Originally Posted by planenut
Originally Posted by LightSpeed
What year did they switch away from aluminum to steel or is it the other way around?


The steel rear sprocket replaced the anodised alloy in early 2015. The alloy sprockets only had a life of about 3 - 6,000 miles, although the kevlar drive belts seem to last for ever.


Mine was changed to steel at 6400 miles. The aluminium one used to lead to masses of black dust in the cockpit even though I had done my best to seal gaps behind the seats. Not so with steel one.