Yes mine made the 67hp and on the road it was very good. To get this the cases were all matched and the barrels had some porting work done to them along with machining the heads to get a different squish band shape. I also had some reed cages made which made nearly 1.5hp so 65hp from a bolt on kit is pretty good.

However after a track day it has now died so i may go back to a 250 providing i can find a decent top end!
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MC21 300
Aprilia RS250 track bike