BSA30 are rarely delivered with tunnels.
This product is manufactured in France by CyclingCeramic and here are the main features:
-improved waterproof qualities: bearings are protected from water coming from the inside of the frame. At the same time it eliminates the risk of sand contamination coming from water projections.
-protection of the axle: the axle cannot touch cables/brake parts
This BB is available in red and black. It's also available for DUB and Shimano.
This is a popular product because you can build a Tarmac SL7 & 8 with Rotor Aldhu Carbon crankset, which is one of the lightest crank on the market.
www.velo-perso.com/en/rotor-a...
#cyclingceramic #BSA #iamspecialized #rotorbike