12mm Offset 7075 Aluminum Chainring for Bafang BBSHD / BBS03 / M625 Mid‑Drive Motor This precision‑engineered offset chainring is purpose‑built for Bafang BBSHD, BBS03 and M625 mid‑drive motors. It achieves seamless integration with your e‑bike conversion setup, delivers accurate chainline alignment and optimizes overall drivetrain efficiency for reliable daily riding.

This precision‑engineered offset chainring is purpose‑built for Bafang BBSHD, BBS03 and M625 mid‑drive motors. It achieves seamless integration with your e‑bike conversion setup, delivers accurate chainline alignment and optimizes overall drivetrain efficiency for reliable daily riding.

✅ Bafang BBSHD Mid‑Drive Motor

✅ Bafang BBS03 Mid‑Drive Motor

✅ Bafang M625 Mid‑Drive Motor

✅ Fits 7 / 8 / 9 /10 /11 /12‑speed bicycle chains

✅ Perfect Fit for Bafang BBSHD & M625 Motors

Custom‑designed for Bafang BBSHD, BBS03 and M625 mid‑drive motors. Matches original mounting geometry for seamless installation and stable performance for e‑bike conversion projects.

✅ Multiple Tooth‑Count Selections

Available in 32T, 34T, 36T and 38T options. Pick the suitable tooth size to match your riding style and target gear ratio, realizing efficient power transfer and smooth acceleration for commuting, climbing or mixed‑terrain riding.

✅ 12 mm Offset for Accurate Chainline

Built‑in 12 mm offset chainwheel design optimizes drivetrain chainline alignment. Reduces abnormal friction and premature component wear, improves overall drivetrain efficiency and extends service life of chain and cassette.

✅ Wide Compatibility for Modern Drivetrains

Works flawlessly with 7‑ to 12‑speed chains. Great versatility for most modern e‑bike drivetrain systems, convenient for replacement and upgrade of conversion‑kit builds.

✅ Premium 7075 Aluminum Alloy Construction

Made of high‑grade 7075 aluminum alloy. Surface treated with sandblasting plus hard anodizing (approx.120‑mesh surface roughness). Light‑weight yet rigid, weight ranges from 98g‑116g depending on tooth count, anti‑corrosion and wear‑resistant for long‑term outdoor use.

Product Name: 12mm Offset E‑Bike Chainring / Chainwheel

Material: 7075 Aluminum Alloy

Offset: 12 mm

Color: Black

Tooth Options: 32T, 34T, 36T, 38T

Chain Compatibility: 7/8/9/10/11/12‑speed chain

Surface Treatment: Sandblasting + Anodizing

Surface Roughness: Approx.120 mesh

Net Weight: 98g‑116g (varies by teeth quantity)

Fit Motor: Bafang BBSHD, BBS03, M625 mid‑drive motor

1 × Chainring (selected tooth count)

Please double‑check your mid‑drive motor model and select correct tooth number before placing order.

Minor color difference may occur due to lighting and screen display.

Only the chainring is included; cranks, chain, motor and other drivetrain accessories shown in reference pictures are not contained in package.