I didn’t know that there are three variants of the B3 using different down tubes; twin, oval and round. All very complicated!
there were plenty of manufacturers (Dagger, Dean, Fat Chance, DeKeft, Litespeed, Bombproof, Mongoose (please keep them coming…)) using the B3 rear triangle BITD but did anyone use the B4 rear triangle? I’d like to know if the carbon rear triangle can be fitted to anything other than the B4. Thanks