Simplon Cirex: suspension setup & specs
The Simplon Cirex is a cross-country full-suspension bike with 120 mm of fork travel and 116 mm at the rear. Here you will find all 1 current builds with fork, shock and shock size, plus matching SAG and tyre pressure starting values.
Calculate the setup for your Simplon Cirex →
All builds
Fork, shock, shock size (eye-to-eye length × stroke) and rear travel, weight and price according to the manufacturer. Wheel size: 29.
| Build | Fork | Shock | Shock size | Rear travel | Weight | RRP | Calculator |
|---|---|---|---|---|---|---|---|
| Cirex | Check manually (120 mm) | Check manually | – | 116 mm | 10.6 kg | – | Setup → |
How it compares
On travel, the Simplon Cirex is right where the “cross-country full-suspension bike” category usually is: 120 mm up front against a median of 120 mm from 23 bikes. The fork has 4 mm more travel than the rear end with 116 mm – a common layout that takes load off the front on steep terrain. Within Simplon’s mountain bikes, it sits between the Simplon Razorblade and the Simplon Rapcon on travel. Simplon builds the frame from carbon.
At 10.6 kg (Cirex build), the weight is close to the category median of 10.8 kg.
Setup notes for this spec
- Air shock (Check manually): measure SAG in your riding position, ideally with a helper holding the bike. Cycle the shock a few times after every pressure change.
Target SAG for the Simplon Cirex
SAG is the share of travel your weight already uses in the riding position. The table gives it straight in millimetres – read the O-ring on the stanchion and on the shock shaft and adjust the air pressure until it matches. Any figures from Simplon take priority.
120 mm fork (all builds)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 20 mm |
| Trail | 20 % = 24 mm |
| Enduro / rough | 22 % = 26 mm |
| Bike park | 20 % = 24 mm |
How to measure SAG is explained in our guide SAG setup.
Tyre pressure starting values
Basis: 2.40″ tyre width, tubeless, trail casing. If you run tubes, add about 0.2 bar (2.9 psi); with an insert, about 0.1 bar (1.5 psi) less is enough.
| Ready-to-ride weight | Front | Rear |
|---|---|---|
| 60 kg | 1.43 bar (21 psi) | 1.63 bar (24 psi) |
| 70 kg | 1.55 bar (22 psi) | 1.75 bar (25 psi) |
| 80 kg | 1.67 bar (24 psi) | 1.87 bar (27 psi) |
| 90 kg | 1.79 bar (26 psi) | 1.99 bar (29 psi) |
| 100 kg | 1.91 bar (28 psi) | 2.11 bar (31 psi) |
| 110 kg | 2.03 bar (29 psi) | 2.23 bar (32 psi) |
| 120 kg | 2.15 bar (31 psi) | 2.35 bar (34 psi) |
Air pressure in the fork and shock
You will find a guide value for air pressure on the fork sticker (or on the shock) or in the suspension makers’ charts. Our calculator also takes riding style and rebound into account. In the end, measured SAG is what counts.