2013 Stelvio NTX vibration

[macclan5]

Looking for any insight/wisdom...13 Stevlio NTX with noticeable vibration.

The story behind the story..this is my 6th cycle...all 5 before were shaft drive Honda's (PC800, Valyrie Interstate, ST11/13, NT700V).  Bought the Stelvio 10 hours away (in Ohio,, i live in MN)..basically drove over and bought it.  Never rode a Stelvio (or any MG other than one short test ride on a 08 Norge) until that test ride on a cold February morning. Bike had 13,658 miles. Well cared for (Cadre Cycle). GPR exhaust and flashed ECU. I've put nearly 1500 miles so far on it this year. My only reference is to how a Honda shaft feels. Smooth under acceleration. Minimal shaft lash. My Stelvio is not like that.  3-4k noticeable vibrations. at 70 mph and 4k...even the handguard is buzzy.  Touch the frame where the side cases are mounted...buzzy. Accelerate and it feels bit like lugging the motor. in last 500 miles have changed both the CARC oil and gearbox oils. Checked tire pressure--good. Feels like gravel for wheel bearings (well not that bad but not smooth).Touch the front rotors and cool to the touch. Rear rotor is slighly warm to the touch. At 70..pull the clutch in...smooth...even at 4k. Only other observations have been when coming to a stop..and then accelerating-- hear a noise (although very brief) like something is binding up and then it goes away.  While didn't buy the bike for fuel economy..been driving it very responsibly on back roads averaging 62 mph.  I have a 100 mile daily commute. Best mpg is 40. While not expecting Honda smooth...not seeing me long term if this buzziness/vibration is normal...can't go no more than 30 minutes and my hand falls asleep.  The only other observation is i did suffer a DA moment..while completely stopped..moved the bike off the side stand and kept on going ....laid the bike down on the right hand side and broke the right hand guard. I So enjoy this bike...except the vibration...and the nearest dealer is about 2 hours away... i am very comfortable doing my own wrenching.  Any insight truly appreciated.

[guzzisteve]

It would be the bushings on the torque arm from swingarm front to the knob that comes up out of rear drive, wiggle it & twist it. Many fail.
Check it out. It will make the rear fender hop all over when you let clutch out.

[Tkelly]

40 mpg is normal for these.If you want to ride across the river let me know and we can meet up .I have a 14 Stelvioand live near Spring Green,frequently ride near the big river.You could ride mine and compare,maybe you are not used to it,they are different.

[Moparnut72]

Are you winding it up a bit? New to Guzzi riders tend to lug them as I did when I got my first one.
kk

[macclan5]

thank you for replies...reminds me how small the world is when someone knows of your cycle miles away. Just this morning was going down the interstate at 80 mph and 4500 rpm..smooth. Not an issue. Hit the other roads playing with rpm and speed..really didn't pick up anything like what was happening yesterday. As the old saying goes.."you don't know what you don't know" while stating the incredibly obvious..truly don't know if this is an issue. Being a new to me bike with a learning curve..don't want to be that newbie who made an expensive assumption. The tires are the Metzler Tourace...plenty of tread. With the torque arm bushing..reasonable it would start to fail after 15k miles and is the replacement a monumental task or something which one whom has a reasonable mechanical skillset tackle?  One last ?...how well do these bikes coast?  Going down a steep incline at 70 mph..pull the clutch in and this bike starts to slow down immediately.

[DC950]

that's a new one on me - coasting.  I've never thought about doing it on mine.  Especially with the clutch pulled in.

For the heck of it once in the 90s we coasted in neutral for miles coming down the Angeles Crest Highway.

[coast range rider]

Check motor mount bolt torques.