The Transition Regulator SX is Transition 's 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 Transition 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 Transition 's 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.
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Product |
Transition Regulator SX Deore E-Bike |
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Model Year |
2025 |
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Riding Type |
Enduro / All-Mountain |
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Rider |
Unisex |
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Sizes and Geometry |
SM MD LG XL |
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Wheel Size |
27.5" (650b) 29" Other: Mullet |
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E-Bike Class |
Class 1: Pedal Assist (Pedelecs) |
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Motor |
Bosch Performance Line SX, 55 Nm max torque, 600 W peak power |
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Battery |
Bosch CompactTube, integrated Option: Bosch Range Extender, 250 Wh (sizes MD-XL only) |
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Battery Capacity |
400 Wh |
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Display/Remote |
Bosch System Controller top tube integrated LED display, Bosch Wireless Mini Remote |
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Modes |
Turbo, eMTB, Tour+, Eco, Walk Assist |
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Max Speed with Assist |
USA/Canada/New Zealand: 20 mph (32.2 km/h) Other: 15.5 mph (25 km/h) |
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Frame Material |
Carbon Fiber |
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Frame Material Details |
Carbon front and rear triangles, molded chainstay protection |
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Rear Travel |
150mm |
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Rear Shock |
RockShox Super Deluxe Select, trunnion mount, 205mm length x 60mm stroke |
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Fork |
RockShox Lyrik Base, 35mm stanchions |
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Fork Travel |
160mm |
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Head Tube Diameter |
Tapered, 1.125" top, 1.5" bottom |
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Headset |
FSA No.57E, ZS44 upper, ZS56 lower |
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Handlebar |
Race Face Chester, 780mm width, 35mm clamp diameter Rise: 20mm (SM), 35mm (MD-XL) |
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Stem |
Race Face Aeffect R, 40mm length, 35mm bar clamp |
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Grips |
ODI Elite Flow, lock-on |
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Brakes |
Shimano Deore M6120, 4-piston, Shimano Rt66 203mm rotors |
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Brake Levers |
Shimano Deore M6100 |
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Drivetrain |
1x |
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Shifters |
Shimano Deore M6100, 12-speed, I-SPEC EV mounting bracket |
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Front Derailleur |
None |
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Rear Derailleur |
Shimano Deore M6100, 12-speed, SGS cage |
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Chainguide |
Transition integrated upper slider |
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Cranks |
Race Face Aeffect R E-MTB, 160mm length |
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Chainrings |
e*thirteen Helix Race, direct mount, 32 tooth |
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Pedals |
None |
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Chain |
Shimano Deore M6100, 12-speed |
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Cassette |
Shimano Deore M6100, 12-speed, 10-51 tooth |
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Rims |
WTB ST i30 Alloy, 30mm inner width |
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Hubs |
Novatec, D791SB 15mm x 110mm (Boost) front, D902SB 12mm x 148mm (Boost) rear with MICRO SPLINE driver |
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Spokes |
DT Swiss Competition |
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Tires |
Front: Maxxis Assegai, 3C compound, EXO casing, 29" x 2.5" Rear: Maxxis Minion DHR II, 3C compound, EXO casing, 27.5" x 2.4" |
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Saddle |
SDG Bel-Air V3 |
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Seatpost |
SDG Tellis dropper Drop: 150mm (SM), 170mm (MD), 200mm (LG), 230mm (XL) |
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Seatpost Diameter |
31.6mm |
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Seatpost Clamp |
Single bolt, 37.0mm |
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Rear Dropout / Hub Dimensions |
12mm x 148mm (Boost) |
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Max. Tire Size |
27.5" x 2.5" |
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Bottle Cage Mounts |
One inside front triangle |
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Colors |
Stormshadow Grey, Madrone Gold |
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Warranty |
Lifetime frame, 2 years motor and battery |
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Weight |
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Miscellaneous |
• GiddyUp Four-Bar Horst-Link rear suspension design • Mixed ("Mullet") wheels: 29" front, 27.5" rear • Rear travel can be increased to 160mm with longer-stroke (65mm) shock • Internal cable routing • Custom charge port cover with integrated range extender cable management • SRAM UDH (Universal Derailleur Hanger) • Power settings customizable via Bosch eBike Flow Mobile App • Includes Bosch battery charger • Includes tubeless valves and sealant • Photos may show alternate build |
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