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A New Product->
Adjustable PCV Valve Stops Leaks
Air Conditioning Custom Kits->
Automotive and Marine Covers
Brakes->
Carburetor Modifications
Carburetors->
Chrome Accessories->
Chute Kits->
Clutches->
Cold Air Kits->
Custom Hoods->
Custom Parts Development->
Cylinder Head Porting->
Electric Cooling Fans->
Electronics and Delay Boxes->
Engine Blocks
Engine Parts->
Engine Swap Kits
Engines->
Exhaust Components->
Exterior Vehicle Components->
Fasteners->
Fire Equipment->
Floor Mats->
Fuel Injection Systems
Fuel System Components->
Gaskets->
Gauges->
Gear Venders Overdrive Units
Ignition Components->
Lift Kits->
Lowering Kits->
Nitrous Kits->
Race Car Bodies->
Race Wear and Accessories->
Radiators and Components->
  |_ Be Cool Radiators
  |_ Blitz Radiator Caps
  |_ C&R Radiators
  |_ Flexalite Radiators
  |_ Fluidyne Radiators
  |_ Ford Racing Radiators
  |_ Frostbite Radiators
  |_ Granatelli Radiators
  |_ Greddy Radiator Caps
  |_ Griffin Radiators
  |_ KARMA Radiators
  |_ Moroso Cooling System Components
  |_ Northern Radiators
  |_ Perma Cool Radiators
  |_ TRD Radiator Caps
  |_ Walker Radiators and Components
Rear End->
Roll Cages and Accessories->
Seats and Custom Interiors->
Shocks->
Spark Plugs->
Striker Viper heads Return
SuperChargers->
Suspension Components->
Tech Help
Throttle Bodies->
Tires->
Traction Components->
Transmission Components->
Tuning and Controllers->
Turbocharging->
Valvetrain Components->
Viper
Water Pumps->
Wheels->
Wideband Monitoring Systems->
Wiring harness and Accessories->

Customers

Darren B.

Darren B.

John,Racing flat out on the 440/533 engine over 1 season & 65 passes at 8.97@150mph 1.27 60' getting great results!!Engine is GREAT!Thanks mate!
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Brian A.

Brian A.

The 408 engine runs strong, put on dyno 405hp with 415tq N/A not shabby.. also was on 22" wheels with those numbers est. 500-525 @ crank. Thanks so...
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William K.

You do outstanding work man. My whole crew is ready to see your work in action ;-)
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Andrew R.

Andrew R.

I am very pleased with the quality of the magnum deep pan, and the best part is that it really is not much deeper than the stock pan so I dont have...
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Troy K.

Troy K.

Thanks for all your great help with my Viper.
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Harold R.

John, Thanks for the great customer service! Harold
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Robbie C.

Robbie C.

Great job all round !
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Steven

Southeast Performance and John Mercedes have been "OUTSTANDING" to do business with. I couldn't be happier.
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Benny C.

Benny C.

Thanks for the Great Mopar Service !
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Michael W.

Michael W.

After getting all the compatible stuff shes a beast! Michael
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Marko T.

Marko T.

Hi John! Thanks again for the great service! Marko T. Finland
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William K.

William K.

Well your service is amazing if you want my opinion. Never had better from any company I've ordered from. William K.
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Toby W.

John, Thanks again so much. You're truly awesome.
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Jim W.

Jim W.

Thanks for the fast parts service and Great cylinder head porting! Jim
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Chris B.

Chris B. won the late model feature easily Texas Motor Speedway.
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Dan B.

Dan B.

Dakota R/T 408, Thanks for everything! Dan https://www.youtube.com/watch?v=wZekmXKYXA4
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Matt C.

Thanks again John, someone who’s willing to help and not just sell parts. So, looks like you’ll be listed on my referrals. Keep in touch. Thanks...
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Scot C.

Scot C.

Thanks for everything John. We will be doing business again. At Nationals 6.38 on a 6.54 dial in.
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Bruce P.

Bruce P.

You’ve got a big fan in me. Oh yeah, the car is awesome. Runs like a raped ape. So thanks a lot !
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Ossi L.

you come highly recommended to me by Finnish racers!
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Kayden G.

Kayden G.

Well your service is amazing. Never had better from any company I've ordered from! Kayden
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Ricky R.

Ricky R.

1937 Chevy Legends Race Car, Thanks for everything!
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Steve V.

Steve V.

You are the only guy who I trust to do the most important thing I'll ever do to my Roadrunner, a car that means more to me than any inanimate object...
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Vincent G.

Thanks for all, Your shop is very highly recommended by a lot of Dakota/Durango owners up here in Canada.
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Maurice

Maurice

Maurice 73 Dodge Dart
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TRD Radiator Caps

Upping the valve opening pressure of the pressure regulator on the radiator cap to allow higher radiator pressure increases the boiling point of the coolant, reduces bubbles, improves cooling, and generally maximizes the cooling performance of the radiator. We increased the valve opening pressure of the TRD radiator caps to 127 kpa (1.3 kg/cm2) and 147 kpa (1.5 kg/cm2). Thus, another full-fledged design that arose from racing car development makes its appearance.




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