Senior VR Member
Join Date: Jun 2012
Location: Buford, GA
Thanked 160 Times in 115 Posts
A lot of folks complain about a lack of lubrication at the splines, and I have seen the splines be quite dry from the factory. When I pulled my engine last week I pulled the drive and checked ALL FOUR sets of splines (secondary drive to u-joint; u-joint to driveshaft; driveshaft to final drive; final drive to wheel) and they were all just about bone dry (except the drive to wheel one, which was lubed when i put tires on it last).
But with that said, the drive shaft also showed absolutely no signs of rust or wear. I have never seen a drive shaft eat itself up like this in person, though I have seen many shaft drive bikes from all manufacturers suffer from inadequate lubrication at the driveshaft splines, especially on bikes like the C50 where the boot is not held in place with a clamp and water can get in there.
I am curious how many actual driveshaft failures there have been out of the tens of thousands of these bikes made in the last 15 years. I have heard of two for sure on this site and one on another, but not paid much attention to it, but I am sure there are others.
This is not the first person posting that they have filed a complaint to NHSTA, so I can say without a doubt that nothing will happen. They will not respond, and if you call them or repeatedly contact them about it they will respond saying that a driveshaft slowly destroying itself from lack of lubrication is a preventable maintenance issue, not a safety related design defect. But maybe if enough people complain Suzuki will add lubing the splines to the maintenance chart so people know to do it every now and then.