Park Tool

BTS-1 English Bottom Bracket Taps, Facer and Handle Set

The Park BTS-1 is one of the most expensive bike tools on the market and can ruin the most expensive frame out there without blinking an eye. When used properly this tool will make the shell of the bottom bracket square so that outboard bearing bottom brackets such as Shimano's HollowTech II and Campagnolo's Ultra Torque will work properly. By not having the face of the bottom bracket shell square uneven load is placed on the bearing resulting in premature bearing wear, not something you want to have happen on that new $300 ceramic bottom bracket. The Park BTS-1 also chases the threads of English bottom brackets (optional Italian taps are available) which is great for removing excess paint from the threads. We also use it on older frames that get rusty or if the bottom bracket get contaminated with sand. To prolong cutting head life we always use a cutting fluid such as Park's CF-2