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In 2018, Yamaha made some major tweaks to the already powerful YZ450F . Adding usable, controllable power is how we make the new YZ450F even better.
Now there's more power to take advantage of holeshots, but in a way easier for the rider on board the motorcycle, in those moments when his right hand is full of energy. The new Yoshimura RS-4 Signature Series complete system adds 2.8% more HP and 1.89 more joules of torque, giving the rider better, more linear throttle response.
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