A very rare, and after-market item only. You would probably be better off going for a smaller rear sprocket.

It's also easy to damage the crankcase running a 16T front.
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

Check us out on Facebook! Please "like" our page!