

Product Details
BBB Cycling E-BikeGear NarrowWide Steel Chainring 38T
Purpose-built for hub gear drivetrains, the E-bikeGear NarrowWide chainring offers strength and versatility. Suitable for Bosch Gen 3 and 4, Shimano Steps, and other 104mm BCD e-bike setups, it’s made from hardened steel to withstand heavy use. Compatible with 9–12-speed chains. For optimal fitting, pair it with our BCR-60 chainring bolts (sold separately).
Features:
- 4 arm E-bike chainring, BCD-104mm, for hub gear drivetrains.
- Compatible with Bosch(gen. 3 and gen. 4), Shimano Steps and other E-bike systems in combination with a BCD 104mm spider.
- Compatible with 9-12 speed chains.
- Made from hardened steel for an extra long lifetime.
- Chainring bolts not included (advised to use BCR-60).
Specification:
- Sizes: 38T (182g)
- Crankset type: Single
- Gears: 9-speed, 10-speed, 11-speed, 12-speed
- Arm quantity: 4 arm crankset
- Bolt Circle Diameter (mm): 104
- Compatible with: Derailleur drivetrains
- Part materials: Carbon steel
What Sets Alchemy Apart
The best pre-owned bikes
When you buy a pre-owned bike from Alchemy Cycle Trader, you’re getting more than just a great deal. Every bike is roadworthy certified, comes with a 3-month warranty, and includes your first service free - so you can ride away with complete confidence.
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Learn more about our carbon testing.
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Our professional workshop team is here to keep your bike running at its best long after you’ve taken it home. From routine servicing to performance tuning, our qualified mechanics ensure your ride stays smooth, safe, and ready for every adventure. Whether it’s your first free service or future maintenance, you can count on Alchemy Cycle Trader for trusted support and expert care. Learn more about our workshop services.