Installing progressive front fork springs will give your F850GS a significant improvement in handling and braking, both on and off-road. This spring kit from Touratech Suspension is a quick and inexpensive way to dramatically change your GS's handling performance. The progressively wound springs for the front suspension give you a plush ride at slow speeds, but when the road gets rough, or you decide to push hard in the corners, the springs are much firmer towards the bottom of the travel where you need it the most.