| Pocklington_Coachworks Manufactures hospitality units, race support trailers and support vehicles in motorsport. |
| Precision_Racecraft Chassis fabrication and performance engine building. |
| Price_Motorsport_Engineering_Inc_ Manufacturer of high performance race car components. |
| Procell_Brothers_Performance_Center Offers racing engines, assemblies and cylinder heads. Includes photos and engine specifications. |
| Prodrive Design, build and run motorsport and vehicle technology programmes for vehicle manufacturers. Programmes include Subaru World Rally Team, Ferrari 550GTS Maranello and BAR Formula 1. |
| Professional_Products_auto_parts High performance automotive parts and accessories including intake manifolds, harmonic dampers and Powerflow fuel filter. |
| Prorev Complete line of performance reed valves for karting, ATV, and motorcycles. |
| Race_Power_Pro_TransAm_Racing Trans-Am Team who rents out Corvette and Camaros to drivers for GT1, AGT, and TransAm Racing, from Murfreesboro, Tennessee. |
| Racefab_Roadrace_Chassis_and_Design Racefab constructor of road race chassis for GARRA, SCCA, CART, Driving 101 and IMSA competition. Designs available for Trans-Am and Sports Racers. |
| RaceTechFab_com Northwest racing shop specializing in cage, frame, suspension and interior fabrication for SCCA, circle track, drag racing and street rods. |
| Racing_Interaction Based in Amsterdam and specializes in racing simulation for professional and entertainment markets. |
| The_Racing_Rep Wholesale distribution for the racing industry for performance and racing aftermarket parts. |
| Rally_Systems Rally equipment supplier specializes in suspension and transmission. |
| Rapp_Fabricating,_Inc Go-kart header manufacturer. |
| Rebco_Performance_Products Specializing in setup tools, electronic wheel scales, gauges, chassis set-up, and timing products. |
| Redline_Pro_Racing Offers discussion forum, links, technical tips and dyno information. |
| Revolution_Marketing Offers motorsport events for all rotary vehicle owners and enthusiasts. |
| Revolutionary_Performance_and_Machine,_LLC High performance and racing oriented machine shop with Superflow SF600 flowbench and head porting services. |
| Roman_Racing Engine conversions for the Alfa Romeo Spider. |
| Ron_Davis_Racing_Products Racing radiators, fans, shrouds and fittings. |
| RTS_Chassis,_Inc_ Offers frame, axle, and pipe repairs, as well as engine and chassis building. Includes description of services, company information and list of clients. |
| Slingshot_by_Tobias Offers fully assembled slingshot race cars along with the parts and accessories. |
| Smith_Racing_Engines Builds custom race engines for dirt cars, drag cars, and street rods. |
| Sniper Kart wheel alignment system using laser technology. Dealer list available. |
| Solid_State_Racing Specializes in taking Automotive Electronics and developing solutions for racing professionals and street-cars. |
| Speed_Merchants,_Ltd_ Autosports event management service. Also organizes on-track driving schools and track days for exotic car dealerships, corporations, and car clubs. |
| Speedway_Motorsports,_Inc_ Official site for information about the corporation that owns Atlanta, Bristol, Las Vegas, Lowe's and Texas Motor Speedways plus the Performance Racing Network. |
| Sports2000_Van_Diemen Distributers for the Van Diemen Sports2000 race car. |
| Steve_Schmidt_Racing Information on the shop, merchandise and race results. |
| Strudwick_Motorsports Providing Race car rentals including Corvette and Camaro Grand Am style cars. |
| TD_Performance_Products Car parts for hot rods, sport trucks, street rods, muscle cars, 4 x 4 trucks, off-road vehicles and race parts for circle track and drag racing applications. |
| Team_Biland Karting engine manufacturer. Includes company information, technical support and news. |
| Team_MMI Home to the Birel line of racing karts. |
| TecnoelettraGroup High specification electrical solutions for all formulas of motorsport based on aerospace technology. |
| TecPro Technic Protection Corporation system of low-wall protection, designed to improve security around the track for drivers and staff. |
| Throw_N\'_Dirt_Chassis Builds custom made American Motor Racing Association (AMRA) modified dirt track racing chassis. |
| Thunder_Mountain_Wings Manufacturer of lightweight sprint car wings. |
| Tiger_Rear_Ends Manufactures high performance rear end assemblies. |
| Twister_Karts_and_Parts,_Inc_ Manufactures high performance go-kart chassis for oval dirt and asphalt racing. |
| TXM_Race_Engines Engine builders for karting, marine, motocross and snowmobiles. |
