Vitus Nucleus: suspension setup & specs
The Vitus Nucleus is a trail hardtail with 100–120 mm of fork travel. Here you will find all 6 current builds with fork, plus matching SAG and tyre pressure starting values.
Calculate the setup for your Vitus Nucleus →
All builds
Fork, weight and price according to the manufacturer. Wheel size: 27.5 / 29.
| Build | Fork | Weight | RRP | Calculator |
|---|---|---|---|---|
| Nucleus | Suntour Raidon 32 (120 mm) | – | – | Setup → |
| 27 VR | SR Suntour XCR32 Air LOR DS (120 mm) | – | – | Setup → |
| 27 VRS | SR Suntour XCR32 Boost Air LOR DS (120 mm) | – | – | Setup → |
| 27 VRW Womens | SR Suntour XCR32 Air LOR DS (120 mm) | – | – | Setup → |
| 29 VR | SR Suntour XCR32 Air LOR DS (100 mm) | – | – | Setup → |
| 29 VRS | SR Suntour XCR32 Boost Air LOR DS (120 mm) | – | – | Setup → |
How it compares
With 100–120 mm of fork travel, the Vitus Nucleus is on the shorter side; the median of the 17 comparable bikes in the “trail hardtail” category is 130 mm. On travel, it slots in between the Vitus Rapide FS and the Vitus Sentier in the Vitus range. Vitus builds the frame from aluminium.
Every build uses a SR Suntour fork. The fork line-up ranges from the Suntour Raidon 32 to the SR Suntour XCR32 Boost Air LOR DS. Depending on build or size, the wheels are 27.5 / 29.
Setup notes for this spec
- Hardtail: only the fork needs setting up. With no rear suspension, rear tyre pressure is the key adjustment for comfort and grip.
Target SAG for the Vitus Nucleus
The table converts the recommended SAG percentages into millimetres, so you can check them with the O-ring directly on the stanchion. Adjust the air pressure until the value is right. If Vitus specifies its own target SAG for your model, that takes priority.
120 mm fork (Nucleus, 27 VR, 27 VRS, 27 VRW Womens, 29 VRS)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 20 mm |
| Trail | 20 % = 24 mm |
| Enduro / rough | 22 % = 26 mm |
| Bike park | 20 % = 24 mm |
100 mm fork (29 VR)
| Riding style | Fork SAG |
|---|---|
| XC / touring | 17 % = 17 mm |
| Trail | 20 % = 20 mm |
| Enduro / rough | 22 % = 22 mm |
| Bike park | 20 % = 20 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. Stock tyres: Maxxis Ardent / Maxxis Ardent; Maxxis Forekaster / Maxxis Forekaster.
| 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
You will find a guide value for air pressure on the fork sticker or in the suspension makers’ charts. Our calculator also takes riding style and rebound into account. In the end, measured SAG is what counts.