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OnBuy.com£19.99Visit shop Rear Foot Brake Disc Calliper & Master Cylinder Pit Dirt Bike 110Cc 125Cc 140Cc Black 5055583005817
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This rear hydraulic brake system by Petrolscooter is designed for riders of 110cc, 125cc, and 140cc pit and dirt bikes who require a reliable, foot-operated stopping solution. The kit provides an all-in-one replacement option including the calliper, master cylinder, and mounting bracket, making it ideal for maintenance or performance upgrades. The primary caveat is that it is strictly intended for specific engine displacements and foot-brake configurations, so users must verify their bike's existing mounting points before installation.
| Model Part Number | 40535 |
|---|---|
| Brand | Petrolscooter |
This kit is specifically designed for 110cc, 125cc, and 140cc models. It may not align correctly with the frame or swingarm of smaller displacement bikes.
No, the kit comes pre-fitted with brake pads, so you are ready to install the system once you have received it.
This unit is strictly designed for foot brake operation.
This product is engineered for pit and dirt bikes. It is not recommended for street-legal scooter applications due to differences in mounting geometry.
The overall calliper height is 157.02 mm.
There is likely air in the hydraulic lines. Perform a thorough brake bleed to ensure all air bubbles are removed from the system.
Check the alignment of the mounting bracket to ensure the calliper is centered over the disc. Verify that the master cylinder piston returns fully when the pedal is released.
Check the brake pads for contamination (oil or grease) or excessive wear. Ensure the disc is clean and free of debris.
To install this kit, ensure your pit bike features a disc brake mounting point on the rear swingarm. Secure the bracket firmly before attaching the hydraulic lines. Because this system arrives as a pre-assembled hydraulic unit, you will need to perform a system bleed after installation to remove trapped air from the lines; failing to do so will result in a 'spongy' pedal feel. To maintain performance, regularly inspect the brake pads for wear and ensure the hydraulic fluid level in the master cylinder reservoir remains within the recommended range. Avoid using corrosive cleaning agents on the black finish to preserve the coating longevity.
