Hi. I have for sale a never used Marzocchi Z3 Z4 Z5 travel reduction kit. For reducing 100mm to 80mm travel version. Part number 850276. It consists of two longer springs and four shorter. Diamensions of springs are: length: 161mm/18mm, ID: 18,2mm/18,6mm, OD: 24mm/24mm. Longer springs are green colour coded.