Light vibration in higher gears

[TZR250]

Hey guys, figured I'd post yet another thread begging for your assistance. My bike vibrates in 5th and 6th gears, and I am aware that a bike will shake etc but this is different to the first 4 gears, and was wondering if anyone had any ideas what could cause this issue. I'm changing over the gearbox/clutch oil tomorrow so I figured any other checks you guys can recommend while I'm at it would be good. Thanks!

[garth]

Certain revs or certain speed?

Check your wheels are balanced.
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[TZR250]

Thanks for the tip. While the wheels are off to do brakes I may take them to get them checked up at a bike shop. Will keep this thread updated.

[Ariel Badger]

Check your tyres for wear and check chain tension. Does the vibe go if you pull the clutch in? Put the bike on stands with the wheel off the floor and run her up the gears, do you still get vibration?
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