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ESR Competition radiators 1999-2005

Originally built and designed by Sam Henry of Springfield Dyno. This is the latest revision to the most effective radiator in the Spec Miata marketplace. There's a reason that so many winners and champions use these radiators, they work better than anything else out there. They have been used on 6 of the last 7 national Championship winning cars.

This is a true triple pass radiator which channels the water from side to side multiple times ensuring a substantially longer cooling time in the radiator and pulling even more heat out of the cooling system. Many try to copy, but none have been nearly as effective.

Three main attributes for this radiator are:

Reduced cooling system operating temperature. We have consistently seen 20-30 degrees cooler temperatures running this new radiator vs a 54mm Koyo radiator or a few of the other copies of our radiator.

Reduced intake system air temperatures. During controlled dyno tests, we have seen 15-20 degree drops on intake air temps.

Reduced weight off the nose of the car. Compared to the Koyo, this new radiator weighs approx. 2.5lbs less when fully filled.

The simple facts are that if you keep the coolant temps below 190 degrees, you are going to make more power. Also, if the intake air temp is cooler, you will also make more power.

This is really one of the must haves if you want to make power for a whole National race distance, even tucked up in a tight draft.


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Rebuilt Race Ready Transmissions

We are offering our Race ready rebuilt transmissions to the SM community. These transmission are fully gone through, All the synchros,sliders and shift forks are changed. We harden the shift forks for improved durability. We start with a street version, not a wore out trans that came out of a race car. We have sold over 350 of these transmissions and they really are the best out there. These aren't assembled by someone in their spare time, These are built by a professional who builds manual race boxes daily. They shift better than any I have ever driven and I have used them all. These transmissions have far less drag than any of the competitors units out there as well. They are set up perfectly and no detail is over looked.

We warranty all our transmissions for 60 days, races included. Who else does that?

We sell 90-05 transmissions, we don't need a core.

If you would like the showroom package of a bead blasting the case and new plated bolts please add $200, but IMO this is a complete waste of $$$ and not in my own car.

All boxes come with new hardened synchro springs and the counter shaft sleeve.
Add to cart then select your model year.


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interior mirror brackets

Most all of us have used mirrors that attach to the roll cage. Those mounts push the mirror too close to the driver. These staggered and adjustable brackets move the 14 in longacre mirror to the stock rear view mirror location. The brackets use two existing holes to locate themselves, no measuring or centering required. The brackets are staggered and adjustable to get the mirror in the desired position for every driver. Once installed and adjusted you will have no blind spots and be able to clearly see out the drivers and passengers windows as well as the back window. These brackets will make driving much easier than it was without them.


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Adjustable Endlinks

East Street Custom adjustable endlinks. These are the endlinks we use on all our cars. they come with all the necessary hardware and spacers, they fit perfectly in a Spec Miata. These links are the perfect length for SM. If you are not happy with these links, send thenm back for a full refund.


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Torsen swaps (1999/05)

These swaps will bolt right into your 90-93 SM. This will replace the fragile Mazda Comp differential and give you years of worry free racing. The swap comes with all the parts necessary to install into your car. It comes with the 4:30 torsen differential, the aluminum housing, both CV axles and the drive shaft. the swap come with a 6 month warranty.


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Hub seals 1990-2005

These seals are not available new or aftermarket anywhere. We have had them specially made for the SM hubs. We use these seals in all the hubs we build. The seals also provide far less drag than the factory seals. We only sell in pairs


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Fuel Pressure Regulator (99-05)

This regulator is engineered to work the same way Mazda designed the original system to work. With one regulator, with a return back to the tank. This ensures proper regulation of fuel pressure/pulse to the fuel injectors. Other products on the market piggy back a second regulator that does not return excess pressure to the tank but bleeds it off with the injectors opening and closing. This can cause an uneven pressure and pulse that the injectors can see, which can lead to fluctuating A/F ratios. In addition, regulating the fuel pressure by constricting the orifice size is tuning on the razors edge. You are limiting both the volume as well as the pressure of fuel supplied to the engine. This system does not limit the volume of the fuel, just the pressure it is delivered at. A large fluctuation of temperature when using "other products on the market" can lead to an extreme lean condition which can have catastrophic results, usually ending with an engine failure.
This kit is made to the highest standards using AN 6 and OE quick disconnect hardware. No hose clamps are used in this system at all. There is also no cutting or modifying of the OE hoses. All hoses are professionally made custom for the application and crimped to the fittings. The regulator is made by the leading manufacturer of fuel systems. This kit comprises all the best parts possible. Don't be fooled by cheaper inferior products on the market.
Our regulator is mounted in the trunk and not in the engine compartment. By mounting the kit in the trunk we keep it away from the heat of the engine compartment which can effect the temperature.
Adjustment is simple with one screw and the kit comes with a liquid filled gauge to monitor your pressure. There is also an additional un-used port on the regulator which can be used to add the optional fuel test port kit fitting.
Monitoring and tuning your AF ratio can help get the most performance out of your engine. This is the kit to have.
This kit comes complete with the following items:
• Adjustable Fuel Pressure Regulator
• Professionally made custom fuel lines (2)
• Instructions
• Liquid Filled Gauge
• Replacement Fuel Line


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Carbotech Brake Pads

Simply the best brake pad for your Spec Miata! We now carry the full line of Carbotech brake pads. Based on Carbotech’s recommendations we offer the XP8, XP10, and XP12 for race applications. The hot setup for most cars at most tracks is the XP8 rear pad, and the XP10 front pad.


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Calibrated Air flow meters

These are calibrated 1.6 Air flow meters that, all have been precisely set with our bench testing procedures and then dynoed to insure accuracy. These are as good as you can get, the best for power through the curve.

We will refund the $50 core charge, once the cores are returned.


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Front Lip (1999-2000)

Mazda Spec Miata OE-Style Front Lip (1999-2000)

Product from JAPAN made from high quality and flexible FRP. Gives a subtle but noticeable change to the look of the car by making it more aggressive. It will also make the car more stable at high speed.
Product Description

No cutting to the body needed
Flows really well with the lines of the car
Only available for NB8C-1 Miata (1998-2000)