Installation instructions - International Maintenance and care of your SIGMA product How do I switch my bike computer from km/h to mph? Download Sigma Sport Bc 401 Manual - EPSS Sport Bc 401 Manual download Document about Sigma Sport Bc 401 Manual Download is available on print and digitalFree download of your Sigma Sport Bc 401 User Manual. Still need help after reading the user manual? Post your question in our forums. View online or download PDF (1 MB) SIGMA SPORT BC401 Owner's manual • BC401 bicycle accessories PDF manual download and more SIGMA SPORT online manuals. Manual for Sigma BC 401 Cycling Computer. View and download the pdf, find answers to frequently asked questions and read feedback from users. View and Download SIGMA SPORT BC 401 manual online. BC 401 bicycle accessories pdf manual download. Sigma Sport Bc 401 Manual download Document about Sigma Sport Bc 401 Manual Download is available on print and digital edition.