Wide Compatibility – Fit Multiple E-Bike Types

This premium BAFANG chain sprocket disc is professionally engineered to pair flawlessly with electric bikes fitted with BAFANG BBS01B and BBS02B mid-drive motors. In addition to core motor compatibility, it supports a wide range of e-bike styles for versatile use. Specifically, it fits fat tire mountain e-bikes, recumbent electric bicycles, and most mainstream mid-motor conversion e-bikes on the market. Since it installs perfectly at the crank sprocket wheel position, this single chainring serves as an excellent OEM replacement and performance upgrade for your entire e-bike drivetrain system.

Anti Chain Drop Design – Stable Off-Road Riding

Equipped with an integrated full chain guard cover, this BBS chainring solves one of the most common off-road riding issues. It effectively blocks chain slippage and accidental drops while traveling over rough mountain trails, bumpy dirt roads, and uneven terrain. As a result, you will no longer face frequent chain derailment during steep climbing or fast downhill rides. This thoughtful design greatly boosts overall riding stability and cuts down daily bike maintenance troubles.

2 Core Popular Sizes: 44T & 46T for BAFANG Mid Motor

44T Chainring: Outer diameter 7.1″ / 18.3cm, perfect for flat road commuting and light climbing

46T Chainring: Outer diameter 7.5″ / 19.2cm, delivers higher top speed for highway & mountain cycling

Both sizes match BAFANG BBS01B / BBS02B mid drive motor perfectly, easy direct bolt-on replacement without frame modification.

Complete Size Lineup – 44T / 46T / 48T / 52T Optional

To meet most daily riding and upgrade needs, we provide two eyond the core sizes, a full selection of chainring specifications is available to adapt to diverse riding scenarios.

The 44T, 46T and 48T models all feature a standard 9mm offset for stable installation. In contrast, the 52T chainring adopts a slightly adjusted 8.6mm offset for optimized chainline.

Every chainring comes paired with a matched black chain guard plate. Therefore, riders can freely choose small-tooth versions for stronger climbing torque or large-tooth versions for faster flat-road speed based on personal needs.

Clear Size Reference Chart for Quick Selection

Quick check outer diameter for each tooth model:

44T: 7.1 inch

46T: 7.5 inch

48T: 7.8 inch

52T: 8.5 inch

Standard mounting hole pattern compatible with all original BAFANG BBS mid motor cranksets, no adapter needed.

46T One-Piece Chainring Detailed Specs

Outer Diameter: Φ7.36″ (18.7cm)

Thickness: 16.5mm

Compatible with all electric bicycles supporting up to 9-speed rear cassettes, smooth chain movement without friction or jamming, durable one-piece aluminum structure resists bending and deformation.

44T Chainring Installation Dimension Guide

Single chainring thickness: 6.5mm

Offset: 6.5mm

Total assembly width: 34mm

Outer diameter: Φ7.1″ (18cm)

All offset data is pre-calibrated to avoid frame or tire collision, direct installation without grinding or spacer adjustment, fully compatible with 9-speed drivetrain systems.

After-Sales Notice

1. Please confirm your motor model is BAFANG BBS01B / BBS02B before ordering
2. Select smaller tooth (44T/46T) for hill climbing; pick larger tooth (48T/52T) for faster flat road riding
3. All chainrings are tested for precise size, if you meet installation problems, contact our customer service for technical support