Pivot Mach 4 SL: suspension setup & specs
The Pivot Mach 4 SL is a cross-country full-suspension bike with 120 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 Pivot Mach 4 SL →
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 |
|---|---|---|---|---|---|---|---|
| Expert XT Di2 | Fox Performance 34SL (120 mm) | Fox Performance Float | – | 120 mm | – | – | Setup → |
| Pro X0 Eagle Transmission | Fox Factory 34SL (120 mm) | Fox Factory Float | – | 120 mm | – | – | Setup → |
| Ride Eagle 70/90 | Fox Performance 34SL (120 mm) | Fox Performance Float | – | 120 mm | – | – | Setup → |
| Team XX Eagle Transmission | Fox Factory 34SL (120 mm) | Fox Factory Float | – | 120 mm | – | – | Setup → |
| Team XX Eagle Transmission | Flight Attendant | Rock Shox SID Ultimate Flight Attendant (120 mm) | Rock Shox SIDLuxe Ultimate Flight Attendant | – | 120 mm | – | – | Setup → |
How it compares
120 mm at the fork almost exactly matches the 120 mm median of the 23 bikes in the “cross-country full-suspension bike” category in our database. Travel is the same front and rear at 120 mm each. Among Pivot’s mountain bikes, the Pivot Mach 4 SL has the shortest fork travel. The frame is made of carbon.
For suspension, Pivot combines components from FOX and RockShox. The fork line-up ranges from the Fox Performance 34SL to the Rock Shox SID Ultimate Flight Attendant.
Setup notes for this spec
- Fork (Fox Performance 34SL): air goes in through the valve on top of the left leg. After every change, compress the fork firmly a few times before measuring SAG.
- Rebound: turn the red FOX and RockShox adjuster fully closed first and count clicks from there – that way you can note settings and restore them later.
- 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 Pivot Mach 4 SL
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 Pivot specifies its own target SAG for your model, that takes 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. Stock tyres: MAXXIS REKON 29X2.4 3C TR EXO 120TPI Maxxis Rekon Race 29" x 2.4" TR, EXO, 120 TPI; Maxxis Ardent Race 29" x 2.2" TR, EXO, 120 TPI Maxxis Ardent Race 29" x 2.2" TR, EXO, 120 TPI; Maxxis Rekon 29X2.4 3C TR, EXO, 120TPI Maxxis Rekon Race 29" x 2.4" TR, EXO, 120 TPI.
| 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.
Sources
- Mach 4 SL Expert XT Di2
- Mach 4 SL Pro X0 Eagle Transmission
- Mach 4 SL Ride Eagle 70/90
- Mach 4 SL Team XX Eagle Transmission
- Mach 4 SL Team XX Eagle Transmission | Flight Attendant