MC Tested: Race Tech Motorcycle Shock Preload Adjusting Tool You can dispose of those drifts, screwdrivers, spanners next time you need to adjust spring preload on your motorcycle.

We take a look inside the modern high-performance motorcycle shock and explain how damping and valving work to make motorcycles perform better.

What BMW’s Dynamic Suspension Adjustment does is fundamentally alter the effective spring rate by introducing a second point of compression from beneath the spring.