Originally Posted by Turbo DV8
Thinking I'd like to try a 15T in front, but steel, not aluminum. I've only seen references to aluminum, and my local dealer dude says he searched and could not find a 15T in steel for the CBR250. Does anyone have knowledge of a 15T in steel for our bike? Thanks.
You should have no problem finding a 15T steel sprocket... brands like JT Sprockets, Renthal, SunStar all make them.
I'm thinking you (and the local 'dealer dude') have gotten some misinformation along the way regarding motorcycle sprockets. I've never seen or heard of an aluminum front sprocket
used on any bike... front sprockets are always made of hardened steel. Aluminum simply would not hold up to the torque being generated at the transmission output shaft... the sprocket teeth would become bent over in very short order.
That said, rear sprockets can be had in both steel and aluminum. For off-road bike applications, rear sprockets are typically made out of aluminum, whereas street bikes almost always use hardened steel for the rear sprocket (track/road racing applications would be the exception).