G2 Ultra 3D-Printed Upgrades: Fixing Factory Fender 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
-
Potential damage to suspension components
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Mud and water on your clothes and legs
-
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. Multiple users have reported compatibility issues with newer models . Check the model year before printing or buying.
Compatibility Warning
Before printing, note these community reports:
A full 3D scan of the G2 Ultra is available online for reference, allowing custom mod designs .
Printable Parts Summary
Printed vs Bought
| Option | Pros | Cons |
|---|---|---|
| Print yourself | Customisable, cost-effective | Need a 3D printer and filament |
| Order online | Ready to install, no printer needed | Waiting time, shipping cost |
| Buy aftermarket | Simple, no hassle | May not fit 2025/2026 models |
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 .
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 |
| Hook | Carry bags easily |