Why performance mods might not be good for you

How much HP do you want?

• 1-5 : Exhaust pipe, intake and jet kit
• 3-8 : Porting, compression, cams
• 20+ : trade the Ninja 250 for a bigger bike.

The most economical of these is the trade. You can get a good used 600 or a superbike in fair condition for the price of a new 250.

However, if what you really want is to be able to go faster, then learn to ride better.