HELLO,MY NAME IS RODOLFO GARZA,AND I RECENTLY BOUGHT A 2006 C90T 0 MILES.
WHEN I SHIFT FROM 1st TO 2nd (and so on)THE SHAFT (OR TRANSMISSION) MAKE A BIG "KRANK" NOISE,MY HEART HURTS EVERY TIME I DO THIS.IT SOPUSES THAT SHAFT IS "SMOOTHER" THAN BELT OR CHAIN,BUT I DON'T THINK SO...'CAUSE I ALSO HAVE A VULCAN CLASSIC 800,AND THIS GIRL IS MORE "QUIET".
AND WHEN I PASS A BUMP OR A HOLE IN PAVEMENT,IT SOUNDS LIKE A "BUNCH"OF LOOSEN SCREWS UNDER THE TANK AND INTO THE FORK...AT SUZUKI TOLD ME THAT IS NORMAL,IS A VERY NOISIE (NOISE) CYCLE...
ANY WAY,I LOVE MY C90T...ANY INFORMATION WILL BE APRECIATE.
PLEASE,FEEL FREE TO CONTACT ME.THANK YOU,AND GOD BLESS YOU ALL.
fofomusik@yahoo.com

 

i notice the noise as well especially if i get over 20mph before shifting into 1st. try shifting into 1st around 10-14 mph. it still clanks a little but doesnt hurt your pride as bad..........
safe riding

 

Big bike with big gears....Normal condition

 

My bike does the same thing I just purchased a c90t 2015 with 3500 miles on it when I shipped it really is loud sounds like the train is going to blow right out of it but I've been riding as much as I can I live in the Northeast so the weather makes it tough but the last ride it started popping out of first gear so I'm bringing it into the shop the dealer said he would take care of it

 

The noise is not uncommon the over head cam and valve train makes some racket use a high grade fuel will help some preferably non ethanol and don’t lug the engine but all Boulevards do this some,,some more than other and the shifting can make a loud clank as well on this bike I know I have one