Bosch Performance Line CX Motor / Drive unit
What the checker says43will not fit2worth knowing
Run variant by variant through the e-MTB builder’s own engine. Every sentence below is the checker’s, unedited. Nothing here says this part fits your bike; it says what it does and does not fit among the parts we hold.
Checked against 510 verified e-MTB parts in this catalog. 485 produced no finding of any kind. Each variant produces 19 to 24 distinct errors and 0 distinct warnings.
- info · this part aloneNo frame picked yet: Bosch Performance Line CX (BDU374Y) needs a frame built around the bosch-performance-cx-gen4 drive unit - on an e-MTB the motor is the bottom bracket, so the frame decides the motor. Applies to 1 of 2 variants.
- info · this part aloneNo frame picked yet: Bosch Performance Line CX (BDU384Y) needs a frame built around the bosch-performance-cx drive unit - on an e-MTB the motor is the bottom bracket, so the frame decides the motor. Applies to 1 of 2 variants.
Will not fit
Emtb frame motor, Frame. 25 more findings from the same check, on up to 1 of the 16 verified frames each.
Emtb crank motor, Cranks. 12 more findings from the same check, on up to 1 of the 21 verified cranks each.
Emtb display motor, Display / Controller. 6 more findings from the same check, on up to 1 of the 7 verified display / controllers each.
Open a variant in the builder to see the ones that apply to your own parts.
Worth knowing
- Worth knowinginfo · FrameDisplay / controller: Bosch Performance Line CX (BDU374Y) is a bosch-smart-system drive unit - any display or remote must be from that same system. Many e-MTBs ship with one fitted. On 16 of the 16 verified frames in this catalog. Applies to 1 of 2 variants.
- Worth knowinginfo · FrameDisplay / controller: Bosch Performance Line CX (BDU384Y) is a bosch-smart-system drive unit - any display or remote must be from that same system. Many e-MTBs ship with one fitted. On 16 of the 16 verified frames in this catalog. Applies to 1 of 2 variants.
$900.00 MSRP·2812 to 2903 g
What the maker states
- System
- Drivetrain system bosch-smart-system
- Crank interface
- Isis
- Assist
- Class full-power
- Power rated
- Rated power 250 W
- Mount
- Bosch-performance-cx (on 1 of 2 variants); Bosch-performance-cx-gen4 (on 1 of 2 variants)
- Torque
- 120 Nm of torque (on 1 of 2 variants); 85 Nm of torque (on 1 of 2 variants)
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec.
2 verified variants
| Variant | Mount | Torque | Power peak | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|---|---|---|
| Performance Line CX (BDU384Y) | bosch-performance-cx | 120 Nm of torque | Peak power 750 W | $900.00 | 2812 g | maker’s page | 2026-07-29 | Build with this |
| Performance Line CX (BDU374Y) | bosch-performance-cx-gen4 | 85 Nm of torque | Peak power 600 W | $900.00 | 2903 g | maker’s page | 2026-08-01 | Build with this |
The rest of what the maker states1 stated
- Peak power 600 W (on 1 of 2 variants); Peak power 750 W (on 1 of 2 variants).
Source: each variant links the maker’s own page in the table above. Last checked 2026-07-29 to 2026-08-01.
Checked against
The checker ran this model against every verified part below that it has a slot for, the same way it checks a build in the builder. What follows is the verdict it actually produced for that specific pairing — not a recommendation, and not a guarantee any of these parts fits your own bike.
- 9point8 Fall Line 30.9 / 125mm (INLINE) (Dropper Post) No conflicts found
- BikeYoke Divine 2.0 Dropper Post 31.6 / 125mm (Dropper Post) No conflicts found
- BikeYoke Divine SL Dropper Post 30.9 / 80mm (Dropper Post) No conflicts found
- BikeYoke Divine SL Rascal Dropper Post 30.9 / 80mm (Dropper Post) No conflicts found
- BikeYoke Revive 3.0 Dropper Post 30.9 / 125mm (Dropper Post) No conflicts found
- BikeYoke Revive Max 3.0 (34.9) Silver Ltd. Dropper Post 34.9 / 125mm (Dropper Post) No conflicts found
6 of 276 counterparts with a page of their own that the checker actually probed this model against, in alphabetical order by brand and model — never by price, popularity or the verdict itself.