Variable rate shock springs.
Larger sag adjustment range.
Eases shock wear and heat slowing down the compression stroke.
More bottoming resistance for safety.
TENERE 700 SHOCK SPRING | VARIABLE RATE
8.4/10.3 120lb can carry gear. For a 160lb rider spring will be soft.
8.6/10.3 140lb Rider can carry gear. For a 180lb rider spring will be soft.
8.8/10.5. 165lb Rider can carry gear. For a heavier rider the spring will soft.
9.0/10.8 190lb Rider can carry gear. For a heavier rider the spring will be soft.
9.2/11.4. 220lb Rider can carry gear. For a heavier rider the spring will be soft.
9.4/11.4. 250lb Rider can carry gear. For a heavier rider can carry luggage but would have to add preload to spring or adjust fork height. The 9.6/11.4 may be a better choice especially if your aggressive.
Aggressive riders that carry speed getting airborne off road go up a spring rate if you want more bottoming resistance.