Description
Part Number: AF300-151BLK
Aeroflow GM Brake Master Cylinder 1-1/8″ Bore – Black Finish
Engineered for street rods, muscle cars, and custom motorsport builds, the Aeroflow Performance slimline brake master cylinder delivers exceptional hydraulic pressure and dependable stopping power.
Key Features
- ☑ Precision 1-1/8″ (28.57mm) bore diameter suited for 4-wheel disc or disc/drum brake setups
- ☑ Lightweight cast aluminium body finished in a sleek, durable black coating
- ☑ Smooth top lid design for a clean, custom engine bay aesthetic
- ☑ Standard GM 3-3/8″ (85.7mm) mounting bolt pattern for simple direct-fit or retro-fit installation
- ☑ Dual side porting with 1/2″-20 back ports and 9/16″-18 front ports (inverted flare)
- ☑ Versatile shallow pocket design compatible with manual or power-assisted brake systems
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Aeroflow Performance |
| Part Number | AF300-151BLK |
| Bore Size | 1-1/8″ (28.57mm) |
| Material | Cast Aluminium |
| Finish | Black Finish |
| Lid Style | Smooth Top Lid |
| Mounting Spacing | 3-3/8″ (85.7mm) GM Universal Pattern |
| Rear Port Threads | 2 x 1/2″-20 Inverted Flare |
| Front Port Threads | 2 x 9/16″-18 Inverted Flare |
| Reservoir Type | Dual Reservoir Slimline |
What’s Included in the Box
- 1 x Aeroflow GM Brake Master Cylinder 1-1/8″ Bore (Black Finish)
- 1 x Smooth Top Aluminium Lid with Seal and Retaining Clip
- 1 x 1/2″-20 Inverted Flare Port Plug
- 1 x 9/16″-18 Inverted Flare Port Plug
Aeroflow Performance products are globally recognized for precision engineering and superior durability under high-stress performance driving. Buy your genuine Aeroflow hardware directly from JP Racing for expert technical advice and prompt UK dispatch.







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