[Jack1995zx6r]

Hi guys i have a quite click sound coming from the left side its kinda loud at 4k revs

Its got full service history and only done 13k

Is it cct or is it valve clearance

 

[Bikehedz]

Exhaust flange gasket. Order 4 new ones for $10 and take your time changing them. You could try to give the nuts/bolts half a turn but the seals are a crush type seal that only works once.