who did your motox porting?  is it tuned for an 8000- 8600rpm powerband? i cant find any videos of the dynoport pipe on a 250. 

perhaps there is a pipe im forgeting but the shearer=Q.  Shearer makes custom pipes so you can ask for something a little different..... but the shearer is a good happy medium between torque and powerband.

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the pipes that come on smooth and soft at 4000-5000rpm put me to sleep. the shearer has a great clutch dump at 4000-5000 so it makes everyone pretty happy.....yes its big too! 

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jerry has nothing for the 250.

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its to bad dynoport does not have a rev pipe with a solid 4000-5000rpm clutch dump. its a great modern design just like the ftz but its tuned 1000rpm lower..... holler at them..... that thing rips on ported cylinders too! the competition will be thinking twice about their 400 pound 450 that are no faster. in fact they mimicked the output of a sport tuned 250 and added weight and throttle responce.

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 did i mention i have a diploma for this stuff?