Transition Regulator SX Carbon XT 2025 Electric Bike

The Regulator SX is our all-mountain eMTB designed to provide a nimble and responsive ride. No trail is too tame or too gnarly for the dedicated mixed-wheel platform with 150mm rear and 160mm front travel and geometry that promotes agility and playfulness. The Regulator SX will be the choice for riders looking for a chassis that excels in a variety of terrain with the added assistance of a Bosch SX drive unit delivering 55nm of torque from a 400wh battery. Coupled with our SBG geometry, you have an eMTB experience close to that of non-assisted bikes. This combination provides the best range-to-weight ratio for those who value lighter ride characteristics, giving you the best of both worlds with one of the most reliable and intuitive motor systems available on the market. For those looking for extra range, the Bosch range extender will take you up to 650wh for all day adventures.

Features

150 / 160mm Mixed Wheels

The dedicated mixed-wheel platform with 150mm rear and 160mm front travel make the Regulator CX nimble and responsive while delivering powerful assistance for the steepest of climbs. With a 64.5 degree headtube angle and short, 27.5" wheel specific chainstays, we were able to make the Regulator one of the most maneuverable eMTBs we've ever ridden. This keeps the ride fun and engaging on everything from smooth flow trails to steep tech. A geo adjust chip in the lower shock mount allows riders to fine tune geo to their preferences.

High Power to Weight

The Bosch CX system delivers the highest power-to-weight ratio possible. Perfect for riders who want lighter ride characteristics from their eMTB that excels in a wide variety of terrain. Complete builds come in at just over 47lbs while still delivering 85Nm of torque for powerful assistance.

Bosch Performance CX Motor

Powered by the Bosch CX system, the Regulator gets the legendary reliability of Bosch in a lightweight package giving you 85nm 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.

Specifications

Frame and Forks

• Frame: Regulator SX Carbon 150mm
• Forks: RockShox Lyrik Base (160mm)
• Rear Shock: RockShox SuperDeluxe Select (205 x 60mm)
• Headset: FSA No.57E

Drivetrain

• Crankset: E*Thirteen Helix Race Direct Mount (32 Tooth)
• Chainguard: Transition Integrated Top Guide
• Rear Derailleur: Shimano XT M8100 SGS 12 Speed
• Cassette: Shimano XT M8100 (10-51 Tooth)
• Chain: Shimano XT M8100

Braking/Shifting

• Front Brake: TRP R1 2.3, 203mm
• Rear Brake: TRP R1 2.3, 203mm
• Brake Levers: TRP EVO PRO
• Shifter Levers: Shimano XT M8100

Wheels

• Rims: DT Swiss XM 481
• Front Hub: DT Swiss XM 481
• Rear Hub: DT Swiss XM 481
• Spokes: DT Swiss Competition
• Front Tyre: Maxxis Assegai 3C EXO+ (2.5")
• Rear Tyre: Maxxis Minion DHRII 3C EXO+ (2.4")

Finishing Kit

• Handlebars: OneUp Carbon, Small 800 x 20mm), Medium / Large / X-Large (800 x 35mm)
• Grips: ODI Elite Flow Lock-On
• Stem: ANVL Swage (40mm)
• Seatpost: OneUp Dropper Post, Small (150mm), Medium (180mm), Large (210mm), X-Large (240mm)
• Saddle: SDG Bel Air 3 LUX

Electric Power

• Motor: Bosch Performance Line SX (BDU31)
• Battery: Bosch CompactTube (400Wh)
• Display: Bosch System Controller
• Controller: Bosch Wireless Mini Remote