SEIDO TRAC Bottom Bracket - T47 - 85.5-86.5 | Internal - black

SEIDO TRAC T47 BBs are machined to precision with the highest quality aluminum and bearings. They will fit 30 mm spindle cranks with the included washers, or can be fitted with SEIDO adapter kits to accept other crankset spindle standards. The BB sleeve has been designed to leave room for internal cable routing. Servicing or replacing bearings is an easy job thanks to easily accessible bearing races, even when fitted to the frame.

Outer seals provide extra protection for the already double-sealed bearings.

TRAC version – featuring a Twin Row Angular Contact (TRAC) bearing, these bottom brackets are built to last. By adding a second row of balls in just a 10mm wide bearing unit the load capacity and stiffness is drastically increased.