Adaptateur de Boîtier de Pédalier TRUVATIV BB30 68 mm BSA 68 73 mm SOFT isolant 5" IS42 IS52 BAA1117K is a Newsoft 5" IS42 IS52 BAA1117K is a specific model from the American manufacturer designed to reduce the height of your headset and thus your cockpit without compromising performance inspired by the all terrain XTR Di2 model: the action on the left control alone automatically adjusts the sprocket selection on the cassette this very easy to install adapter comes as a complete kit to suit all situations The SRAM BB30 68 mm to BSA bottom bracket adapter allows the use of 68 or 73 mm English threaded bottom brackets with spacers on frames originally designed for 68 mm BB30 bottom brackets