ROTOR T47 Bottom Brackets (30mm axles)

Product Description ROTOR T4730 threaded bottom brackets are the new addition to our lineup. This bottom bracket fits any frame with a standard T47 bb shell, which has emerged among boutique frame builders as well as some of the big names (most notably on a significant portion of Trek's 2021 line). T47 is on its way to becoming our new favorite bb standard in the office, mostly because it leaves plenty of room for internal cable routing with a 30mm axle. As always, the bottom bracket cups are precision-machined in our Spanish manufacturing facility. T4730E uses external cups, measuring roughly 11.5mm outboard on each side. T4730I uses internal cups in which the only outboard piece is the castellated flange, which measures roughly 1.7mm on each side. T4730 Asymmetric utilizes one inboard and one outboard cup, primarily for threaded BBRight bottom brackets. Specs Weight  Steel, spring sleeve included 103 grams Ceramic, spring sleeve included 97 grams Frame compatibility T47 thre