The G2UT controller for the 2025 KuKirin G2 Ultra has separate front and rear motor connections in a single assembly. The black connector housing carries three screw-type phase terminals for each motor and shared +/− battery terminals. A ribbed aluminium base dissipates heat and includes a mounting tab.
Compatibility
For the 2025 KuKirin G2 Ultra with matching G2UT electronics. Compare the controller designation, 48 V rating, complete connector layout, software revision and mounting before ordering. Production batches can use different electronics; fitment for the KuKirin G2, G2 Max or G2 Master is unconfirmed.
Technical specifications
| Model and version | KuKirin G2 Ultra, 2025 |
|---|---|
| Controller designation | G2UT |
| Rated voltage on label | 48 V |
| Current limit on label | 25 ± 1 A; the label does not specify the current for each motor |
| Motor connections | Separate Front and Rear groups; 3 Blue/Green/Yellow screw-type phase terminals each |
| Power connections | + and − screw terminals |
| Signal connections | Front Hall, Rear Hall, 8 Pin, Tail Light and Motor line; compare layout with the photos |
| Approximate overall dimensions including tab | 151.6 × 142.5 × 50.5 mm |
| Housing height excluding tab | approximately 130.6 mm |
| Mounting slot shown | approximately 6.5 × 8.5 mm |
| Net weight shown in supplier photo | approximately 677 g |
| Versions on the photographed label | Firmware JBWC6P V1.4; software RND4825-V1.10 |
Package contents
1 G2UT controller in its housing and 3 protective covers for the power terminals. A separate wiring harness, battery and display are not included.
Installation and checks
- Switch off the scooter and disconnect the battery. Photograph all connections and check the front and rear motor labels.
- Preserve power polarity, phase and Hall wiring assignments, and the intended mounting of the heat sink. Fit the protective covers and restore the deck cover seal.
- Check both motors, the display and motor cut-off when braking after replacement. Do not change current settings based on this label; electrical compatibility and operation should be checked by a qualified technician.
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