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It looks like the Ninja 400 has been confirmed for participation in this years CSBK Amateur Lightweight Sport Bike Series, albeit with some specific restrictions on modifications. The new Ninja 400 will be required to compete using the stock exhaust header pipe and catalytic converter, although an aftermarket slip on tail pipe/end can will be permitted. A full race exhaust, allowed for other machines in the class, will not be permitted. The Ninja will also be required to utilize a provided Dynojet Power Commander, which will limit the maximum allowable RPMs to 9,500. Minimum permitted post race weight, with fluid levels unaltered, will be 325 pounds for the impressive new Kawasaki, slightly higher than the 320 pounds required of most other machines in the class. Looks like its been a bit of a challenge to get the 400 on par with other bikes in this category.
 

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N400 is a monster on the road.. it has been tested to have a 210kph top speed, may be it could make more if its final drive is modified to 15/38t. It has a gruesome power at 5th gear.
 

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N400 is a monster on the road.. it has been tested to have a 210kph top speed, may be it could make more if its final drive is modified to 15/38t. It has a gruesome power at 5th gear.
Really?? Did the rider wake up afterwards :smile_big:

I put a 38T on the rear and only got 184 kph (actual, not speedo)
 

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N400 is a monster on the road.. it has been tested to have a 210kph top speed, may be it could make more if its final drive is modified to 15/38t. It has a gruesome power at 5th gear.
Calculate the hp for a 'wanted' speed (it's for cars but MC's are not that much different)
Link https://www.vwcorrado.de/pop/ps_zu_vmax.htm
So to make it easy, for 'real 210 km/h' the bike, with given 48 hp and the regular measured speed of 183 km/h, needs 73 to 77 hp

For better understanding read about CW-Value and Aerodynamic Resistance (please translate)
Link https://www.yamaha-motor.eu/designcafe/de/archive/archived-articles/index.aspx?view=article&id=442628

Note: This is for information only, so if one wants to dig deeper into the theme the internet has many more about this.
 
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