Trying to figure out out how and what will be changed by going from a 15T to a 14T on the front sproket while keeping the original size on the rear. It's on a 2006 Katana GSX 600F

GSX 600F Katana 1989-1991
GSX 600F Katana 1989-1991
OEM Gear Ratio - 14T Front Sprocket / 46T Rear Sprocket OEM Chain - 530 Pitch / 112 Links

The metal guide is there to protect the engine case if the chain breaks. Shaving 1/8th inch will not hurt any thing under most conditions. Leaving the piece in will still help protect the bike.

you can change the sprockets.If you go to a 16 tooth front sprocket. two teeth on a front sprocket is like droping 4 teeth on the rear. You could drop 2 teeth on the rear sprocket but a 43 tooth is probably harder to find. the usual choices for front are 14,15,16 tooth.
For the rear they are 44,45,46 tooth

The way to remeber gearing changes is on REAR sprocket is smaller=faster and larger=slower top end.
the FRONT is OPPOSITE to the rear smaller=slower and bigger=faster.
You may have to lengthen or shorten the chain depending whjch way you go.

Without knowing some details such as the type of rear axle (quick release or bolt) the type of hub, spin on or slide on, type of bottom bracket you have etc. it is hard to give you some advice but I will tell you that it will be difficult. You will especially have to take into consideration your chainline. This is the direct line of sight that your chain will follow in each gear for perfect shifting.It will be determined by your frame and whether or not the components you are hoping to use will fit properly and work together properly. You will need enough space at your rear wheel to mount your new rear derailleur without having to spread your frame too far. You will also have to take into consideration whether or not your new rear derailleur and front derailleur will mount correctly in order to line up in all shifting positions. You will be customising your bike and you have to decide whether the cost of the parts for the mod justify the expenditure. You might want to keep your bike in original condition and trade for want you want or buy a new one and keep the old one. If you decide to go ahead you will want to have a good workspace with lots of lighting and all the tools to fit the parts that you will be installing. I am not trying to discourage you but I will tell you that when I was working in a well equipped bike shop, I did some custom work like this and still ran into unforseen problems. You will also want to have a place to work where your bike can sit unassembled for a while as it will not probably be a one day job. Do lots of research before hand. Also a good bike stand and someone that understands what you are trying to do who can physically help you would be nice. Good luck and good riding.

A good setup that many people use for both street and track is 14t front and 40t rear. Top speed is down a little but you´ll probably still be able to hit 135 MPH.,

A good setup that many people use for both street and track is 14t front and 40t rear. Top speed is down a little but you´ll probably still be able to hit 135 MPH.,

A good setup that many people use for both street and track is 14t front and 40t rear. Top speed is down a little but you´ll probably still be able to hit 135 MPH.,

A good setup that many people use for both street and track is 14t front and 40t rear. Top speed is down a little but you´ll probably still be able to hit 135 MPH.,

A good setup that many people use for both street and track is 14t front and 40t rear. Top speed is down a little but you´ll probably still be able to hit 135 MPH.,

A good setup that many people use for both street and track is 14t front and 40t rear. Top speed is down a little but you´ll probably still be able to hit 135 MPH.,