Transition
Transition Regulator SX 2025
Transition Regulator SX 2025
Out of stock
SKU:01.25.11.5201
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Regulators, Mount Up
The all-mountain workhorse is here to delivery fun on every trail
We are proud to introduce our all-new eMTB platform, the Regulator! The Regulator ir our all-mountain workhorse designed to provide a fun, nimble and responsive ride. No trail is too tame or too gnarly for the dedicated mixed wheel platform providing 150/160mm travel and geometry that promotes agility and playfulness. The Regulator will be the choice for riders looking for a chassis that excels everywhere with the added assistance of a Bosch drive unit. The Regulator will be available with the Bosch CX drive unit for those looking for higher power and longer range, or the Bosch SX drive unit for those who desire a lighter weight eMTB experience more similar to a regular mountain bike. Both bikes share similar form language, with just small differences between them, read on below to learn more!
Regulator SX
The Bosch Performance Line SX powered Regulator delivers 55 Nm of torque and 600 W of peak power from the 400 Wh battery. This model utilizes an enclosed downtube to create a very sleek, clean looking eMTB that rides and looks more like regular mountain bike. With low weight and sporty geometry, the Regulator XS is all about fun. It powers you uphill, lap after lap, while remaining nimble to let you enjoy every inch of the trail. Jump every root, rail every turn and feel the flow of your favourite singletrack. We are excited to offer a model with a lightweight system that comes backed by the reputation of reliability and worldwide support of Bosch.
Features
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Sizes SM-XL
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Carbon frame, mixed wheel only
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Size specific CS lengths (442 mm SM/MD, 448 mm LG/XL)
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160 mm fork travel, 150 mm rear travel (160 mm compatible with 65 mm stroke shock)
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Top tube mounted system controller LED display
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New head tube cable routing ports: compatible with 0, 1 or 2 cables per side; ideal routing for either right/rear or left/rear brake assemblies
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New chainstay protector design: includes separate cable routing grommet or closed plug for wireless RD
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Custom charge port cover with integrated range extender cable management
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Bosch Performance Line SX BDU31 drive unit: 55 Nm torque, 600 W peak power, 2.0 kg drive unit weight
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Bosch CompactTube 400 Wh fixed battery: uses new 20 Wh 21700 cells for highest energy density
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Does not have a geo-adjust chip. One position lower shock bolt only: 400 Wh battery, 250 Wh range extender compatible with MD/XL sizes (sold separately)
Highlights
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Frame material
Carbon
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Wheelsize
Mixed
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Front travel
160mm
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Rear travel
150mm
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Motor brand
BOSCH
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Max torque
55Nm
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Peak power
600W
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Battery capacity
400Wh
Specifications
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2025 Transition Regulator SX Deore
Frame
SX Carbon
Fork
RockShox Lyrik Base (160mm)
Shock
RockShox SuperDeluxe Select (205x60mm)
Handlebar
RaceFace Chester 35 SM (780x20) MD/LG/XL (780x35)
Stem
RaceFace Aefect R (40mm)
Headset
FSA No.57E
Brakes
Shimano Deore M6120 4 Piston
Front rotor
Shimano RT66 (203mm)
Rear rotor
Shimano RT66 (203mm)
Shifter
Shimano Deore M6100 iSpec EV
Rear derailleur
Shimano Deore M6100 SGS 12sp
Crankset
RaceFace Aeffect R E-MTB (160mm), E*Thirteen Helix Race Direct Mount (32t)
Cassette
Shimano Deore M6100 (10-51t)
Chain
Shimano Deore M6100
Chain guide
Transition Integrated Top Guide
Seatpost
SDG Tellis SM (150mm) MD (170mm) LG (200mm) XL (230mm)
Saddle
SDG Bel Air 3
Front hub
Novatech D791SB
Rear hub
Novatech D902SB
Spokes
Pillar Double Butted
Rims
WTB ST i30
Rear rim
WTB ST i30
Front tyre
Maxxis Assegai 3C EXO/TR (2.5)
Rear tyre
Maxxis Minion DHRII 3C EXO/TR (2.4)
Motor
Bosch Performance Line SX (BDU31)
Battery
Bosch CompactTube
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2025 Transition Regulator SX XT
Frame
SX Carbon
Fork
RockShox Lyrik Ultimate (160mm)
Shock
RockShox SuperDeluxe Ultimate (205x60mm)
Handlebar
OneUp Carbon SM (800x20) MD/LG/XL (800x35)
Stem
ANVL Swage (40mm)
Headset
FSA No.57E
Brakes
TRP EVO PRO
Front rotor
TRP R1 2.3 (203mm)
Rear rotor
TRP R1 2.3 (203mm)
Shifter
Shimano XT M8100
Rear derailleur
Shimano XT M8100 SGS 12sp
Crankset
RaceFace ERA Carbon E-MTB (160mm), E*Thirteen Helix Race Direct Mount (32t)
Cassette
Shimano XT M8100 (10-51t)
Chain
Shimano XT M8100
Chain guide
Transition Integrated Top Guide
Seatpost
OneUp Dropper Post SM (150mm) MD (180mm) LG (210mm) XL (240mm)
Saddle
SDG Bel Air 3 LUX
Front hub
DT Swiss 350 Classic DEG
Rear hub
DT Swiss 350 Classic DEG
Spokes
DT Swiss Competition
Rims
DT Swiss XM 481
Rear rim
DT Swiss XM 481
Front tyre
Maxxis Assegai 3C EXO+ (2.5)
Rear tyre
Maxxis Minion DHRII 3C EXO+ (2.4)
Motor
Bosch Performance Line SX (BDU31)
Battery
Bosch CompactTube
BOSCH Performance Line SX
Powered by the Bosch Performance Line SX system, the Regulator gets the legendary reliability of Bosch in a lightweight package giving you 55nm of torque and 600w peak power. While powerful, the system also provides an incredibly natural feel that delivers power without breaking traction, keeping your momentum and helping you clear technical trails.
BOSCH 400Wh Battery
Enclosed low in the downtube is Bosch's 400wh battery. Perfect for local laps where you want the most maneuverable eMTB in the market.
BOSCH PowerMore Range Extender
Head into the backcountry with the additional 250wh range extender. Custom cable management keeps the connection clean and secure.
Display
Easily control the power modes and view battery life via the wireless Mini Remote and slim System Controller top tube display. This minimal display keeps you focused on the trail ahead, while providing all the necessary info you need to keep riding. Giving you everything you need, and nothing you don't.
BOSCH Flow App
For those looking to dig into the settings, the Bosch Flow app gives you full control and customization. Once paired with your Regulator, you can adjust the power level support and peak power from the convenience of your phone without any wires or a laptop.