I went with 17/42 steel sprockets from http://www.sprocketspecialists.com/html/yamaha9.html
The 42 does bring the chain close to the swing arm - you have to stay on top of chain adjustment. It's a little slowwer to accerlate from a stop. You'll have to downshift to pass, especially on two lane roads (obviously depends on your speed). I haven't calculated the milage but the "low fuel light" used to come on @ 160 miles, now about 195 - 75MPH interstate. You'll be about 1 gear lower in the twisties. I was not impressed with the quality of workmanship/finish from Sprocket Specialists. I took out 2 links from the chain - didn't count but I'm pretty sure it was 120 to start with. Bill -----Original Message----- From: GTS-1000 Owners List [mailto:[EMAIL PROTECTED]] On Behalf Of Sail Kim Sent: Monday, September 23, 2002 5:03 PM To: [EMAIL PROTECTED] Subject: Rear Sprocket Hello, Any concerns or considerations on using 42 tooth rear sprocket? Pros and cons? Thanks!!!
