S-A Design Books [SAB]
http://www.cartechbooks.com
Performance and .How To. books.



SCE [SCE]
http://www.scegaskets.com
Copper gaskets



SCS [SCS]
http://www.scsgearbox.com
Quick change gears



SCT Performance [SCT]
http://www.sctflash.com
Performance tuning modules and related components



SLP Performance Parts, Inc. [SLP]
http://www.slponline.com
Performance automotive accessories



ST Suspension [SUS]
http://www.stracing.com
Special Order Only - Performance suspension components



Safecraft [SFC]
http://www.safecraft.com
Fire saftey products



Saldana Racing Tanks [PLA]
http://www.saldanaracingproducts.com
Oil tanks



Sander Engineering [SND]
http://www.sanderengineering.com
Sprint car components



Sanderson Headers [SAN]
http://www.sandersonheaders.com
Headers



Scat Cranks [SCA]
http://www.scatcrankshafts.com
Crankshafts



Schoenfeld Headers [SCH]
http://www.schoenfeldheaders.com
Circle track headers and accessories



Schroeder Racing Products [SHR]
http://www.schroedertorsionbars.com
Torsion bars, sway bars and related components



Scorpion Performance Inc. [SPN]
http://www.scorpionperformance.com
Performance valve train components



Scribner [SCR]
http://www.scribnerplastics.com
Fuel jugs and funnels



Sealed Power [SEA]
http://www.federal-mogul.com/en/Aftermar...
Engine parts & chassis parts



Seals-It [SIC]
http://www.sealsit.com
Seals



Sharp Rockers [SHP]
http://www.harlandsharp.com
Aluminum roller tip rocker arms



Shifnoid [SHF]
http://www.contenderperformance.com
Air and electric racing shifters



ShurTrax [SHU]
http://www.shurtrax.com
Non-scuff all weather traction products



Silv-O-Lite [KBP]
http://kb-silvolite.com
Performance pistons



Simpson [SIM]
http://www.simpsonraceproducts.com
Helmets and safety equipment



Skyjacker Suspension [SKY]
http://www.skyjacker.com
Truck performance suspension systems and components



Spal [SPA]
http://www.spal-usa.com
Performance electric fans



Sparco Motor Sports Inc. [SCO]
http://www.sparcousa.com
Safety equipment (gloves, suits, belts, seats)



Specialty Products Company [SPC]
No web site listed
Chrome accessories,



Spectre [SPE]
http://www.spectreperformance.com
Engine dress-up accessories



Speed-Pro [SEA]
http://www.federalmogul.com/en/Aftermark...
Engine parts & chassis parts



Sportsman Racing Products [SRP]
http://www.srp.com
Racing pistons



Sprint Booster [SBP]
http://www.sprintboosterusa.com/
Throttle control booster



Stack [SDA]
http://www.stackltd.com
Performance gauges and data logging



Stage 8 Fasteners [SGE]
http://www.stage8.com
Locking Fasteners



Stainless Steel Brakes [SSB]
http://www.stainlesssteelbrakes.com
.Performance Brakes and related components .



Standard Abrasives [STA]
http://www.standardabrasives.com/wps/por...
Porting, polishing and gasket removal kits



Steeda [STD]
http://www.steeda.com
Performance Mustang Products



Stef's Performance Products [STF]
http://www.stefs.com
Oils pans and accessories



Stellar [SAS]
http://www.thehoffmangroup.com/stellar/
Automotive security systems



Steve Smith Autosports [SSA]
http://www.ssapubl.com
.Automotive racing .How-To. books.



Stewart Components [STE]
http://www.stewartcomponents.com
Performance water pumps



Stock Car Products [SCP]
http://www.scpdrysumps.com
Dry sump pumps and accessories



StopTech [STP]
http://www.stoptech.com
Special Order Only - Performance brake systems



Strange Engineering [STG]
http://www.strangeengineering.net
Driveline components, axles and ring and pinions



Stroud Safety Inc. [STR]
http://www.stroudsafety.com
Safety equipment



Sunpro [SPT]
http://www.sunpro.com
Tachometers and gauges



Superchips Inc. [SCI]
http://www.superchips.com
Engine performance programmers



Superior Axle and Gear [SAG]
http://www.superioraxlegear.com
Performance axles and gears



Supertrapp [SPR]
http://www.supertrapp.com
Performance exhaust mufflers



Superwinch [SUP]
http://www.superwinch.com
Hubs, winches and accessories



Suspension Spring [SSS]
http://www.bluecoilspring.com
Coil-over and stock car springs



Sweet Manufacturing [SWE]
http://www.sweetmfg.biz
Steering components and accessories



Swift Springs [SWI]
http://www.swiftsprings.com/
Racing coil springs



System One [SYS]
http://www.system1filters.com
Fuel filters