KuKirin G2 Ultra Upgrades: 3D-Printed Fixes for Factory Flaws
The KuKirin G2 Ultra is a powerful machine. Dual 800W motors, 50 km/h speed, and a hill-climbing beast. But it has two well-known design flaws — and the community has solved them with 3D printing.
This guide covers the factory flaws, the 3D-printed fixes, and other printable upgrades that make the G2 Ultra even better.
Quick Specs
| Feature | Detail |
|---|---|
| Motors | Dual 800W (1600W total) |
| Battery | 48V 18Ah |
| Top Speed | 50 km/h |
| Real-World Range | 30-40 km |
| Climbing | ≤26° slope |
| Weight | 30.4 kg |
The Factory Flaws
Flaw 1: No Front Fender
The G2 Ultra comes with no front fender at all. Mud, water, and debris are thrown directly onto the scooter body and your legs. After even a short ride on wet roads, your scooter will be covered.
Flaw 2: Rear Fender Gap
The rear fender has a large gap, allowing mud and water to spray through. This means the suspension, springs, and motor area get coated in grime with every ride.
The Cost
Without these fenders, you are looking at:
-
Regular cleaning to prevent corrosion
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Potential damage to suspension components
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Mud and water on your clothes and legs
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Reduced resale value from wear
The 3D-Printed Fixes
Fix 1: Front Fender — Zip-Tie Install
The community has created a 3D-printable front fender that solves the problem completely.
| Detail | Information |
|---|---|
| One piece | |
| Install | Zip-tied in place — no tools or drilling needed |
| Material | ASA recommended (UV and weather resistant) |
Fix 2: Extended Rear Fender
The rear fender gap is fixed with a printable extension.
| Detail | Information |
|---|---|
| Install | Clips onto the existing fender or mounts with zip ties |
| Function | Closes the gap, keeps mud off suspension |
Important: G2 2024 models may not fit 2025/2026 models. Check the model year before printing or buying.
Community-Found G2 Ultra Upgrades
Tesla-Style Battery Display
A printable mount for a Tesla-style battery percentage display allows you to see exact remaining charge — more accurate than the built-in indicator.
Kickstand and Hook
Printable kickstand mods for better stability when parked, and a hook for carrying bags or hanging the scooter.
Full 3D Scan
A full 3D scan of the G2 Ultra is available for reference, allowing custom mod designs.
Printable Parts Summary
Printed vs Bought
Frequently Asked Questions (FAQ)
Q1: Does the G2 Ultra come with a front fender?
No — it has no front fender at all. Mud and water spray directly onto the scooter and rider.
Q2: How do I install the 3D-printed front fender?
Zip ties — no tools or drilling required. The fender is printed in one piece and simply zip-tied in place.
Q3: What material should I use for printing?
ASA is recommended — it is UV-resistant and weatherproof, perfect for outdoor use.
Q4: Are the G2 2024 fenders compatible with 2025/2026 models?
Multiple users report that G2 2024 fenders do not fit 2025/2026 models.
Q5: Do these fenders work on the G2 Ultra specifically?
Some users report compatibility issues with the G2 Ultra, particularly with the front fender spacing.
Q6: Where can I find the 3D print files?
The files are available on community drives and MakerWorld.
Conclusion: A Few Prints, a Much Better Scooter
The KuKirin G2 Ultra is a powerful, capable scooter. The fender flaws are easy to fix with 3D-printed parts. A few hours of printing and a few minutes of install turns a great scooter into an even better one.
| Upgrade | Impact |
|---|---|
| Front fender | No more mud on you or the scooter |
| Rear fender extension | Suspension stays cleaner, lasts longer |
| Tesla display | Know your exact battery level |
| Hook | Carry bags easily |