
BITUBO Fork Spring Kit — Progressive Rate + MOTOREX Oil
Specifically designed for roadsters like the Yamaha XJ900 S Diversion (4KM) from 1996 to 1998, this BITUBO kit offers a progressive spring rate to better adapt the fork's response to daily riding. The springs are made from a specific steel alloy and undergo heat treatment and shot peening to increase longevity and consistency of performance over the miles.
The kit includes everything essential to bring the fork up to standard:
This setup is aimed at riders looking for a more linear suspension response at the beginning of the stroke and a more progressive feel at the end of the travel, while maintaining the road-oriented character of the machine. Compatible with the XJ900 S Diversion (1996–1998), it allows for the replacement of the original springs without major modifications to the front end.
To ensure optimal adjustment and safety, have the installation and leveling of the fork performed by a qualified workshop. Reliable BITUBO product designed for road riding and the daily use of demanding riders.