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Old 10-22-2009, 06:39 PM   #14 (permalink)
theycallmeebryan
Master EcoModder
 
Join Date: May 2009
Location: New Jersey
Posts: 333

2003 Ninja EX250 - '03 Ninja EX250
90 day: 87.63 mpg (US)

Saturn - '99 SL1 Base
Thanks: 22
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I'd have to agree with janvos.... for a 90cc cylinder, the primary should have an inside diameter of no more than 1" in my opinion.

The Stock Ninja 250 headers have an "H" pipe crossover about a 6-8 inches out of the head, FWIW. The 87-07 Ninja 250 have a dual exhaust and didn't merge into one. Most aftermarket exhausts for the bike have a 2-into-1 design. The 08-present Ninja 250's have a 2-into-1 design in stock form.
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Doing my part to reduce dependence on OIL
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If you have to use your brakes, you are driving too fast!

My 101.5 MPG 2003 Kawasaki Ninja 250



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