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My cbr 300 does not exceed 152 km / h. It's normal? If not how can I improve it?.
My bike mounts: bmc air filter and Leovince lv1 muffler
 

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My cbr 300 does not exceed 152 km / h. It's normal? If not how can I improve it?.
My bike mounts: bmc air filter and Leovince lv1 muffler
Hi Christian, it's not that unusual esp if you are a heavier rider? The engine is only a 286cc single cylinder with around 31HP.
You could try tucking down behind the fairing more if you want to go faster!
 

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Well I mean I guess you could do a +8mm bore kit and get it up to 350cc. Though I don't know if it's ever been done nor if you do it how long the engine will last with the bore kit. It's already stroked up from the CBR250 (+8mm stroke) so you won't be able to do a stroker kit on it.

EDIT: Turns out pretty much any BBK is a horrible idea: High compression kit for cbr/cb300?? not to mention the cost alone and the amount of work you have to do to get into the engine to install the BBK.

You're better off saving your kopeks and getting a Ninja 400 or RC390 or something than going any further than a filter and exhaust.
 

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My cbr 300 does not exceed 152 km / h. It's normal? If not how can I improve it?.
My bike mounts: bmc air filter and Leovince lv1 muffler
You probably bought the wrong bike friend.
 
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