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Can anyone tell me what is this part name and what does it do? The bike is a S1KRR 2015 is making a lot of noise and humming pretty loud.

18 51 8 540 838​
SERVO UNIT, EXHAUST FLAP​
0.31​
1​
$299.92​


Used $30 shipped. Let me know if you want one.
 
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yes, but you can get a servo buddy to get rid of the light, or for performance and get rid of all emission related items I offer the RCK2 and RCK3 with HP power maps for the 12-19 K46.
 
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