Has anyone changed the gearing?

[ChipBeck_imp]

In my experience a tooth on the counter sprocket is worth about 400 rpms. Ie: if you are running a given speed at 5000, going up 1 tooth on the counter will net 4600 at the same speed. Conversely it will make it slightly harder to take off, and might require a downshift for going up hill or passing.

Mick,

One tooth(from 18 to 19) on the counter shaft is the maximum that will fit and the chain guard has to be trimmed to even clear that. It slows the engine 200 RPM at 70 mph, not 400. Down 2 on the rear wheel sprocket will net another 200 RPM for 400 RPM total. 7th Gear Designs will make the sprockets out of steel. Almost all aftermarket units are aluminum and they wear out much faster. This is the gearing I have on my '13 CB1100 and it's wonderful. Much more enjoyable. Cheers.

There is a photo of my 7th Gear Designs rear sprocket here.

http://cb1100forum.com/forum/showthread.php?tid=7395

Chip