Hi All - as part of my rebuild, I'm upgrading my gearbox, and my 4 speed rocket is up for sale. I had it checked at Stephen Bear gearboxes in Leeds. Their view is it's in good shape with a little play in the input shaft first bearing. They told me not to worry because the shaft is supported by the spigot bearing in the flywheel.

The summary of it is:

• 4 speed
  
• straight cut quaife kit
  
• uprated quaife shift block
  
• uprated quaife top plate
  
• short throw shifter