BROMPTON Piñon set incl disco 3/32' 9-spline - 13T (BWR as a 3-spd)
https://www.bike-tech.com/shop/q101614-brompton-pinon-set-incl-disco-3-32-9-spline-13t-bwr-as-a-3-spd-10643
https://www.bike-tech.com/web/image/product.template/10643/image_1920?unique=9308331
Pinyo 13T per muntatge en boixa BWR
