Park Tool BBT-RS Bottom Bracket Tool Retaining System 31.6mm x 20mm offset tapered nose-to-wing transition

tapered nose-to-wing transition

The SHIMANO GRX 12-speed rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain management during rough rides

A key accessory for chilly starts or changeable weather

Silicone grip maintains security when your hoods are slippery with rain and road spray

Formulated to work without solvents or abrasive chemicals

Park Tool BBT-RS Bottom Bracket Tool Retaining System 31.6mm x 20mm offset tapered nose-to-wing transitionBottom brackets have some of the highest torque specs of any component found on a bicycle. Despite this, some bottom bracket cups feature tool fittings that allow mere millimeters of engagement, which can be a problem when attempting removal or installation. Solution: the Park Tool Bottom Bracket Tool Retaining System. Used in conjunction with nearly any Park Tool bottom bracket tool, the BBT RS uses a spring based tension system to apply consistent,