Shimano Bearing Set BSA bottom bracket MTB Hollowtech II for Deore SM BB51 / BB52 by Shimano
Amazon.com: JKSPOTRS ShimanoAlivio BB51 BB52 SM-BB51 SM-BB52 Deore/Alivio Hollowtech II - Soporte inferior para bicicleta de montaña : Deportes y Actividades al Aire Libre