Transition Regulator CX: suspension setup & specs
The Transition Regulator CX is an e-MTB for trail and touring with 160 mm of fork travel and 150 mm at the rear. It is powered by Bosch Performance Line CX. This page lists the 3 current builds with fork, shock and shock size and gives matching starting values for SAG and tyre pressure.
Calculate the setup for your Transition Regulator CX →
All builds
Fork, shock, shock size (eye-to-eye length × stroke) and rear travel, motor, weight and price according to the manufacturer. Wheel size: MX.
| Build | Fork | Shock | Shock size | Rear travel | Motor | Weight | RRP | Calculator |
|---|---|---|---|---|---|---|---|---|
| Eagle 70 | RockShox Domain Gold RC (160 mm) | RockShox Super Deluxe Base | 205x60 | 150 mm | Bosch Performance Line CX 600 Wh | – | – | Setup → |
| Eagle 90 | RockShox ZEB Ultimate (160 mm) | RockShox Super Deluxe Ultimate | 205x60 | 150 mm | Bosch Performance Line CX 600 Wh | – | – | Setup → |
| XT Di2 | Fox 38 Factory Grip X2 (160 mm) | Fox Float X2 Factory | 205x60 | 150 mm | Bosch Performance Line CX 600 Wh | – | – | Setup → |
How it compares
Up front the Transition Regulator CX runs 160 mm – 10 mm more than the 150 mm median we calculated from 101 bikes in the “e-MTB for trail and touring” category. The rear offers 150 mm, 10 mm less than the front. Of Transition’s e-mountain bikes, the Transition Regulator CX offers the least travel up front. Transition builds the frame from carbon.
Depending on the build, fork and shock come from FOX and RockShox. In total, 3 different forks are used, from the RockShox Domain Gold RC to the Fox 38 Factory Grip X2. It is powered by Bosch Performance Line CX with a 600 Wh battery.
Setup notes for this spec
- Air fork (RockShox Domain Gold RC): 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 and RockShox 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 (RockShox Super Deluxe Base): measure SAG in your riding position, ideally with a helper holding the bike. Cycle the shock a few times after every pressure change.
- e-MTB: because of the extra weight, start with slightly more tyre pressure – the surcharge is already built into the table below.
Target SAG for the Transition Regulator CX
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 Transition take priority.
160 mm fork, 60.0 mm shock stroke (all builds)
| Riding style | Fork SAG | Shock SAG |
|---|---|---|
| XC / touring | 17 % = 27 mm | 24 % = 14.4 mm on the shock shaft |
| Trail | 20 % = 32 mm | 28 % = 16.8 mm on the shock shaft |
| Enduro / rough | 22 % = 35 mm | 30 % = 18.0 mm on the shock shaft |
| Bike park | 20 % = 32 mm | 27 % = 16.2 mm on the shock shaft |
How to measure SAG is explained in our guide SAG setup.
Tyre pressure starting values
For 2.50″ wide tyres, tubeless with a trail casing, including the e-MTB surcharge. With an inner tube about 0.2 bar (2.9 psi) more, with an insert about 0.1 bar (1.5 psi) less. Stock tyres: Maxxis Assegai 3C MaxxGrip EXO+ (2.5) / Maxxis Minion DHRII 3C MaxxTerra DD (2.4); Schwalbe Magic Mary, Trail, Radial, Ultra Soft (2.5) / Schwalbe Albert, Trail, Radial, Soft (2.5).
| Ready-to-ride weight | Front | Rear |
|---|---|---|
| 60 kg | 1.48 bar (21 psi) | 1.68 bar (24 psi) |
| 70 kg | 1.60 bar (23 psi) | 1.80 bar (26 psi) |
| 80 kg | 1.72 bar (25 psi) | 1.92 bar (28 psi) |
| 90 kg | 1.84 bar (27 psi) | 2.04 bar (30 psi) |
| 100 kg | 1.96 bar (28 psi) | 2.16 bar (31 psi) |
| 110 kg | 2.08 bar (30 psi) | 2.28 bar (33 psi) |
| 120 kg | 2.20 bar (32 psi) | 2.40 bar (35 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.