SpeedCircuit

1513 products ★ 4.5

SpeedCircuit focuses on automotive performance and tuning of turbocharged imports. Founded in 2006, SpeedCircuit has been dedicated to perfecting the science of speed.

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Megan Racing Lowering Springs for the Protege 5

Megan Racing Lowering Springs for the Protege 5

USD 199.99
Megan Racing Short Shifter w/ Shift Knob

Megan Racing Short Shifter w/ Shift Knob

USD 59.99
CXRacing T3 .48 AR 8PSI TURBO 2.5" V-BAND EXHAUST 0.60 AR COMPRESSOR

CXRacing T3 .48 AR 8PSI TURBO 2.5" V-BAND EXHAUST 0.60 AR CO

USD 371.33
SpeedCircuit Fuel Cut Defender (FCD - Formerly JoeP FCD)

SpeedCircuit Fuel Cut Defender (FCD - Formerly JoeP FCD)

USD 79.99
Universal Chrome Oil Catch Tank

Universal Chrome Oil Catch Tank

USD 69.95
Pauter Billet Rods for Mazda Protege FS Motors

Pauter Billet Rods for Mazda Protege FS Motors

USD 1,299.00
Arias Forged Aluminum Pistons for FS Motor

Arias Forged Aluminum Pistons for FS Motor

USD 749.95
HKS SSQ Weld-On Flange Kit

HKS SSQ Weld-On Flange Kit

USD 36.99
Cometic FS Engine 84mm Head Gasket

Cometic FS Engine 84mm Head Gasket

USD 119.99
Cometic FS Engine 84.5mm Head Gasket

Cometic FS Engine 84.5mm Head Gasket

USD 149.99
Stoptech Front Rotor Pair - Protege 5, ES, & MP3

Stoptech Front Rotor Pair - Protege 5, ES, & MP3

USD 239.46
AWR Front Engine Mount for Protege

AWR Front Engine Mount for Protege

USD 95.00
SpeedCircuit Forged FS-DE 2.0L Protege engine

SpeedCircuit Forged FS-DE 2.0L Protege engine

USD 7,446.45
Replacement Used 2.0L FS-DE Engine

Replacement Used 2.0L FS-DE Engine

USD 1,299.00
Replacement Used 5-Speed Manual Transmission for Protege

Replacement Used 5-Speed Manual Transmission for Protege

USD 999.99
Factory ECU for 2.0L Manual Trans Protege

Factory ECU for 2.0L Manual Trans Protege

USD 159.99
Cometic FS Engine 84.5mm LOW COMPRESSION Head Gasket

Cometic FS Engine 84.5mm LOW COMPRESSION Head Gasket

USD 139.99
Cometic FS Engine 84mm LOW COMPRESSION Head Gasket

Cometic FS Engine 84mm LOW COMPRESSION Head Gasket

USD 139.99
Factory ECU for MazdaSpeed Protege

Factory ECU for MazdaSpeed Protege

USD 399.99
Internal Wastegate Actuator - Special 7 psi

Internal Wastegate Actuator - Special 7 psi

USD 116.12
Tial 38mm Wastegate (aka F38)

Tial 38mm Wastegate (aka F38)

USD 313.64
SpeedCircuit Ported Head (FS Engine)

SpeedCircuit Ported Head (FS Engine)

USD 1,349.00
SpeedCircuit Gift Certificate

SpeedCircuit Gift Certificate

USD 1.00
AWR Rear Engine Mount

AWR Rear Engine Mount

USD 88.99