Wilbers Zero Friction Progressive Fork Springs / F800GS '08-'12

The stock BMW fork springs are too soft at 4.5 N/mm resulting in excessive nosedive under braking, and bottoming problems during high speed compression events. This Wilbers two stage spring upgrade starts at a 10% higher spring rate of 5.0 N/mm which is still comfortable over the smaller bumps but then they increase in rate to 6.5 N/mm as they compress resulting in reduced nosedive and improved chassis control, especially over the bigger bumps. Great for street and off road riding.  

Don't forget to order Fork Oil! You will need 2 Liters. For the Marzocchi fork used on 2008-2012 F800GS models, use 7wt for more mixed on/off road use, or 10wt for more street/sport oriented riding. See below to order.

The stock Marzocchi fork seals induce a lot of stiction, we strongly recommend our SKF fork seal upgrade. See below to order.

When changing the fork springs, drain all the old oil from the fork, add new fork oil, pump the damper rod several times to expel all air and set the air chamber to 70mm. The air chamber is simply the distance from the oil level up to the top of the fork tube with the spring removed and the fork fully compressed. This can be measured with a tape measure or more conveniently with our Fork Oil Level tool. See below to order.