Pro-Series Set for Bafang BBSHD – 40T Narrow Wide Chainring + Custom Motor Cover – Fits SRAM Eagle 12-Speed – No Cutting Require

Product Description

The Ultimate BBSHD Drivetrain Upgrade – No Motor Cover Cutting Required

Upgrade your Bafang BBSHD mid-drive e-bike with the Refully Pro-Series Set – a complete solution that combines a lightweight 40T Narrow Wide chainring, a custom-designed low-profile motor cover, and a 2mm offset spacer. No more grinding or cutting your stock motor cover – this kit fits perfectly out of the box (professional hydraulic tool required for installation).

What’s Included in the Kit?

⚠️ Installation note: Hydraulic tools (press) are required to install the motor cover. Professional installation recommended.

Key Features & Benefits

🔩 40T Narrow Wide Chainring – Optimized for 12-Speed SRAM Eagle

40T with 20mm offset – Smallest possible drive ring while maintaining correct chainline

Narrow-wide tooth profile – Superior chain retention, prevents chain drop

External chain guide ring – Extra chain security + protects pants from contact with chain

12-speed compatible – Works perfectly with SRAM Eagle chains (also fits 1–11 speed chains)

🛡️ Pro-Series Motor Cover – No Cutting Needed

Eliminates the need to trim 1mm off your original BBSHD cover

Direct replacement – lightweight, compact, and clean fit

Requires hydraulic press for installation – ensures perfect seal and alignment

⚙️ 2mm Offset Spacer Included

Use the spacer to achieve the standard BBSHD offset (18.3mm) when needed

Gives you flexibility to dial in your perfect chainline

🏗️ Premium Materials & Build Quality

Billet Aluminum 7075-T6 – Aviation-grade, high strength-to-weight ratio

CNC machined – Precise tolerances for smooth pedaling and shifting

Hard anodized finish – Durable, scratch-resistant, beautiful appearance

📉 Ultra Lightweight

Chainring weighs only 175 grams – nearly half the weight of the stock BBSHD chainring (340g)

Reduces rotating mass for faster acceleration and better climbing

Compatibility

Motor: Bafang BBSHD (mid-drive)

Chains:
1 to 11-speed chains – fully compatible

12-speed chains – only SRAM Eagle (not compatible with Shimano 12-speed or other 12-speed chains)

Frame: Works with most BBSHD-equipped bikes (check chainstay clearance for 40T)

Why Choose This Pro-Series Set?

Technical Specifications

Installation Notes

1.Motor cover installation requires a hydraulic press – do not attempt with hand tools or hammers.

2.Chainring bolts included – use supplied Allen key for final tightening.

3.For 12-speed SRAM Eagle chains only – other 12-speed chains will not work.

4.Verify chainline and clearance after installation.

Package Includes

1x 40T Narrow Wide Chainring (with external chain guide)

1x BBSHD Pro-Series Motor Cover

1x 2mm Thickness Ring Spacer

11x Stainless steel bolts

1x Allen key

Made in China – Precision engineered for Bafang BBSHD. Upgrade your ride today with the Refully Pro-Series Set.