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42T Narrow‑Wide Aluminum Chainring for Bafang BBS01 BBS02 G340 Mid‑Drive Motor, 6061‑T6 CNC Machined Anti‑Drop Chain Ebike Chain Ring
42T Narrow‑Wide Aluminum Chainring for Bafang BBS01 BBS02 G340 Mid‑Drive Motor, 6061‑T6 CNC Machined Anti‑Drop Chain Ebike Chain Ring - Image 2
42T Narrow‑Wide Aluminum Chainring for Bafang BBS01 BBS02 G340 Mid‑Drive Motor, 6061‑T6 CNC Machined Anti‑Drop Chain Ebike Chain Ring - Image 3
42T Narrow‑Wide Aluminum Chainring for Bafang BBS01 BBS02 G340 Mid‑Drive Motor, 6061‑T6 CNC Machined Anti‑Drop Chain Ebike Chain Ring - Image 4

42T Narrow‑Wide Aluminum Chainring for Bafang BBS01 BBS02 G340 Mid‑Drive Motor, 6061‑T6 CNC Machined Anti‑Drop Chain Ebike Chain Ring

42T narrow‑wide aluminum chainring for Bafang BBS01, BBS02, G340 mid‑drive motors. CNC‑machined 6061‑T6 alloy, anti‑drop alternating wide‑narrow teeth, reliable for off‑road and rough terrain ebike riding.

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42T Narrow‑Wide Aluminum Chainring for Bafang BBS01 BBS02 G340 Mid‑Drive Motor

This 42T narrow‑wide aluminum chainring is purpose‑built for Bafang BBS01, BBS02 and G340 mid‑drive motors. It delivers outstanding compatibility and stable performance for your electric bicycle drivetrain system, with proven anti‑drop‑chain performance even under bumpy off‑road conditions.

Compatibility

✅ Bafang Mid‑Drive Motors: BBS01, BBS02, G340

Precise Specifications

ParameterValue
Product Name42T Narrow‑Wide Chainring
Teeth Count42T
Material6061‑T6 Aluminum Alloy
ProcessCNC Machined
FeatureAlternating narrow‑wide teeth, anti‑chain‑drop

Package Includes

1 × 42T Narrow‑Wide Aluminum Chainring

Key Features

✅ Perfect Motor Fit: Specially designed for Bafang BBS01, BBS02 and G340 mid‑drive motors, ensures great matching and optimal drivetrain performance.
✅ Narrow‑Wide Anti‑Drop‑Chain Design: Alternating wide and narrow tooth profile firmly holds the bicycle chain, effectively avoids chain dropping when riding on rough, bumpy terrain.
✅ Premium 6061‑T6 Aluminum Alloy: High‑strength lightweight aluminium material balances strength and weight for long‑time heavy‑duty ebike usage.
✅ Precision CNC Machining: Strict CNC manufacturing guarantees accurate tooth geometry and smooth chain engagement for quiet, efficient power transfer.
✅ Ideal For DIY & Workshop Use: Excellent upgrade or replacement component for ebike DIY enthusiasts and professional repair mechanics.

Specifications

Brand: Aftermarket spare part

Product Name: 42T Narrow‑Wide Aluminum Chainring

Teeth: 42T

Material: 6061‑T6 Aluminum Alloy

Processing: CNC Machined

Compatible Motors: Bafang BBS01, BBS02, G340 mid‑drive motor

Feature: Anti‑drop‑chain narrow‑wide teeth

Color: As shown in the picture

Package:1 × 42T Narrow‑Wide Aluminum Chainring

Important Notes

Please confirm your motor model is BBS01 / BBS02 / G340 before placing your order to avoid incompatibility.
Minor color differences may appear due to lighting conditions and screen display variations.
Only items listed in packing list are included; other accessories shown on reference photos are not contained.
Great drivetrain upgrade spare for ebike repair shops, DIY builders and wholesale distributors.
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We specialize in mid-drive motors and e-bike parts. Strict testing, powerful R&D and flexible OEM service guarantee long-term cooperation.

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It used to take me weeks to hunt down hard‑to‑find e‑bike spare parts. Their compatibility‑check technical support saved me countless repair headaches. Reliable supplier I can always count on.

Mark Wilson Repair Technician

Flexible mixed‑batch ordering is a game‑changer for my business. Low‑risk trial‑order options, fast delivery and solid OEM‑ODM service help me expand my product range with zero inventory pressure.

Jennifer Carter Wholesale

We have been sourcing e‑bike components from them for over one year. Product quality is consistent, and their responsive after‑sales support makes our daily shop‑running much easier. Highly recommended.

Ryan Thompson ebike shop owner

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For more FAQs and further details, please get in touch with us

faqs

Frequently Asked Questions

We supply genuine OEM parts and premium compatible aftermarket replacement parts for e-bikes, including motor components, controllers, throttles, PAS sensors, wiring harnesses, connectors and Bosch form-factor batteries.

We serve mainstream drive system manufacturers: Ananda, Bafang, Aikema, Tongsheng, Shengyi, Bosch and more. We also provide repair components for complete e-bike brands including Sur‑Ron, Aventon, Trek and many others.

All items are brand-new and inspected before shipment. We do not supply second-hand or refurbished goods.

Our team verifies compatibility according to your bike model, motor info or original part photos. We confirm available OEM parts or recommend workable alternative solutions.

Yes. Flexible order sizes are supported, ranging from single spare parts to bulk purchases.

Sea freight, air freight and rail transport are optional.

Lead time varies by item and shipping mode. We confirm exact timelines before each order and share tracking updates.

We provide part identification, model matching and full order follow-up support.