The CBR600RR s engine also received a new high resistance valve lifter and a popup valve system inherited from the CBR1000RR . Included also are improved fairings that enhance stability and reduce noise emission levels.
2.
I understand simulated altitude training via " " mask-based hypoxicator system where the barometric pressure is kept the same, but the oxygen content is reduced which also reduces the partial pressure of oxygen " " ( per our altitude training article ), but the Elevated Training Mask you linked to is simply a restricted flow device with different resistance valves to simulate different altitudes.
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