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I bought a new driven assembly. The bearing and seal were in pretty bad shape and using heat to pull off the sleeve would have ruined them.

I didn't remove the small rollers, they came out when I took the spring off. The pins had worked their way into the center shaft far enough so that the small rollers were no longer being held by them. I was then able to drive out the pins with a hammer and a drift. I suspect that during...

I have a 2019 C400x I bought new in 2020. I just finished my 90,000 mile service. At 51,000 miles it swallowed a valve but fortunately I had an extended warranty so I was able to have the engine and drive train assembly replaced. Other than that I’ve had the heated grips replaced and the clutch...

It’s probably the satellite module which is added if your bike has heated seats.

I found that temperature has a big impact on low battery indication. In cool weather, simply switching to carrying it in an inside pocket makes a big difference.

I think you made the right choice. I'm 75 years old and as you can see from my medallion I've put a few miles on BMW scooters. I started with a C650GT and I'm now on my second C400X. I've found that with my 75 year old body and the type of riding I like to do, the C400 is the perfect bike for me...

You have the same problem I had. Sorry but the only fix I found was to replace the whole assembly.

I've had a similar problem on my 2019 C400X although not as extreme as yours sounds. I first thought it might be one of the discs was warped but when I checked the run out, both discs were in spec. What I did that seems to have fixed it is I started using mainly the front brake and lightly...

Just so you know, the way the CVT works is as the bike speed increases those two plates separate to allow the gear ratio to change. That's why that big spring is there. If you weld them together then as the front pulley comes together from centrifugal force you are going to put a lot of stress...

Looks to me like the pulley is pressed onto the shaft and then peened. Also the shaft is steel and the pulley is aluminum so I really don't think you can weld it. Sorry.

Looks to me like the pulley has come loose from the shaft. I'm afraid you are going to have to replace the unit.

No, mine made a noise more like a wood chipper. I also noticed (nice videos!) that the clutch pulley isn't wobbling like mine did. Yours sounds more like something is scraping.

I purchased a new C400X back in 2019. I have done all the recommend BMW servicings at the recommend mileages. At around 70,000 miles the CVT started making a noise like a wood chipper and I was losing power. I took the CVT cover off and didn't see anything obvious so I continued riding it until...

My theory is that the engine heat is heating up the gas tank and causing fumes to be forced out the vent which are real noticeable in a closed space. I've found that if I place a fan so it's blowing air in the opening around the rear shock strut, angled forward towards the gas tank, it...

What did the dealer have to say? Mine is doing the same thing.