SHELL DIAMETER | 1.37”
SHELL LENGTH | 68 mm for Birdy
SPINDLE DIAMETER | 24 mm
Birdy Folding Bike Use Only
G5 Ceramic Bearing
Double Ceramic Bearings Drive Design
Bottom Bracket (B.B.) is always an essential component. A set of highly effective and smooth B.B. plays a main role in increasing pedaling performance and efficiency. CRODER® B.B. series are all produced with high-precision full CNC process and also integrates new technology to improve the performance and competitiveness.
CRODER® Birdy BSA B.B. has 5 characteristics which are:
→ Designed for Birdy Folding Bike to Install 2X Chainring
→ G5 Ceramic Bearings with Black Oxide
→ Double Ceramic Bearings Drive Design
→ 3 Ceramic Bearings Inside
→ More smoothy & More Durable
G5 Ceramic Bearings: The ceramic bearings are made of G5 Si3N4 ceramic balls and they are also made in Taiwan. The weight of ceramic bearings is 40% lighter than the weight of steel bearings. Besides, ceramic bearings can provide better protection with wear and rust. It also has an anti-corrosion function that makes bearings more durable.