Research E&O Mazda MX5
#27112 from Josh Smith · Rule change · TB 19-09 (2019-09 Fastrack)
In T4, Mazda MX-5 / Club Model (06-15), make changes to the notes as follows:
"The following items must remain stock OEM unmodified, unless alternate part numbers are permitted
below: original wheels (06-15 factory wheels are allowed), and transmission, differential, and LSD.
Factory bolt-in roll bar/cross member may be removed to facilitate roll cage installation. MSR option
permitted. Suspension package permitted with a 100 lbs. weight increase that includes the following
parts: front spring mount PT#-0000-04-5259, front springs #0000-04-9700-08, rear spring mount PT#-
0000-04-5258, rear springs #0000-04-9400-07, helper springs #0000-04-HLPR-EB (optional),front sway
bar kit PT#0000-04-5306-FT, rear sway bar kit PT#-0000-04-5306-RR F/R sway bar kit #GRM5-
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8MD16, front end links #0000-04-5499, rear end links #0000-04-5498., offset front camber bushing PT#-
0000-04-5407-NC. Mazda Motorsports cold air intake part #0000-06-5150-KT allowed. Mazda
Motorsport RX8 rear Hub Conversion kit part number 0000-04-5811-KT allowed, RX8 front hubs PT#
F189-33-04X allowed. The SM5 suspension (only) is allowed with a 100 lbs. weight increase. Non-OEM
limited slip differential allowed with +50 lbs. weight penalty. Allow Mazda header part number 0000-06-
5407. Any OEM or aftermarket hardtop is permitted that retains the OEM roof silhouette, including
Mazda hardtop part # 0000-07-5902-ND 0000-07-5901-CC (discontinued DG Motorsports)."