Bulls Sonic EVO SX1 UD carbon
Sporty, light and manageable. These are the most striking characteristics of the new Bulls Sonic EVO SX1! The German manufacturer is opening a new trend of lightweight e-bikes with the revolutionary Bosch Performance Line SX motor drive. In combination with the 2kg Bosch CompactTube 400 battery and selected components, this will mean that you will not be able to tell the difference between this e-bike and your classic bicycle at first glance, while you can still use the power of the auxiliary drive.
It can't be left behind in terms of mechanics either - the Bulls Lytro 34 SL will take care of unevenness, the Shimano Deore M6100 group will ensure smooth and precise shifting, and the four-piston Shimano BR-MT420 will guarantee safety.
The Sonic model relies on its proven modern geometry, low-profile tubes and distinctive head for a perfect aesthetic experience and a fully agile, pleasantly maneuverable e-bike.
Bosch Performance Line SX

- New for 2024
- The lightest and most compact drive from Bosch
- The ideal choice for sporty driving
- Weight 2 kg + 2 kg battery CompactTube400
- Possibility to expand battery capacity with PowerMore 250
- Fully compatible with all Bosch SmartSystem functions
Geometry and size selection:
Frame size S | M | L | XL | |
---|---|---|---|---|
For the figure (approx.) | 160 - 172 cm | 168 - 180 cm | 176 - 188 | 184 - 196 |
Seat tube height | 400 | 440 | 470 | 510 |
Top frame tube | 585 | 616 | 643 | 666 |
Head tube | 100 | 110 | 130 | 140 |
Wheelbase | 1158 | 1192 | 1220 | 1244 |
Chain strut | 445 | 445 | 445 | 445 |
Saddle angle | 75 | 75 | 75 | 75 |
Head angle | 67 | 67 | 67 | 67 |
BB-Drop | 62.5 | 62.5 | 62.5 | 62.5 |
Stack | 629 | 638 | 657 | 666 |
Reach | 420 | 450 | 470 | 490 |
Table of technical parameters of the electric bike:
Skeleton
Frame: carbon fiber monocoque, internal cable routing, thru axle, telescopic seatpost ready
Fork: BULLS LYTRO 34 SL LOR Air DS Boost 120 mm
Drive
Motor: Bosch Performance Line SX 25/55 Nm
Display: Bosch Mini Remote and System Controller
Battery: Bosch CompactTube 400
Charger: 2A charger
Cast
Shifter: SHIMANO Deore RD-M6100
Shift lever: SHIMANO Deore SL-M6100, rapidfire+, I-spec-EV
Cranks: N/A
Converter: N/A
Cassette: SHIMANO Deore, CS-M6100 10-51T
Chain: N/A
Brakes: SHIMANO BR-MT420, hydraulic disc brake
Discs: SHIMANO SM-RT30 CL 203 mm, SHIMANO RT-EM300 CL 203 mm
Wheels
Wheel size: 29"
MAVIC E-Crossride 1 CL MS wheels
Tires: SCHWALBE Smart Sam Performance 60-622
Cockpit and seating:
Grips:
Handlebar: BULLS riserbar
Stem: MTB-SLS, CCS Slot Mount ready
Head composition:
Saddle: Prologo Proxim 400
Seat post: LIMOTEC Alpha 1UH 31.6 mm + SL-MT500-IL, 150 mm
MonkeyLink Connect front light (lighting not included)
MonkeyLink Twinlight rear light