C-D
- C AND R RACING RADIATORS
- C-LINE ENGINEERING
- Calico Coatings
- CALIFORNIA CAR DUSTER
- CALLIES
- CANTON
- Carisma
- CARR
- CARRILLO RODS
- CARTER
- CEN Racing
- CENTERFORCE
- CENTRIC BRAKE PARTS
- CHAMP PANS
- CHAMPION BRAND
- CHAMPION PLUGS
- CHASSIS ENGINEERING
- CHASSIS R AND D
- CLASSIC DASH
- Classic Instruments
- CLAYTON MACHINE WORKS
- CLEAR ONE
- CLOYES
- CNC BRAKES
- COAN
- COKER TIRE
- COLD AIR INDUCTIONS
- COLD CASE RADIATORS
- COLEMAN MACHINE
- COMETIC GASKETS
- COMP CAMS
- COMPETITION ENGINEERING
- COMPUTECH SYSTEMS
- CONROY BLEEDERS
- COOL SHIRT
- Corally
- CORSA PERFORMANCE
- Covercraft
- CP PISTONS-CARRILLO
- CRANE
- Cross RC
- CROW ENTERPRIZES
- CROWER
- CSR PERFORMANCE
- CTEK
- Currie Enterprises
- CURT MANUFACTURING
- Cusco
- CVR PERFORMANCE
- CYCLO
- Cylinder Head Innovations
- DART
- DARTON SLEEVES
- DAYSTAR PRODUCTS INTERNATIONAL
- DAYTONA SENSORS
- DE Racing
- DEATSCHWERKS
- DEDENBEAR
- DEE ZEE
- DEFENDER RACE BODIES
- DEIST SAFETY
- DEL WEST
- DEMON CARBURETION
- DERALE
- DESIGN ENGINEERING
- DETROIT LOCKER-TRACTECH
- DETROIT SPEED ENGINEERING
- DHK Hobby
- DIABLOSPORT
- DIAMOND RACING PRODUCTS
- Diecast Masters
- DIRT DEFENDER RACING PRODUCTS
- DIVERSIFIED MACHINE
- DOMINATOR RACING PRODUCTS
- DOUGS HEADERS
- DRACO RACING
- DRAKE AUTOMOTIVE GROUP
- DRIVEN RACING OIL
- Driven Steering Wheels
- Drp Performance
- DSS RACING
- Dubro
- DUPLI-COLOR
- DURA-BOND
- Durasand
- DYERS RODS
- DYNAMAT
- DYNATECH
- DYNOMAX
- Carrillo
- Carven Exhaust
- Castle Creations
- Chemical Guys
- Clevite
- Clutch Masters
- Cometic Gasket
- Competition Clutch
- CP Pistons
- CSF
- Curt
- DBA
- DDP
- Defi
- DEI
- Diamond Eye Performance
- DKM Clutch
- Driveshaft Shop
- DV8 Offroad