Yeti SB120: suspension setup & specs
The Yeti SB120 is a downcountry bike with 140 mm of fork travel and 120 mm at the rear. This page lists the 5 current builds with fork, shock and shock size and gives matching starting values for SAG and tyre pressure.
Calculate the setup for your Yeti SB120 →
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 |
|---|---|---|---|---|---|---|---|
| C2 90 | FOX Performance 36 SL (140 mm) | FOX Performance Float | – | 120 mm | 13.6 kg | €6,500 | Setup → |
| X0/90 | FOX Factory 36 SL Grip X2 (140 mm) | FOX Factory Float | – | 120 mm | 13.4 kg | €8,200 | Setup → |
| XT Di2 | FOX Factory 36 SL Grip X2 (140 mm) | FOX Factory Float | – | 120 mm | 13.3 kg | €8,500 | Setup → |
| X0 AXS | FOX Factory 36 SL Grip X2 (140 mm) | FOX Factory Float | – | 120 mm | 13.1 kg | €9,500 | Setup → |
| XX AXS | FOX Factory 36 SL Grip X2 (140 mm) | FOX Factory Float | – | 120 mm | 12.9 kg | €11,500 | Setup → |
How it compares
Up front the Yeti SB120 runs 140 mm – 10 mm more than the 130 mm median we calculated from 13 bikes in the “downcountry bike” category. The rear offers 120 mm, 20 mm less than the front. On travel, it slots in between the Yeti ASR LR and the Yeti SB135 in the Yeti range. Yeti builds the frame from carbon.
At 12.9 kg (XX AXS build), the weight is close to the category median of 12.6 kg. Within the range, weight varies by 0.7 kg. With a starting price of €6,500 (C2 90), the Yeti SB120 is above the category median (€5,000). For the XX AXS build, Yeti asks €11,500. Yeti uses FOX suspension throughout. In total, 2 different forks are used, from the FOX Performance 36 SL to the FOX Factory 36 SL Grip X2.
Setup notes for this spec
- Air fork (FOX Performance 36 SL): the air valve is on top of the left leg under a cap. Change pressure in small steps (about 5 psi (0.34 bar)) and cycle the fork a few times afterwards so the air chambers can equalise.
- Rebound: on FOX suspension the rebound adjuster is red. Always count clicks from fully closed (clockwise to the stop) so you can return to any setting.
- Air shock (FOX Performance Float): 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 Yeti SB120
The table converts the recommended SAG percentages into millimetres, so you can check them with the O-ring directly on the stanchion and on the shock shaft. Adjust the air pressure until the value is right. If Yeti specifies its own target SAG for your model, that takes priority.
140 mm fork (all builds)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 24 mm |
| Trail | 20 % = 28 mm |
| Enduro / rough | 22 % = 31 mm |
| Bike park | 20 % = 28 mm |
How to measure SAG is explained in our guide SAG setup.
Tyre pressure starting values
The values apply to 2.40″ wide tubeless tyres with a trail casing. With an inner tube add about 0.2 bar (2.9 psi), with an insert take off about 0.1 bar (1.5 psi). Stock tyres: Maxxis Dissector 2.4 EXO / Maxxis Forkaster 2.4 EXO.
| 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
The sticker on the fork (or on the shock) and the manufacturers’ setup charts give you a first pressure. Our calculator is more precise and suggests rebound too – always check the result via SAG.