You have no items in your shopping cart.
Search
Filters

Restrictor Plate

Restrictor Plates for SCCA and NASA Spec Miata competition.
*
*
$45.00
- +

Mazda Motorsports restrictor plates for SCCA and NASA SpecMiata competition.  Available in 38mm (0000-06-5239-99) and 40mm (0000-06-5240-01) sizes per the rules.

 

From the SCCA GCR page 557 section 9.1.7.J.1.d

"1.8L cars must use an air restrictor plate. The restrictor plate must be placed between the throttle body and plenum. All intake air must pass through the restrictor plate. Restrictor plates must be the proper size as listed in the specification table, must be from Mazdaspeed Motorsports Development or from SCCA Enterprises, and must not be modified. An OE (or equivalent) gasket shall be used on both sides of the restrictor plate."

 

Refer to GCR page 566 for official listing of size of restrictor plate for your year of car.

 

We have listed the legal restrictor plate sizes per model year for your convenience.  It is the competitors responsibility to validate the numbers for their model year car via the GCR.

1999-2000 = 38mm

2001-2005 = 40mm

Price is for Qty (1) restrictor plate.

 

If you wish to add the Restrictor Plate gaskets you can select them from the drop down menu.  The SCCA rule requires (2) gaskets so the drop down price is for qty (2) OEM Mazda gaskets.

 

Mazda Motorsports restrictor plates for SCCA and NASA SpecMiata competition.  Available in 38mm (0000-06-5239-99) and 40mm (0000-06-5240-01) sizes per the rules.

 

From the SCCA GCR page 557 section 9.1.7.J.1.d

"1.8L cars must use an air restrictor plate. The restrictor plate must be placed between the throttle body and plenum. All intake air must pass through the restrictor plate. Restrictor plates must be the proper size as listed in the specification table, must be from Mazdaspeed Motorsports Development or from SCCA Enterprises, and must not be modified. An OE (or equivalent) gasket shall be used on both sides of the restrictor plate."

 

Refer to GCR page 566 for official listing of size of restrictor plate for your year of car.

 

We have listed the legal restrictor plate sizes per model year for your convenience.  It is the competitors responsibility to validate the numbers for their model year car via the GCR.

1999-2000 = 38mm

2001-2005 = 40mm

Price is for Qty (1) restrictor plate.

 

If you wish to add the Restrictor Plate gaskets you can select them from the drop down menu.  The SCCA rule requires (2) gaskets so the drop down price is for qty (2) OEM Mazda gaskets.

 

Write your own review
  • Only registered users can write reviews
  • Bad
  • Excellent
Customers who bought this item also bought
Picture of Roll Bar Padding

Roll Bar Padding

3 foot stick of Black round "Mini" style high density roll bar padding.
$26.50 $25.00
Picture of Transmission Tunnel Notch out Panel

Transmission Tunnel Notch out Panel

Pre-bent/formed notch out panel to help with the installation of a composite seat.
$195.00 $165.00
Picture of Offset Bushing Kit

Offset Bushing Kit

Increase the camber in your SpecMiata the safe and legal way!
$75.00 $60.00