I own both..

I prefer the Collari but you must figure in the cost of their pipe and header. The Collari has a smaller size exhaust port and you will have problems if you try and use a regular exhaust header. It will develop leaks and cause it to be hard to tune and start. I like the Collari because it has buckets of lowend torque.


The OS .30 does not have much lowend. It will not make my either of my LST's wheelie. It has more bark than bite.