SSBC-USA 9-inch brake booster and master cylinder combo for A129-4 kit, showing the brake booster and master cylinder components.

Booster/Master Brake Cylinder Combo, 9", For A129-4 Kit – A28138

Name: Booster/Master Brake Cylinder Combo, 9", For A129-4 Kit – A28138
Brand: SSBC-USA
SKU: A28138
Price: 272.0 USD
Availability: InStock

SKU- A28138

$272.00

Shipping calculated at checkout.

SSBC-USA A28138 9-inch booster/master cylinder combo for compatible A129-4 kit applications.

SKU: A28138
9-inch brake booster and master cylinder
1-1/8-inch bore master cylinder
Compatible with select power-brake Corvette-style applications where specified

Verify kit, pedal, firewall, pushrod, bore requirements, and brake-system compatibility before ordering.

Manufacturing Information

The brake booster and master-cylinder components in this assembly are sourced by SSBC-USA and are not manufactured in-house at our Elma, New York facility. Contact Customer Service for confirmed country-of-origin information.

✔ Fitment Confidence: Call (716) 775-6700 before ordering if any application detail is uncertain.

🚚 Shipping: This item ships from our Elma, NY facility. Typical processing time is 5–10 business days, subject to product availability and supplier delays.

Frequently Asked Questions

How do I confirm this product fits my vehicle or brake system?

Review the fitment information on this page and confirm your year, make, model, drivetrain, wheel clearance, and current brake configuration where applicable. If you are unsure, call SSBC-USA technical support at (716) 775-6700 before ordering.

What is included with this product?

The included components are listed in the product description above. If a component is not specifically listed or you need help identifying what is required for your application, call SSBC-USA at (716) 775-6700.

How long will this product take to ship?

This item is configured to order at our Elma, New York facility. Production and configuration typically take 5–10 business days, although supply constraints can occasionally cause additional delays. Exact shipping cost is calculated at checkout.

Where can I get technical or order support?

Call SSBC-USA at (716) 775-6700 or email orders@ssbc-usa.com. Please include your product or order number when available.

So far so good. 2020 Cadillac Escalade ESV 6.2L 4WD. I'm still putting the first 100 miles on the new front brakes. Incredibly responsive coupled with stainless steel braided brakelines. Overall install took less than 1 hour with cleaning and torquing all fasteners and flushing and bleeding the front brakes. I will buy the rear brakes next.

Hi Jerome, thank you for sharing your experience! We're glad to hear the brakes are working well and that the installation went smoothly. We appreciate your trust and look forward to serving you again for the rear brakes. Safe driving!

Fit OEM bracket with no adjustment

Fit OEM bracket with no adjustment. Definitely stronger and smoother than the two piston original. Large fluid void in the caliper needs extra time and fluid to bleed but has top and bottom bleed options. I like the look of the new caliper through the wheel

Hi Nathan, thank you for sharing your experience! We're glad you found the caliper smooth and easy to fit, and that you like the look. Enjoy your upgraded braking system!

UPDATED

Everything worked out after modifying the ebrake cable. It's worked out fantastic and wish I had done the conversion sooner!

I'm hoping to edit this review soon. Delivery was pretty good only a day later than expected. Everything seemed to fit fine although the brake lines needed to be modified. The only standing issue right now is the ebrake cable is apparently too short, so it's not ready for the road yet. I'm considering options before road test. Again, I hope to edit this soon and make it a five star across the board.

Hi Gary, thank you for your detailed feedback! We're glad the delivery was timely and that most parts fit well. We appreciate your efforts to resolve the ebrake cable issue and look forward to hearing about your road test. Feel free to update your review when you're ready. Safe driving!

Did a complete manual brake to power assisted disc brakes

Did a complete manual brake to power assisted disc brakes. Was very difficult finding the correct otems to fit a 1971 Duster but Chris and others were great to work with and we finally got everything correct. I appreciate their patience as we worked through rebuilding an old car. The entier team (tech and Chris) were great.

Thanks...

Glenn Schirg

Hi Glenn, thank you so much for your kind words! We're thrilled to hear everything worked out well with your Duster project. It was a pleasure assisting you, and we're here whenever you need us. Happy driving!

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Booster/Master Brake Cylinder Combo, 9", For A129-4 Kit – A28138

Manufacturing Information

Customer Reviews

Frequently Asked Questions

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