You won't have to add or subtract any links from the chain using anywhere from a 16 to 19 tooth drive sprocket. Assuming you are using an 18 tooth now, going to a 19 tooth should lower your rpms by 300/400 rpms at 80 mph.


12 Rocket Roadster
03 Bonneville America
69 BSA Firebird Scrambler
73 Yamaha TX 750