| Compressed at Ride | Up-Travel | Droop |
|---|
What Shock Travel Tells You
A shock absorber can only move so far between fully extended and fully compressed. That distance is its stroke, and where the shock rests at ride height decides how much room is left for the wheel to move up over bumps versus down into dips. Getting that split right is the difference between a planted, controlled ride and one that crashes or skips.
Up-Travel and Droop
Up-travel is compression room for bumps; droop is extension room for holes and for keeping a wheel on the ground when the chassis leans or twists. Street setups usually favor more up-travel than droop, while off-road rigs want generous droop so a tire can reach down into terrain. Either way, neither should run out before the rest of the suspension does.
Avoiding Bottom-Out and Top-Out
If the shock bottoms out, it slams metal-to-metal and can damage the shock or mounts. If it tops out, the wheel unloads and loses grip. Lowering or lifting a vehicle changes installed length and shifts this balance, which is why a proper lift or lowering job checks shock travel and often pairs with correct-length shocks or limiting straps.
Frequently Asked Questions
How do I measure installed length?
Measure eye-to-eye, or stud-to-eye, with the vehicle at normal ride height and weight on the wheels. Compare it to the shock’s extended and compressed specs.
What split should I aim for?
A common starting point is roughly a third droop to two-thirds up-travel for the street, with more droop for off-road. Avoid letting either drop near zero.
Does lowering my car hurt travel?
Yes. Lowering eats up-travel and can leave the shock near bottom-out, which is why lowered cars often need shorter-stroke shocks and bump stops.