Facebook Twitter LinkedIn Pinterest Bluesky Threads Hi. I got this special left crank arm from a Kettler exercise bike. (The black one) I need a new one, but i can’t find it anywhere. The axelhole is 16.8mm. Writing on the back “Miranda 4 R 17” Need help plz. by Consistent-Leader-37 Bicycling Bike Bike Repair Biking Cycling Repair