Description
Part Number: AF300-155BLK
Aeroflow GM Brake Master Cylinder 1-1/8″ Bore Cast Iron (Black Finish)
Engineered for heavy-duty braking performance, this Aeroflow cast iron brake master cylinder features a robust 1-1/8″ bore and dual reservoir design for maximum hydraulic pressure and reliability.
Key Features
- ☑ High-durability cast iron construction with a sleek black protective finish
- ☑ 1-1/8″ (28.57mm) bore diameter ideal for high-demand disc/disc and disc/drum brake systems
- ☑ Standard GM 3-3/8″ mounting bolt spacing for easy direct-fit or custom mounting
- ☑ Dual bowl/reservoir design providing isolated hydraulic circuits for enhanced vehicle safety
- ☑ Ported on both sides for versatile brake line plumbing options (includes port plugs)
Technical Specifications
| Brand | AeroFlow Performance |
|---|---|
| Manufacturer Part Number | AF300-155BLK |
| Bore Diameter | 1-1/8″ (28.57mm) |
| Material | Cast Iron |
| Finish | Black Finish |
| Mounting Spacing | 3-3/8″ GM Universal Mount Pattern |
| Port Locations | Dual side ports (Left and Right sides) |
| Rear Ports | 2 x 1/2″-20 Inverted Flare |
| Front Ports | 2 x 9/16″-18 Inverted Flare |
What’s Included in the Box
- 1 x Aeroflow 1-1/8″ Bore Cast Iron Master Cylinder (Black Finish)
- 1 x 1/2″-20 Inverted Flare Port Plug
- 1 x 9/16″-18 Inverted Flare Port Plug
- Dual Reservoir Lids with Retaining Clamps
Aeroflow Performance products are built to demanding motorsport standards, combining exceptional hydraulic reliability with street-ready durability. Order your AF300-155BLK from JP Racing today for expert technical advice, genuine product guarantee, and lightning-fast UK nationwide delivery.







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