MM News

MM Coronavirus Update

We’re changing our phone hours to 9:00 AM to 3:00 PM Pacific Time (Monday-Friday, excluding holidays) so we have more time to process orders and get them out to you.

Please be aware
Our supply chain is suffering major pandemic-related disruptions. Many of our suppliers shut down for a time, and like us are operating with reduced manpower. Meanwhile, demand for MM products has skyrocketed. Thank you! We’re a small company and we regret our website isn’t fancy enough to inform you of back orders when you buy something. Please understand that we’re working as fast as we can to fill your orders.

UPS Shipping Times As of March 24, UPS no longer guarantees the shipping time for any shipment. i.e., expect shipping time to lengthen.

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Brake Master Cylinder Recommendation Request

  • As a service to our customers purchasing master cylinders, installation kits, or other items related to master cylinders directly from Maximum Motorsports, we'll make a recommendation on which master cylinder to use for your particular Mustang and its brake system.
  • Required: You must purchase MM Tech Services before submitting this form.
  • Not buying direct from MM? Please contact your vendor for tech support.
  • Please answer all questions. The more accurate and complete your answers, the faster we can give you a response.
  • Failure to answer all of the questions will prevent us from being able to recommend the optimum master cylinder for your Mustang and your driving situation.
  • A response may take up to 5 days; the MM Engineering Team works during regular business hours, M-F.

Follow these instructions:

  1. Please copy and paste everything below into the email "Message" field on the Contact Us page.
  2. Type in your answers after each individual question.
  3. For those questions regarding items you would like us to make a recommendation for, answer with "Please recommend."
  4. Select "Tech Department" and then click "Send."

Got a smart phone?

  • Your phone may not let you complete this simple task.
  • You may need to copy and paste into a document first.
  • You may need to use a desktop computer.

Copy and paste everything below the line.


You must purchase MM Tech Services to get the required MM Web Order Number (MM website purchase) or MM Invoice Number (purchase by phone) before submitting this BMCRR form. Forms submitted without an order number or invoice number will be ignored.

Questions about 1979-2004 Mustangs:
1) What is your Web Order Number or Invoice Number?
2) What year is your car?
3) What model is your car? (Mustang, T-Bird, etc.)
4) What submodel is your car? (GT, GTS, LX, Cobra, etc.)
5) What year, model, and submodel did the front brake rotor come from?
6) What year, model, and submodel did the front brake caliper come from?
7) What year, model, and submodel did the rear brake rotor come from?
8) What year, model, and submodel did the rear brake caliper come from?
9) Is the proportioning valve stock or aftermarket?
10) If stock, what year, model, and submodel did it come from, and what is the part number stamped on its side?
11) If aftermarket, what is the manufacturer brand?
12) Is the brake system power assisted or manual?
13) If power, what year, model, and submodel did the vacuum booster or hydroboost come from?
14) If manual, what is the manufacturer and model number of the conversion kit?
15) What brand and compound are the front brake pads?
16) What brand and compound are the rear brake pads?
17) What is the brand and model of the front tires?
18) What is the front tire width?
19) What is the front wheel width?
20) What is the brand and model of the rear tires?
21) What is the rear tire width?
22) What is the rear wheel width?
23) Do you plan to make any changes in the near future, such as changing tire sizes, adding specific performance parts, etc.?

Tell us about how you drive your car.
It's very important that we understand how you use your car and what type of performance you want from it.

a) Is it only street driven?
b) Drag strip use only? (trailered to the strip)
c) Road course use only? (trailered to the track)
d) Street/strip? (Street-driven and also on the strip)
e) Street and autocross/road course?
f) Is there anything else you think we should know?
g) What is your name?
h) What is your email address?