CTR Suspension Calculator — Professional MTB Suspension Setup Tool

Stop guessing. Get your exact fork and shock setup in under 2 minutes.

The tool your suspension tuner doesn't want you to have.

Getting your MTB suspension dialled in has always meant either paying a professional hundreds of rands per session — or spending hours on the trail making blind adjustments. The CTR Suspension Calculator changes that.

Built by CrankTech Racing based on real-world suspension tuning experience and industry-standard formulas, this tool gives you a professional baseline setup in under 2 minutes — and keeps refining it every ride.

WHAT YOU GET

Enter your rider weight, fork brand and model, travel, stanchion diameter, volume spacers and riding style — and the calculator instantly outputs:

• Fork starting PSI
• Shock starting PSI
• Fork sag target (% and mm)
• Shock sag target (% and mm)
• Fork rebound starting clicks
• Shock rebound starting clicks

FINE TUNE DIAGNOSTIC LOOP

After your first ride, come back and select what you felt. The calculator diagnoses the symptom and tells you the exact fix — reduce PSI by 7, open rebound 2 clicks, add a volume spacer. One change at a time, so you always know what made the difference. Every adjustment is saved to your device automatically.

SUPPORTED BRANDS

🔧 RockShox — SID, Pike, Lyrik, ZEB, Psylo, Judy, Recon, BoXXer, Domain, SIDLuxe, Super Deluxe, Vivid and more

🔧 Fox — 32, 34, 36, 38, 40 · Rhythm, Performance and Factory · GRIP, GRIP2, GRIP X, GRIP X2, FIT4

🔧 Marzocchi — Bomber Z1, Z1 Coil, Z2, Z2 E-Optimized

🔧 Öhlins — RXF34, RXF36, RXF38 · TTX dampers

🔧 X-Fusion — Trace 36, Vengeance 38, Sweep

🔧 SR Suntour — Durolux 36, Durolux 38, Auron

🔧 DT Swiss — F232 ONE, F323 ONE, F535 ONE, R323 ONE, R535 ONE

HOW IT WORKS

1. Enter your rider weight including gear
2. Select your fork brand, model, damper and travel
3. Select your rear shock brand and model
4. Choose your discipline and riding style
5. Get your complete setup instantly
6. Ride it, feel it, fine tune it

DEVICE & DELIVERY

Works on any phone, tablet or laptop — no app store required. Open it in any browser or tap "Add to Home Screen" to install it as a proper app with your own home screen icon. Works offline after the first load.

Your access link is delivered instantly after purchase. Your setup and adjustment history are saved automatically to your device.

R299 — Once off. Yours forever. No subscription.