rockshox pressure calculator

How to use this RockShox pressure calculator

This calculator gives you a realistic baseline for air pressure on a RockShox fork (like Pike, Lyrik, SID, ZEB) and an air shock (like Deluxe or Super Deluxe). It combines your riding weight, bike category, suspension travel, sag target, and riding style to estimate where your first pump-up should land.

If you've ever searched for a RockShox pressure chart and felt overwhelmed by variables, this page simplifies the process: get a solid starting PSI, check sag, then fine-tune by feel.

Why pressure matters more than most riders think

Air pressure controls ride height, support, traction, and comfort. Too high and your bike feels harsh, skips off roots, and never uses full travel. Too low and the suspension sits deep, wallows in turns, and bottoms too easily.

• Correct fork pressure helps front wheel grip and steering precision.
• Correct rear shock pressure stabilizes pedaling and keeps the rear tire connected.
• Correct sag setup determines balance between front and rear ends.

Recommended sag ranges (quick reference)

Fork sag

• XC: 15-20%
• Trail: 18-22%
• Enduro: 20-25%
• Bike park / DH: 20-25%

Rear shock sag

• XC: 20-27%
• Trail: 27-32%
• Enduro: 28-33%
• Park / DH: 30-35%

These ranges are not strict rules, but they are reliable baselines for most modern MTB suspension platforms.

Step-by-step setup after you get your PSI

1) Pump to the calculator result

Use a shock pump and inflate both fork and rear shock to the recommended starting pressure.

2) Set sag with riding kit on

Wear your normal shoes, pack, water, and helmet. Bounce lightly, settle into neutral position, then check o-rings. Adjust pressure in 3-5 PSI steps until sag matches your target.

3) Dial rebound

Start near the middle of rebound clicks. If the bike feels bouncy, add rebound damping (slower). If it packs down in repeated hits, reduce rebound damping (faster).

4) Add compression only if needed

Many riders overuse compression damping. Start open or close to open, then add low-speed compression only to improve support under braking, pumping, and cornering.

Fine-tuning guide: symptoms and fixes

• Harsh on small bumps: reduce pressure 3-5 PSI or open compression.
• Bottoming too often: add 5 PSI, then consider volume tokens/spacers.
• Dives under braking: add 3-5 PSI or a click of low-speed compression.
• Rear feels dead in chatter: speed up rebound slightly.
• Bike feels unstable in corners: check front/rear sag balance first.

RockShox tuning notes (Pike, Lyrik, ZEB, SID, Deluxe, Super Deluxe)

Different RockShox models share the same setup logic: pressure sets spring rate, tokens shape end-stroke progression, and damping controls motion speed. If you run frequent hard bottom-outs even with proper sag, install one more token before adding excessive pressure.

For lighter riders, don't hesitate to run lower PSI if sag and support look good. For aggressive riders on steep terrain, a little extra pressure and/or one additional token can improve composure.

Frequently asked questions

Is this an official RockShox pressure chart?

No. This is a rider-friendly estimation tool designed to produce an effective starting point quickly.

Should I use body weight or riding weight?

Always use riding weight (including pack, water, shoes, and protective gear).

How often should I re-check pressure?

At least once every 2-4 weeks, and always after major weather or altitude changes.

Can I use this for coil shocks?

This tool is for air suspension pressure only. Coil shocks require spring-rate selection (lb/in or N/mm), not PSI.

Final thoughts

A good RockShox setup is less about chasing perfect numbers and more about consistent process. Start with a reliable baseline, verify sag, test on familiar terrain, and make one change at a time. With just a few short sessions, you'll get better traction, better comfort, and faster confidence on every ride.