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High RPM's vs. MPH

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7.3K views 27 replies 10 participants last post by  diyguy  
These are 4 cylinder machines. The inline fours develop their power at higher RPMs as each cylinder displacement is about half the size of their twin competitors that are also one liter motors. There is a trade off. Twins develop more power at lower RPMs as they can’t spin the two cylinders as fast as a four. Twins have more vibration and are slower to change their speed because of the simple momentum of two big cylinders vs four small cylinders. The fours will
make more power at a higher RPM as the smaller cylinders can spin faster and react quicker. They are MUCH smoother because they can be balanced perfectly. They are also more reliable typically. Kawasaki knows how to build great twins as well as inline fours. The engines in the Ridge are bulletproof for a bunch of reasons that I won’t get into now.

The real area where Kawi can improve is simply the clutch tuning. Their stock clutch setup is perfect for ranch work and slow trails but will make the machine scream on road and hard pack. JBS has solved this problem I think. I will start a new thread in this soon.