1. Front wheel
Show disc side, fork structure and caliper mount.
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NUTT 4‑Piston Hydraulic Brake Caliper with Built‑In Power Cutoff, Perfect Replacement for E‑Scooters & E‑Bike
€78,99 EUR
€102,00 EUR
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Free Shipping (7-14 Business Days Delivery)
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All Prices Include VAT – No Extra fees
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CE，DGT Certified – Compliant With EU Regulations
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1-Year Warranty Included
4‑Piston Hydraulic Brake
Send These Photos If Unsure
Not sure which version fits? Send us these three photos and our mechanics will confirm the correct setup.
2. Rear wheel
Show rear disc side, swingarm area and caliper direction.
3. Brake connector
Show the power-off sensor connector shape and pins.
NUTT Dual Piston
Controlled braking for your electric scooters and e-bikes upgrade
NUTT system uses an open hydraulic design with dual-piston calipers, forged aluminum construction, and mineral brake fluid.
- Open system, dual piston
- Forged aluminum caliper body
- Internal or swivel hose routing
- Heat-dissipating pad compatibility
- Adjustable reverse-version caliper
- Black forged aluminum lever
Product Specifications
Confirm the final configuration and SKU before purchasing.
| Applicable Model | ALL Electric scooters and e-bikes Models |
|---|---|
| Brake Type | 4-Piston Hydraulic Disc Brake |
| Safety Feature | Built-in motor power-off sensor |
| Braking Performance | Stable & powerful for daily & high-speed rides |
| Compatible Rotor Sizes | 140mm / 160mm |
| Supported Vehicles | E-bike, E-scooter, KuKirin, Joyor,Dualtron, Kaabo Mantis series |
| Sealing Design | Full leak-proof sealed hydraulic structure |
| Installation Status | Pre-bled & fully pre-assembled |
| Application Scenario | OEM replacement, aftermarket upgrade |
What's Included
Package contents vary by selected position.
Position 01
Front Brake
- Front dual-piston hydraulic caliper
- Matching hydraulic brake lever
- Front hydraulic hose (1350mm)
- Pre-installed brake pads
- Mounting hardware
Spacer is included only when selected.
Position 02
Rear Brake
- Rear dual-piston hydraulic caliper
- Matching hydraulic brake lever
- Rear hydraulic hose (2200mm)
- Pre-installed brake pads
- Mounting hardware
Confirm swingarm clearance before ordering.
Recommended
Front & Rear Set
- Front & Rear dual-piston calipers
- Left & Right brake levers
- Front (1350mm) & Rear (2200mm) hoses
- Brake pads for both positions
- Complete mounting hardware set
Best value for full braking system upgrade.
Fitment reminder: Adapter cables, rotor spacers, and washers may vary by scooter model and production year. Contact us if unsure.
Choose the Right Braking System
Compare the key differences between standard mechanical brakes and the NUTT 4-piston hydraulic brake system.
Ordinary Brake
Standard cable-driven system
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Braking Performance: Provide only basic braking performance
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Sensor Feature: Performance not consistent
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Maintenance: Cable stretching needs regular adjust
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Braking Experience: Need more hand force for braking
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Application: For casual riding
NUTT Hydraulic Brake
Advanced 4-piston hydraulic system
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Braking Performance: Provide powerful and consistent stopping
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Sensor Feature: Stable performance at high-speed riding
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Maintenance: Self-adjusting hydraulic pressure
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Braking Experience: Smooth one-finger braking control
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Application: For electric scooters and e-bikes
Installation & safety
Installation Steps & Safety Instructions
Follow the fitment checks below before installing or riding with a NUTT hydraulic brake upgrade.
Confirm the correct configuration
Check the scooter model, production version, front or rear position, rotor side, mounting type and brake connector. Confirm whether a spacer, adapter cable or original washer is required.
Inspect the package before fitting
Make sure the caliper, lever, hose, brake pads and selected hardware match the purchased configuration. Do not install damaged parts or discard model-specific hardware before fitment is confirmed.
Remove the original brake safely
Secure the scooter before removing the original brake. Protect the rotor and hose area from contamination, and keep any original washers or model-specific parts for comparison.
Install the lever and caliper
Mount the lever and caliper using the correct hardware for the selected configuration. Keep the caliper aligned with the rotor and do not force parts into position.
Route the hose and check clearance
Route the hose away from sharp edges, moving parts and folding points. Check the gap around the caliper, rotor, fork, swingarm, tyre and other components before final tightening.
Test before normal riding
Check lever operation, rotor rubbing, bolt security and motor power cutoff. Complete a controlled low-speed test in a safe area before normal riding.
4-Piston Hydraulic Brake FAQ
Find answers about NUTT four-piston hydraulic brake performance, power cutoff safety and installation fitment.
What are the advantages of a four-piston hydraulic brake?
A four-piston caliper distributes hydraulic clamping force across a larger pad area than a typical two-piston design. This can provide stronger braking, smoother modulation and more consistent control during high-speed, heavy-load or downhill riding.
Actual braking performance also depends on the rotor, pad condition, wheel installation and correct caliper alignment.
Is this four-piston brake compatible with my electric scooter or e-bike?
Compatibility depends on more than the vehicle name. Before ordering, confirm the front or rear position, rotor side, mounting-hole spacing, rotor diameter and thickness, caliper offset, hose route and brake-lever connector.
Different production versions of the same scooter or e-bike may use different mounting or wiring configurations. If you are unsure, send fitment photos before ordering.
Does the brake include an integrated motor power-cutoff function?
The applicable NUTT power-cutoff configuration includes a built-in brake-lever sensor that interrupts motor output when the lever is pulled.
Connector shape and pin configuration must match your vehicle. Do not force an incompatible plug or modify the wiring without confirming the correct adapter and polarity.
Does the four-piston brake arrive pre-filled and ready to install?
The listed configuration is supplied as a pre-filled hydraulic brake system for direct installation when the hose route remains unchanged.
Before riding, check the lever feel, hose fittings, caliper alignment, rotor rubbing and all mounting bolts. If the hose is opened, shortened or routed internally, bleeding may be required after installation.
What hydraulic fluid should be used for maintenance?
Use the fluid specified for the final NUTT SKU. For the mineral-oil configuration, use mineral oil only.
Do not mix mineral oil with DOT brake fluid. Using the wrong fluid can damage seals, cause leakage and affect braking performance. If you are not experienced with hydraulic brake service, use a qualified technician.
Can I use my existing brake rotor and what should I check?
Do not assume that the original rotor is compatible. Confirm the rotor's diameter, thickness, bolt pattern, braking surface, offset and condition against the selected four-piston caliper.
The rotor must run centrally through the caliper without rubbing. If the rotor is warped, excessively worn or outside the approved thickness range, replace it before installation.
What is included in the package?
Package contents vary by the selected option, such as front brake, rear brake or a complete set. The applicable package may include:
- NUTT four-piston hydraulic caliper;
- matching brake lever with power-cutoff sensor;
- hydraulic hose for the selected position and length;
- installed or supplied brake pads;
- mounting hardware required by the selected SKU.
Always compare the package list with the final variant selected on the product page before ordering.
What should I check after installation?
Confirm that the caliper is centered over the rotor, the rotor does not rub, the hose is not kinked or pinched, and all bolts are tightened correctly.
Test the brake lever and motor power cutoff while the wheel is lifted. Then complete a low-speed brake test in a safe area before normal riding. Stop using the vehicle immediately if the lever feels spongy, the system leaks or the motor cutoff does not work.
What photos should I send if I am unsure about fitment?
Please send clear photos showing:
- Front wheel: rotor side, fork structure and caliper mount;
- Rear wheel: rotor side, swingarm structure and caliper direction;
- Brake lever connector: the complete power-cutoff plug and cable;
- Existing brake: caliper, hose route and lever connection.
Still unsure about fitment?
Send your vehicle model, brake position and clear fitment photos to
nuttbraking@outlook.com
before ordering. Please include the selected caliper version, hose length and connector details if available.