Transition Regulator SX Carbon XT E-Mountain Bike 2025

Meet the Transition Regulator SX Carbon XT E-Mountain Bike, a mixed-wheel marvel that brings maximum mayhem to every trail. Powered by Bosch’s incredibly lightweight Performance Line SX motor, this playful e-MTB delivers 55nm of torque with a geometry that balances power and maneuverability on the descent. Its 400wh battery offers enough juice for everyday trail riding with the option of a 250wh range extender for bigger days – perfect for riders trying to strike the right balance between weight and range.

Carbon Fiber Frame
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Lightweight and incredibly strong, Transition's carbon framesets are known for durability and versatility.

Travel
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160mm Front / 150mm Rear

Wheel Size
–
Mixed Wheel (29" Front / 27.5" Rear)

250wh Range Extender Compatible
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MD-XL sizes only. Sold separately.

Bosch Wireless Two Button Mini Remote

Top Tube Mounted System Controller LED Display

Specs

• Biking Type:
  Mountain

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  Biking Type

  Mountain
  Mountain bikes are built for tackling rough terrain with frames made of durable materials like aluminum or carbon fiber, ensuring stability and maneuverability. They feature suspension to absorb impacts from rocks, roots, and drops, providing a smoother ride.

• Used For:
  Trail

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  Used For

  Trail

  Trail bikes are the quintessential “mountain bikes.” If you’re heading into the woods expecting to do it all on two wheels – climbing, technical sections, AND fun descents – you’re looking for a trail bike.

• Suspension:
  Full Suspension

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  Suspension

  Full Suspension

  Engineered to tackle the most challenging terrain with enhanced comfort and control. Unlike hardtail bikes, full suspension bikes feature both front and rear suspension systems that allow the wheels to move independently from the frame.

• Gearing:
  2 x 12

• Frame Material:
  Carbon

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  Frame Material

  Carbon

  Carbon is a composite frame material. Unlike metals, carbon is composed of fibrous strands woven into a grid and bonded with epoxy. Carbon is favored by many for its lightness and stiffness but its complexity in fabrication makes it the most expensive option.

• Water Bottle Mounts:
  1

• Fork:
  RockShox Lyrik Ultimate

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  Fork

  RockShox Lyrik Ultimate

  Fine-tune your ride and queue up the playlist. Like the words to your favorite song, Lyrik is ready to rock wherever you ride, from familiar home trails to alpine explorations. Built on a deep foundation of adventure, Lyrik is the most versatile fork in RockShox lineup. With the perfect range of travel fro an all-mountain workhorse, Lyrik priotiized weight while maintaining that all-critical stiffness and prowess on the descents. Time to press play.

• Stanchion Diameter (mm):
  35

• Fork Travel (mm):
  160

• Rear Shock:
  Rockshox Super Deluxe Ultimate

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  Rear Shock

  Rockshox Super Deluxe Ultimate

  In it to win it? Super Deluxe Ultimate is the smart bet for the podium. Packed to the hilt with fine-tuning adjustments that meaningfully improve suspension performance, it’s the most advanced shock RocShox have ever made. Pioneering one of the most impactful innovations in damper history, the new RC2T damper allows for 100% independent High Speed and Low Speed Compression adjustments, rounding out an arsenal of elite technology.

  Shock Adjustments – Separate and Independent Open and Threshold Pistons / Low Speed Compression Adjustment / Rebound Adjustment / Air Spring Pressure

• Rear Travel (mm):
  150

• Drive Unit:
  Bosch Performance Line SX

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  Drive Unit

  Bosch Performance Line SX
  The PerformanceLine SXis the lightest and most compact drive unit fromBosch eBikeSystems When riding in a sporty style with a high cadence, it supports you disproportionately to your performance with peaks of up to 600 watts of motor power. With its sensitive and reactive response behavior, it is ideal for all those who ride in sporty style with electric support and are looking for a training effect

• Battery:
  Bosch CPT 400Wh

• Shifters:
  Shimano XT

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  Shifters

  Shimano XT
  Shimano's Rapidfire Plus Deore XTshift lever delivers light and responsive front shifting for improved control out on the trail.

• Rear Derailleur:
  Shimano XT M8100, 12-Speed

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  Rear Derailleur

  Shimano XT M8100, 12-Speed
  The Shimano XT M8100 series of derailleurs brings a new level of drivetrain silence thank to decreased tension in the low gear position and an added bumper on the pulley cage. Larger 13T pulleys increase efficiency and chain management while compatibility with Shimano's 12-speed cassettes boost range.

• Crankset:
  e*thirteen Helix Race Direct Mount, 34t

• Cassette:
  Shimano XT M8100, 10-51t

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  Cassette

  Shimano XT M8100, 10-51t
  With its Beam Spider construction, the Deore XT M8100 cassette shaves weight while increasing Shimano's MTB gearing range another gear. Using a Micro Spline freehub body and HYPERGLIDE+ tooth profile, these 10-45 and 10-51T cassettes deliver advanced shifting performance.

• Chain:
  Shimano XT M8100

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  Chain

  Shimano XT M8100
  The M8100 chain provides enhanced chain retention thanks to an extended portion of the inner plate. The chain features quick-link assembly and SIL-TEC treatment for extended offroad durability.

• Pedals:
  Not Included

• Brake Levers:
  TRP DH-R EVO

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  Brake Levers

  TRP DH-R EVO
  The new DH-R EVO brings maximum power, unparalleled modulation and optimized heat management to heavy 29er DH bikes, long travel Enduro rigs and the new era of E-MTB charging. The G-Spec DH-R brake has been re-designed to the all-new DH-R EVO. A new caliper, new lever, new hose, new oil, new pads, new 223/2.3mm rotors and a new hydraulic leverage ratio, creates a new performance standard that fuels the TRP brand.

• Brake Calipers:
  TRP DH-R EVO

• Rotors:
  TRP R1 2.3, 203mm

• Headset:
  FSA NO.57E

• Handlebar:
  OneUp Carbon | SM (800×20) MD/LG/XL (800×35)

• Bar Tape/Grips:
  ODI Elite Flow Lock-On

• Stem:
  RaceFace Aefect R (40mm)

• Saddle:
  SDG Bel Air V3 LUX

• Seatpost:
  OneUp Dropper

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  Seatpost

  OneUp Dropper
  Known for its no-nonsense smooth cable actuation, short overall length, and easy serviceability, the OneUp Dropper is a solid choice for dependable and customizable performance.

• Hubs:
  DT Swiss H 1900 Spline 30

• Rims:
  WTB ST i30

• Front Tire:
  Maxxis Assegai 2.5" | 3C, EXO+

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  Front Tire

  Maxxis Assegai 2.5" | 3C, EXO+
  Greg Minnaar’s signature tire – the Maxxis Assegai – provides tenacious, predictable grip across the entire profile no matter the lean angle. The Assegai can be used front and rear for a surefooted feel or as a front paired with a faster rolling rear tire.

  • EXO+: Durable 60 TPI casing, legendary EXO puncture protection in the sidewalls, and a small butyl insert around the bead to protect from pinch flats and help prevent rim damage.
• Rear Tire:
  Maxxis Minion DHR II 2.4" | 3C, EXO+

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  Rear Tire

  Maxxis Minion DHR II 2.4" | 3C, EXO+
  With side knobs borrowed from the legendary Minion DHF, but widened to provide more support, the DHR II corners like no other. The center tread features ramped leading edges to improve acceleration and sipes to create a smooth transition when leaning the bike. Paddle-like knobs on the center tread dig in under hard braking and help keep the bike under control.

  • EXO+: Durable 60 TPI casing, legendary EXO puncture protection in the sidewalls, and a small butyl insert around the bead to protect from pinch flats and help prevent rim damage.
• Warranty:
  Limited Lifetime (Frame), 2 Years (Drive Unit)

Other Notes

Transition products can only be shipped within the United States

Bike Spec and Price Subject to Change