Otto Bike l 2018 Kawasaki Ninja 400 Design Review
Channel: Otto Bike
Date: 24/04/2018

Otto Bike l 2018 Kawasaki Ninja 400 Design Review-Kawasaki engineers went back to the drawing board for the Ninja 400’s parallel-twin powerplant. In spite of the fact that they weren’t exactly putting together what you might call a stupidfast engine, due diligence was paid to performance-enhancing details. It starts out with a 70 mm bore and 51.8 mm stroke that gives us the 399 cc displacement and flatter pistons that increase compression to 11.5-to-1 with less squish area. Oil jets cool the piston crowns from below which in turn allows them to survive with a lighter construction for less reciprocating mass. Staggered intake funnels smooth out torque generation with a larger air box that helps increase volumetric efficiency a tad with oval-shaped 32 mm throttle bodies to manage the fuel delivery.

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