Kawasaki KH500,  H1 H1R H1R-A H1R-W 6 Speed Gearbox, with Selector Drum, neutral is between 1st and 2nd gear. 
This is a direct copy of the Factory Race Gearbox for all the H1 500cc machines. 
H1 / H1R / H1R-A / H1R-W.
 
The complete package to convert your 5 speed to a 6 speed close ratio gearbox!
 
 
This is a very high quality, close-ratio gearbox with the standard or long input shaft to fit ALL the Kawasaki H2/H1/KH500/750/H1R  models.
 
Beautifully machined and of far better quality than a standard box.
 
 Neutral is between 1st and 2nd gear as normal, everything is super finished, it uses the OEM Forks etc, includes new needle bearings and outer races which are no longer available. Also includes the selector drum and neutral indent + spring and longer bolt to suit. It comes fully assembled with all shims, clips and bearings.
 
We are considering making new forks, from EN40B as all the ones we have seen are worn out. There are forks available from the USA, but we don't know the quality or material, save to say they are from China.....
 
Available in short input shaft for standard clutch application, or long shaft for dry clutch, use the drop down at the top of the page to select the option.