44mm 6-Bolt Disc Brake Rotor Spacer
A lightweight aluminum alloy brake rotor spacer designed for compatible e-bike and electric scooter disc brake systems. Available in 4mm and 5mm thicknesses with a 44mm BCD 6-bolt mounting pattern and six M5 × 16mm mounting bolts included.
Built for Precise Brake Rotor Spacing
This disc brake rotor spacer is installed between the wheel hub and brake rotor to provide additional spacing where required. It is suitable for compatible electric bicycle and electric scooter brake rotor setups.
Designed for compatible 6-bolt brake rotor and hub mounting systems using a 44mm bolt circle diameter.
Select the appropriate spacer thickness according to the rotor offset required by your wheel and brake setup.
Lightweight aluminum alloy construction provides a practical balance of durability, low weight and everyday usability.
Six evenly positioned mounting holes are designed for compatible 6-bolt disc brake rotor systems.
Each spacer is supplied with six M5 × 16mm mounting bolts, so the necessary fasteners are included in the package.
Designed for compatible e-bike and electric scooter wheel hubs and disc brake rotor configurations.
Specifications
Please compare the measurements below with your existing rotor and wheel hub before ordering.
| Product Type | Disc Brake Rotor Spacer |
|---|---|
| Application | E-Bike / Electric Scooter |
| Material | Aluminum Alloy |
| Color | Black |
| Mounting Pattern | 6-Bolt |
| BCD | 44mm |
| Outer Diameter | Approx. 55mm |
| Mounting Hole Diameter | Approx. 5.5mm |
| Available Thickness | 4mm / 5mm |
| 4mm Spacer Weight | Approx. 16g |
| 5mm Spacer Weight | Approx. 20g |
| Included Bolt Size | M5 × 16mm |
| Included Bolts | 6 Pieces |
How Does a Brake Rotor Spacer Work?
A rotor spacer changes the position of the brake disc relative to the wheel hub. It can be useful when additional rotor offset is required after changing wheels, hubs, rotors or other compatible brake components.
The spacer sits between the wheel hub and brake rotor, adding approximately 4mm or 5mm of spacing depending on the selected version.
The additional spacing can help position the brake rotor correctly for a compatible caliper, wheel and hub configuration.
Check Compatibility Before Ordering
This is not a universal-fit spacer. Please check your rotor and wheel hub measurements carefully before purchasing.
What's Included
Each package contains one rotor spacer and the corresponding mounting bolts.
Frequently Asked Questions
What is this disc brake rotor spacer used for?
It is installed between a compatible wheel hub and disc brake rotor to add spacing and adjust the rotor position relative to the brake caliper.
What is the bolt circle diameter?
The spacer uses a 44mm BCD with a 6-bolt mounting pattern.
What is the difference between the 4mm and 5mm versions?
The difference is spacer thickness. The 4mm version adds approximately 4mm of spacing, while the 5mm version adds approximately 5mm. Select the thickness required by your specific wheel, rotor and brake setup.
What size bolts are included?
Six M5 × 16mm mounting bolts are included with each rotor spacer.
Does this spacer fit all e-bikes and electric scooters?
No. Compatibility depends on the wheel hub and brake rotor mounting dimensions. Please verify the 44mm BCD, 6-bolt pattern, mounting hole dimensions and required 4mm or 5mm spacing before ordering.
Are mounting bolts included?
Yes. Each package includes one rotor spacer and six M5 × 16mm mounting bolts.