800lbs spring for DNM absorber 260 to 290mm

Height 140/150mm
Diameter 68/69mm
Inside diameter 45/47mm
The spring should be adjusted to the weight of the driver but also the mounting position of the damper.
We must measure the distance between the axis of the swingarm and shaft attachment below the damper.
Distance = 100mm> 1000lbs spring up 70kg for driver and 1200lb beyond.
Distance = 130mm> 800lb spring for up to 70kg driver 1000lbs and beyond.