Northern900

I dunno. The stock one looks great and is nice and quiet!

I didn’t do the mod as described by the OP, but I did replace my clutch basket with a new, updated one. I did not replace the plates or any other parts except for the nut that holds the clutch basket in place. Completely solved the ‘vibration’ issue.

This was a definite feeling only present at around 3200 rpm when cruising at a steady speed in any gear. There is also some vibration through the pegs, but that’s just the bike. Also a noise when at idle with the clutch engaged. Also just the bike. But the 3200rpm thing was definitely different and has been cured with the basket change.

Given that Yamaha has a new part number for the basket suggests that they did a redesign because they were aware of a problem.

Also search “gronk”.

Search “Roughness and noise at low throttle openings”

Time will tell! I’ll report back in 20,000 miles or so 😀

There was another thread that talks about this. Many people have fixed the issue by drilling out rivets that hold the steel drive gear to the aluminum clutch basket (it comes as one assembly), replacing the rubber shock mounts in there, then booting them back together. It’s a good fix, but I elected to just replace the basket. I think that the other thread used the word ‘gronk’ to describe the issue. I’ll try to find it.

So, I finally got around to a fix. I changed out the clutch basket with the updated part number (the old part number is 1RC-16150-00-00 and the new one is B7N-16150-00-00). I did not go through the clutch basket repair procedure that I have seen on this forum. Didn't really have access to the tooling needed to drill out the old rivets etc. The good news is that the replacement of the clutch basket (which was an easy job) solved the issue. The bike is now smooth as silk. As long as it doesn't blow up now, I think we're all set.

If you don’t properly heat up and liquify that red loctite before you attack it with an impact, the hard loctite will ‘ball’ up an damage the threads on the shaft as the nut is turned off. Using an impact on such a job is not dangerous as long as you’re careful.

Yamaha Canada does have them apparently. More $, but I have one coming now.

I take it back. I ordered it, but now am told that it’s delayed indefinitely 🤔

I found some in stock at Babbitts Online. Fits the 2019 tho, may not fit the 2021. Price was right!

Me too. I’m pissed. Cause I waited for the top case to be in stock at Revzilla, thinking I’d order both at the same time. Only to find that when the case became available, the racks were out of stock!! I have t been able to find one either. But, I do hav e a case 😀

So, I took mine all apart. A fairly simple operation as I do have an impact. I can’t tell though, if the clutch basket rubbers are worn though, at least not by hand. I shall try putting it in a vice and gently applying force to see if I have any play there. But, my issue with the bike sounds exactly like what you experienced. So, am pretty sure that an updated basket will solve the issue. I, like yourself, would not trust bolts in that situation, so would rather just replace rather than risk catastrophic failure. It would be nice though, if I could find play in the gear/basket.