The Roadster Cup wouldn’t be possible without our wonderful sponsors, so be sure to check them out and show your support!

For sponsorship inquiries, please contact Brandon Morris.

Extreme Speed Track Events

In each class 1st place is awarded a free track day, 2nd place a $50 track day credit, and 3rd place a $25 track day credit.

Be sure to like Extreme Speed on Facebook and follow them on Instagram.


StopTech will host informational sessions at each of our remaining events. Topics and more information will be announced prior to the event. In addition to the informational sessions, each overall class winner will receive a set of front and rear rotors. Roadster Cup drivers, along with their friends and family, will also receive very special pricing for all products. For more information regarding the special pricing, please fill out our contact form below and one of us will get in touch with you. StopTech swag will also be raffled off at upcoming events.

StopTech Pricing Request Form

StopTech is the high performance and racing brand from Centric Parts – a leading innovator of world class brake components and systems for production-based race cars and high performance vehicles on the street and track. StopTech was the first to offer balanced brake upgrades for production cars and remains the worldwide leader with over 700 platform offerings that dramatically improve overall braking performance.

StopTech was founded in 1999 with the singular mission of becoming the leading aftermarket manufacturer and supplier of high performance brake components and systems. The company founders sought to challenge the status quo in known brake technology, and set new paradigms for brake system upgrades. United by their passion for racing and high performance vehicles, the company quickly earned a reputation for quality and performance both on and off the track.

StopTech’s industry-leading technologies and materials – from rock solid calipers to ingeniously efficient heat handling rotors – have earned the company four patents and numerous industry honors over the years. In 2013, StopTech earned full ISO/TS 16949:2009 Quality Management System certification for the design and manufacture of automotive brake systems and components, allowing the company to supply OEM vehicle assembly plants directly in a Tier 1 relationship.

StopTech has been awarded the highly coveted TÜV approval on several big brake kits. StopTech kits successfully passed TÜV’s demanding series of tests that range from performance and durability, to proper fitment and ease of installation. Although TÜV certification is not required in all countries, TÜV approval demonstrates that StopTech’s Balanced Brake Upgrades meet the rigorous standards set by this respected German agency. StopTech Big Brake Kits have been awarded a Teilgutachten. The complete kit is certified to run on a particular application, so customers do not need to pay for further testing with the TÜV agency.

Visit StopTech’s website for more information and be sure to Like them on Facebook and follow them on Instagram.


In each class, 1st place is awarded a $25 credit, 2nd place a $15 credit, and 3rd place a $5 credit.

Our primary goal is to help Mazda owners like you dial up the FUN. We seek to accomplish that goal by offering a wide range of quality parts and good advice with which you can add some extra fun to your Mazda.

We race what we sell….and evaluate our parts for effectiveness in street use, autocross and track events. We live in sunny San Diego, and while we spend lots of our free time out on the track, you might also find us designing new products, driving local fun roads with the top down, on road trips in one of our project cars, or enjoying the surf. We’ve been in business since the late 90’s so we can answer many of your Mazda questions.

Be sure to Like Good-Win-Racing on Facebook and follow on Instagram.


Two Koyorad radiators and swag will be raffled off this season. Koyo also helped fund the end of the year banquet.

Koyo is a Japanese company established July of 1956 as Ejiri Radiator in Nagoya, Japan (Aichi Prefecture) as a radiator repair shop.  Twelve years later in 1968, Ejiri Radiator established a radiator and oil cooler factory in Nagoya.  We then separated our production facilities from our repair facilities and began manufacturing radiators.  Two years later in 1970, Ejiri Radiator was renamed to Koyo Radiator Manufacturing and began expanding to branches all over Japan.  Koyorad quickly developed into an industry leading Aftermarket Radiator Supplier worldwide.

In Japan we have more than 20 engineers backed with over 54 years of experience.  This ensures that our customers receive products of the best quality, performance, and fit. We at Koyorad strive continuously to find ways to improve and implement new technologies in our Radiators and Condensers.

Koyo uses only Japanese made equipment and sources only the finest Aluminum when producing our products. The combination of skilled engineers, quality materials and precision manufacturing is what has earned Koyorad its reputation for performance and reliability.

Before any new model is introduced to the market, we test extensively for fit, finish, and performance.  From installation to road testing, when you purchase a Koyorad Racing Radiator, you are getting a superior quality product that is built to last.

With decades of hand crafting experience, it is hard to beat our quality for precision and uniformity which is recognized by our customers worldwide.

Be sure to Like Koyorad on Facebook and follow on Instagram.