Wording removed by a change is shown struck through, as in the original. 0 changes, 70 other letters.
None on record.
#40192 from Spec Mazda (SM/SMX · Recommended to the Board · Minutes (2026-06 Fastrack)
Effective 6/1/2026, GCR Section 9.1.7.1.15.b, change as follows:
"Aftermarket (any) wheel studs and lug nuts are permitted., provided that a minimum of two (2) threads protrude beyond thelug nut when the wheel is installed with a minimum of two (2) full threads showing. Wheel studs may not be gun drilled."
#40001 from Spec Mazda (SM/SMX · Recommended to the Board · Minutes (2026-05 Fastrack)
Effective 5/1/26, in GCR, Section 9.1.7.1.D.20., change as follows:
"20. Data Acquisition
1 A technical evaluation process for cars is available. Part of this process for any car that attempts to start an official timed
session is the required download and submission of AiM Data files after each official timed session (All Qualifying 1 &
2, and Races 1 & 2). Within 60 minutes of each timed session end, all Series Competitors MUST send the AiM Data file (.XRK or
.XRZ) for all timed laps of that session to the secure email address (data@specmx-5.com), where data will be reviewed
by an AiM representative directly. Failure to adhere to this guideline, or having a non-functioning AIM data system, may be
grounds for penalty or disqualification.
Competitor data submissions are not protestable by competitors or entrants. Actions related to data submission and compliance
will be determined by race officials only.
a. Vehicle must be equipped with current generation AiM data acquisition system (configurable in Race Studio 3) that can
provide on track data to AiM Rr ace Ss tudio 3. The data acquisition system is required to record the OBDII/ECU data stream. The
data acquisition system may read the Flagtronics system, but it is not permitted to alter/manipulate data from the OBDII/ECU or
Flagtronics system in any way. The AiM system may be utilized to trigger a switch I.E., cooling fans or diff cooler pumps but must
be wired via a separate analog circuit.
Refer to Section 17: Electrical Equipment above for installation requirements.
b. The connection at the OBDII port for the AiM system may be made in either one of two ways:
1. Through a dedicated OBDII AiM adaptor.
2. By direct wiring to the back of the OBDII port within 3” of the ODBII connector.
c. Fuel pressure datalogging is required.
d. Oil pressure datalogging is required.
e. All cars must run the latest AIM Data Logger Spec MX-5 ECU Protocol. most current Mazda-Spec_MX5_NCecu protocol. It must
used in the AIM data systems configuration with no edits or changes and all 21 channels enabled."
#39588 from Marc Cefalo · Not recommended · Minutes (2026-02 Fastrack)
SMAC does not recommend this change at this time. SMAC believes that keeping all competitors on the same (not similar)
equipment is the best path moving forward for overall success and growth of the class. Penske does offer a path to take the T4
non-adjustable shock and convert it to a sealed SMX adjustable shock for those wishing to convert.
#39091 from Spec Mazda (SM/SMX · Recommended to the Board · Minutes (2026-01 Fastrack)
In GCR, Section 8.1.7.1.D.16, change as follows:
"SMX cars are limited to one set of Toyo RR P235/40/ZR17 per Hoosier Super Tour event & Runoffs weekends for all dry
qualifying and race sessions. This limitation does not include testing or practice sessions. Approved rain tires will not be required
to be marked."
#39007 from Spec Mazda (SM/SMX · Recommended to the Board · Minutes (2025-12 Fastrack)
Based on the results of the 2025 SMX Tire RFP, please approve the following language in SMX section 9.1.7.1.d.16.:
"a. Dry tires: Hoosier SMX P225/40/17 Toyo RR P235/40/ZR17.
b. Wet tires: Hoosier SMXW P215/40/17 Toyo RA1 P235/40/ZR17.
c. SMX TIRE MARKING:
1. Effective 1/1/26 SMX cars are limited to one set of Hoosier SMX P225/40/17 Toyo RR P235/40/ZR17 per Hoosier Super Tour
event weekend for all dry qualifying and race sessions. This limitation does not include testing or practice sessions. Approved
rain tires will not be required to be marked.
2. A mandatory impound for all SMX competitors will occur after the first dry qualifying or race session. All tires will be marked
for the remainder of the race weekend. It is the competitor’s responsibility to report to impound and ensure their tires are
marked prior to leaving impound.
3. If a competitor damages a tire or wheel and there is a safety concern, the competitor must-find the Hoosier Super Tour Series
Tech Chief or SMX CCC, if assigned, for inspection. At the discretion of the Hoosier Super Tour Series Tech Chief of SMX CCC the
competitor may be allowed to substitute alternate used tires(s) to replace the damaged tire(s). New tires are not an option as a
replacement tire for a damaged tire.
Outgoing spec dry tire Toyo RR P235/40/17 and wet tire Toyo RA1 P235/40/17 may be continued to be used at conference
Majors and Regionals until 4/30/26."
#38743 from Ryan Gutile · Not recommended · Minutes (2025-11 Fastrack)
Thank you for your letter. See response to letter 38386 in current Fastrack.
#38386 from Ryan Gutile · Not recommended · Minutes (2025-11 Fastrack)
Thank you for your letter. At this time SMAC does not recommend this change. There is testing being conducted to see if an NB
reservoir can be fitted to an NC. Until this testing is completed and the concept is proven, we are going to not recommend the
change at this time.
#38903 from Stephen K Jones · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38878 from Aaron Cole · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38877 from Kevin Duchak · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38876 from Greg Andrews · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38875 from Tim Ferrick · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38874 from Bryan Lampe · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38869 from Dave Hicks · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38868 from Christopher Haldeman · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38867 from Fred McConnell · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38866 from RICHARD BARATTA · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38865 from Stephanie Andersen · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38864 from Daniel Goff · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38857 from Andy Hill · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38855 from Moss Caballero · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38854 from David Pintaric · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38850 from Jason Fichter · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38849 from Benjamin Merwin · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38848 from Jarrett Jones · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38832 from Cam Ebben · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38823 from Cliff Ebben · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38769 from James Ebben · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38741 from Ryan Gutile · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38739 from Ethan Barker · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38726 from Todd Miller · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38686 from Ken Sutherland · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38661 from Ben Jacobs · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38605 from Alex Phelps · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38595 from Kristine Craine · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38577 from Jason Rawlins · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38574 from Steven Phillips · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38573 from Jon Davies · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38572 from Will Schrader · No action required · Minutes (2025-10 Fastrack)
Thank you for your detailed response. Please see letter #38969 in September 2025 Fastrack.
#38969 from Spec Mazda (SM/SMX · Recommended to the Board · Minutes (2025-09 Fastrack)
In GCR section 9.1.7.1.6.1 add as follows:“Effective 1/1/27 all engines for Hoosier Super Tour/Runoffs and all Major events
starting in 2028 must be the Roush Performance turn key sealed engine part # 0000-01-5015-KT. NO MODIFICATIONS OR
ADJUSTMENTS ARE ALLOWED These engines are purchased through Mazda Motorsports by calling 800-435-2508 or
visiting www.mazdamotorsports.com.
1. All seals on the engine shall remain in place and unmodified at all times. In the event an engine needs to be rebuilt, all engines
shall be rebuilt, checked on an engine dynamometer, and sealed through Mazda Motorsports/Roush Performance.
2. Engine maintenance is permitted, and includes the replacement, but not modification of external engine and engine systems
parts.
3. There are five (5) seals on the engine. Two (2) on the valve cover, two (2) on the front timing chain cover, and one (1) on the
oil pan. They may not be removed or tampered with.”
#38524 from Spec Mazda (SM/SMX · Member feedback requested · Minutes (2025-07 Fastrack)
SMX Racers,
The Spec MX-5 (SMX) class was founded in 2019 on four key pillars: Reliability, Techability, Affordability, and Fun to Drive. Now
in its second year as an SCCA national class, SMX continues to thrive.
However, we have observed increasing engine development that begins to drift from these core pillars. To address this, SMX is
evaluating the possibility of transitioning to Roush as a single-source engine provider, beginning with the 2027 Hoosier Super
Tour season.
Continued development and innovation can unintentionally add cost, reduce reliability, and create performance disparities
among competitors. These factors can compromise the long-term health of the class. Moving to a single-source engine supplier
helps ensure parity while staying true to the founding principles of Spec MX-5.
Under the proposed Roush single-source model, all engines would be run-in on an SAE-certified dyno cell with break-in oil, and
additional power pulls would be conducted to verify output and ensure class compliance. Roush currently maintains an SAE-
certified dyno tolerance of approximately 1.5%, which keeps the field as competitive as possible while managing costs. A 2-3
year price freeze and some version of an exchange/rebuild program would also be part of this plan.
We value your input on this important decision. Please share your comments and connection to SMX (Driver, Crew, build in
progress, etc).
Thank you for your continued support of the Spec MX-5 class.
#38249 from Greg Amy · Not recommended · Minutes (2025-06 Fastrack)
Thank you for your letter. Your concerns have been addressed in other existing letters.
#38241 from Paul Gauzens · Not recommended · Minutes (2025-06 Fastrack)
Thank you for your letter. SMAC, AIM and the SCCA technical staff are working on a better long-term technology solution to the
data submission requirement for SMX.
Submitting data to AIM/SCCA has significant advantages to the competitors and was one of the key founding principles of the
class. While in some rare circumstances it can be challenging to submit your data on time the alternative is more invasive
mechanical technical inspections that will take more effort and time than uploading a data file.
This data has also been extremely helpful for AIM to proactively communicate with competitors on vehicle health and
performance issues they may not have known about.
Technical compliance through data is something imperative to the future success of the class. The most recent rule change
effective 6/1/25 calls for data to be submitted within 60 minutes from checkered flag time which we believe is reasonable while
we sort out some new technology that will either allow the competitor to download and submit data from an app, or SCCA
actively pulls the data for the competitor wirelessly in impound.
#38136 from Paul Gauzens · Not recommended · Minutes (2025-06 Fastrack)
Thank you for your letter. SMAC, AIM and the SCCA technical staff are working on a better long-term technology solution to the
data submission requirement for SMX.
Submitting data to AIM/SCCA has significant advantages to the competitors and was one of the key founding principles of the
class. While in some rare circumstances it can be challenging to submit your data on time the alternative is more invasive
mechanical technical inspections that will take more effort and time than uploading a data file.
This data has also been extremely helpful for AIM to proactively communicate with competitors on vehicle health and
performance issues they may not have known about.
Technical compliance through data is something imperative to the future success of the class. The most recent rule change
effective 6/1/25 calls for data to be submitted within 60 minutes from checkered flag time which we believe is reasonable while
we sort out some new technology that will either allow the competitor to download and submit data from an app, or SCCA
actively pulls the data for the competitor wirelessly in impound.
#38104 from Benjamin Merwin · Not recommended · Minutes (2025-06 Fastrack)
Thank you for your letter. SMAC, AIM and the SCCA technical staff are working on a better long-term technology solution to the
data submission requirement for SMX.
Submitting data to AIM/SCCA has significant advantages to the competitors and was one of the key founding principles of the
class. While in some rare circumstances it can be challenging to submit your data on time the alternative is more invasive
mechanical technical inspections that will take more effort and time than uploading a data file.
This data has also been extremely helpful for AIM to proactively communicate with competitors on vehicle health and
performance issues they may not have known about.
Technical compliance through data is something imperative to the future success of the class. The most recent rule change
effective 6/1/25 calls for data to be submitted within 60 minutes from checkered flag time which we believe is reasonable while
we sort out some new technology that will either allow the competitor to download and submit data from an app, or SCCA
actively pulls the data for the competitor wirelessly in impound.
#38051 from Jim Ebben · No action required · Minutes (2025-05 Fastrack)
Thank you for your letter. Please see response to letter #38039. A key part of this series is the immediate virtual tech checks
that occur based on the competitor’s data submissions. All HST events require a 30-minute mandatory impound all during which
the data can be downloaded and submitted. There is contracted AIM staff sitting by to run automated technical compliance
checks in a very short period of time once all of the competitors data files have been submitted. Moving the data submission
timeframe outside of the 30 or 40 minute window would then require more invasive mechanical tech during impounds which is
far more invasive and troublesome than finding a way to get a laptop to impound. The series is working with AIM to test the
ability to pull the competitors data automatically in impound for the competitor for future implementation.
#37985 from Ryan Gutile · No action required · Minutes (2025-05 Fastrack)
Thank you for your letter. The rule is adequate as written. SMAC does not make compliance determinations, that is reserved for
the tech staff. To be clear every race is a new event, and cars are not deemed compliant because of past events. Saying the car
was deemed legal by the Spec MX-5 Challenge series has zero bearing on the current SCCA rule book.
#37567 from Spec Mazda (SM/SMX · Recommended to the Board · Minutes (2025-02 Fastrack)
In GCR, Section 9.1.7.1.D.1, change as follows:
"(Effective Date 3/1/25) The minimum vehicle weight with driver is 2,500lb for standard bore engines and 2,525.0 lb for allowed
overbore engines."
#37504 from SCCA Staff · Recommended to the Board · Minutes (2025-01 Fastrack)
In GCR section 9.1.7.1.D.16, add as follows:
"c. SMX TIRE MARKING: a. Cars in SMX are limited to running 1 (one) new (sticker) set, used tires or any of those combinations, of
class specified Toyo tires (Toyo RR P235/40/ZR17) per regular season Hoosier Super Tour event weekend during qualifying and
races (not including any test day sessions). Before the first dry qualifying or race (if rain in qualifying) session competitors will
supply four Toyo RR P235/40/ZR17 tires for marking to use during the entire weekend. Class specified rain tires will not be
marked. b. A mandatory impound for all SMX competitors is required after the first dry qualifying or race (if rain in qualifying)
session. It is the competitor’s responsibility to ensure their tires are marked prior to going on track for the next session. c. If a
competitor damages a tire or wheel, and there is a safety concern, the competitor must find the Hoosier Super Tour Series Tech
Chief or SMX CCC, if assigned, for inspection. At the direction of the Hoosier Super Tour Series Tech Chief or SMX CCC, the
competitor will be allowed to substitute alternate used tire(s) to replace the damaged tire(s). New tires are not an option as a
replacement tire for a damaged tire."
#37154 from Spec Mazda (SM/SMX · Recommended to the Board · Minutes (2024-12 Fastrack)
In GCR, Section 9.1.7.1.D.20.1 , changes as follows:
"A technical evaluation process for cars is available from the Series. Part of this process is the required download of AiM Data
files after each timed session (Qualifying 1 & 2, Races 1 & 2). Within 30 minutes of each timed session end, all Series
Competitors MUST send the AiM Data file (.XRK) for all timed laps of that session to the secure email address (data@specmx-
5.com), where data will be reviewed by AiM directly. Failure to adhere to this guideline from the Series, or having non-
functioning data, may be grounds for penalty or disqualification. by the Series."
#37103 from Marc Cefalo · Not recommended · Minutes (2024-12 Fastrack)
Thank you for your letter. At this time SMAC does not feel this change is necessary as broken/damaged components are
covered in the GCR with language that states "It is permitted to use industry stnadard procedures to reapir damaged
components"
#36984 from Ryan Gutile · Not recommended · Minutes (2024-11 Fastrack)
Thank you for your letter. We anticipate a tire test during the 2025 season for implementation in 2026 for SMX. Open tires in
SMX is not nor will be an option for a spec class.
#36933 from Todd Miller · No action required · Minutes (2024-11 Fastrack)
Thank you for your letter. SMAC agrees with staying on the Toyo for 2025 is the right decision.
#36916 from Jarrett Jones · No action required · Minutes (2024-11 Fastrack)
Thank you for your letter. SMAC agrees with staying on the Toyo for 2025 is the right decision.
#36887 from Will Schrader · No action required · Minutes (2024-11 Fastrack)
Thank you for your letter. SMAC agrees with staying on the Toyo for 2025 is the right decision.
#36862 from Chris Smith · No action required · Minutes (2024-11 Fastrack)
Thank you for your letter. SMAC agrees with staying on the Toyo for 2025 is the right decision.
#36861 from Stephen K Jones · No action required · Minutes (2024-11 Fastrack)
Thank you for your letter. SMAC agrees with staying on the Toyo for 2025 is the right decision.
#36860 from Kirk Haag · No action required · Minutes (2024-11 Fastrack)
Thank you for your letter. SMAC agrees with staying on the Toyo for 2025 is the right decision.
#36859 from Cooper Hicks · No action required · Minutes (2024-11 Fastrack)
Thank you for your letter. SMAC agrees with staying on the Toyo for 2025 is the right decision.
#36847 from Benjamin Merwin · No action required · Minutes (2024-11 Fastrack)
Thank you for your letter. SMAC agrees with staying on the Toyo for 2025 is the right decision.
#36682 from Joe Rainey · Not recommended · Minutes (2024-10 Fastrack)
Thank you for your letter. Per section 9.1.7.1.3.j removal of excess wiring is allowed. Mazda is also working on a race harness
for the SMX class but is not currently available. Opening up the class to create custom wiring harnesses is not within class
philosophy and would create difficulties for the tech staff and opportunities for noncompliance. There are currently used
harnesses available on the open market that would solve this problem while the race harness continues through the
development process.
#36605 from Marc Cefalo · Not recommended · Minutes (2024-10 Fastrack)
Thank you for your letter. This change is not needed at this time as the OEM clutch disc is a full face design with softer
engagement. The kit referenced in your letter uses a different pressure plate than what is legal and included in the bespoke
Mazda ACT clutch kit allowed in SMX.
#36036 from Josh Smith · No action required · Minutes (2024-05 Fastrack)
SMAC support this opportunity to be a test group for the full implementation later this season for all
classes for the Runoffs. SMX has a nigh adoption rate of Flagtronics already and the group as a whole is
supportive of the technology.
#36033 from Greg Amy · No action required · Minutes (2024-05 Fastrack)
SMAC support this opportunity to be a test group for the full implementation later this season for all
classes for the Runoffs. SMX has a nigh adoption rate of Flagtronics already and the group as a whole is
supportive of the technology.
#35718 from Joseph Ebben · Not recommended · Minutes (2024-05 Fastrack)
Thank you for your letter. Please see response to letter 35677 in March Fastrack.
#35689 from Cliff Ebben · Not recommended · Minutes (2024-05 Fastrack)
Thank you for your letter. Please see response to letter 35677 in March Fastrack.
#35684 from Spec Mazda (SM/SMX · Recommended to the Board · Minutes (2024-03 Fastrack)
In GCR Section 9.1.7.1.D.20.1., change as follows:
"A technical evaluation process for cars is available from the Series. Part of this process is the required download of AiM Data
files after each timed session (Qualifying 1 & 2, Races 1 & 2). Within 30 minutes of each timed session end, all Series
Competitors MUST send the AiM Data file (.XRK) for all timed laps of that session to the secure email address (data@specmx-
5.com), where data will be reviewed by AiM directly. Failure to adhere to this guideline from the Series, or having non-
functioning data, may be grounds for penalty or disqualification by the Series. Competitor data submissions are not protestable
by competitors or entrants. Actions related to data submission and compliance will be determined by race officials only."
#35678 from Campbell Ebben · Taken care of · Minutes (2024-03 Fastrack)
Thank you for your letter. See response to letter #35677 in current Fastrack.
#35677 from James Ebben · Not recommended · Minutes (2024-03 Fastrack)
Thank you for your letter. GCR section 9.3 specifies which classes require fire systems versus fire bottles. A change in fire system
requirements would need to be submitted through the letter system, reviewed and recommended by the GCR Advisory
Committee, voted on by the CRB, and ultimately sent to the BoD for approval. The recent change to the SMX section of the GCR
was made so that it does not conflict with the general fire system language in Section 9.3.
#35381 from Spec Mazda (SM/SMX · Recommended to the Board · Minutes (2024-01 Fastrack)
In GCR Section 9.1.7.1.D.19.c, Make change as follows:
c. Installation of a fire extinguisher or fire system is required.