durable finish and precise fit - with CNC machining and anodic oxidation electroplating
CNC precision machining yields smooth surfaces and consistent bolt interfaces, while anodic oxidation electroplating resists corrosion and keeps the finish bright. The no-sink screw design suits direct bolting to compatible cranks.
Long-lasting appearance and a solid, quiet fit on 104BCD cranks, with straightforward installation using compatible bolts.
✨ The 4 Key Reasons for UPANBIKE Bike Narrow Wide Chainring 104 BCD
- Narrow-wide tooth profile - Keeps the chain engaged on rough trails, reducing drops
- Single-ring conversion - Cuts drivetrain complexity and reduces weight by at least 1kg
- CNC-machined finish - Produces smooth, consistent tooth profiles for quieter pedalling
- 104BCD direct fit - Fits most cranks without extra hardware, enabling quick installation
📋 Technical Details at a Glance
- Category: Chainring, single-speed / 1x conversion
- Material: Upgraded solid 7075-T6 aluminium
- Tooth profile: Narrow-wide design
- Bolt Circle Diameter (BCD): 104 BCD
- Available sizes: 32T, 34T, 36T, 38T
❓ Frequently Asked Questions
Q: Will this chainring fit my 104BCD crank?
A: Yes, designed specifically for 104BCD cranks and built with a no-sink screw interface so original or compatible bolts can be used for direct mounting.
Q: Will the narrow-wide tooth reduce chain drops?
A: Yes, the narrow-wide geometry increases chain contact and grasp force, which reduces the likelihood of chain drops on bumpy terrain.
Q: Which tooth counts are available?
A: Available sizes are 32T, 34T, 36T and 38T, allowing riders to choose a gearing suited to their terrain and cadence.
🏆 Our Verdict
The UPANBIKE Bike Narrow Wide Chainring 104 BCD suits riders who want a simpler, lighter 1x drivetrain for off-road use. Narrow-wide teeth, 7075-T6 aluminium and CNC finishing combine to improve chain retention and deliver a precise, durable fit. Strong long-term value comes from reduced maintenance and reliable performance on rough trails.
