| Kincaid_Performance_Inc_ Electric intercooling for turbocharged and supercharged applications. |
| Kowalsky_Motorsports Preparation and modification of club racing cars, engines, suspensions or roll cages. |
| KP_Motorsport Motorsport repairs and race preparations along with general car repairs, sales, servicing in the UK. |
| KSE_Racing_Products Offers racing products for the dirt track, midget, sprint and stock car markets. Includes product catalog. |
| KT_Racing Provides driver promotion and sponsor services to teams and individuals. |
| KTR_Motorsports Offers race prep and restoration of vintage car needs. |
| Ladd\'s_Porting_Service Performance cylinder head machining, porting, milling, guides and valve job services. |
| Le_Mans_Motorsport Offers Rally and Kart race preparation. |
| Legends_Race_Hire An organization based at the Knockhill Circuit near Edinburgh, Scotland. They provide Legends Cars for hire. |
| Lemons_Headers Manufactures high performance custom headers. |
| Lesco_Engine_Machine Rebuilders of vintage race car motors, includes engine rebuilding and service. |
| Looney_Tuned_Exhaust Manufacturer and distributor of Mini-Outlaw high performance racing pipe systems. |
| Ls_Developments_UK_Ltd Manufacturers fabricated and machined parts for racing cars. Also offers complete design concept and production. |
| Lucas_Oil_Products_Inc Manufacturer of petroleum additives and oils for high performance engines. |
| M_&_M_Performance_Bodies Manufactures high performance go-kart bodies for oval dirt and asphalt racing. |
| Mangus_Precision_Pumps Manufacturer of dry sump oil pump systems. |
| Maximum_Street_Performance High-performance motorcycle center. |
| Maxxis Europe karting tyres program. Information about dealers, programs, and product specifications. |
| McKenna_Motorsport Restoration and race preparation for classic Lotus and Ford for road, historic race or rally. |
| Mind_Science_Motorsports Drag racing consultants. |
| Mirage_Motorsport Specializes in the restoration, race preparation and race day engineering of single seater racing cars. |
| MM_Competition_Systems_Ltd_ Offers sales and support for electronic systems and components for autos and motorcycles. |
| Montana_Brothers Drag racing chassis specialists covering chassis design and fabrication, modification and tuning. |
| Moore_Racing Specializes in preparation and setup of motorsports cars. Also offers support, maintenance and performance upgrades for TVR racing cars and sports cars. |
| MW_Competizioni Measuring and data recording systems, sensors and cables, electronic ignition and injection. |
| Neverlift__Racecraft Designs, builds and tests a variety of vehicles for drag and road racing. |
| Newton_Equipment_Ltd Designers and manufacturers of high performance tank filler caps for the automotive, aerospace and defense industries. |
| North_Carolina_Motorsports_Association A nonprofit corporation designed to be a representative for the motorsports industry in North Carolina. Information on mission, membership and events. |
| Northeast_Race_Cars_and_Parts Specializing in asphalt oval track cars, parts, accessories and service. |
| Octave_Engineering A high performance engineering consultancy and vehicle manufacturer, concentrating on motorsport development, engineering and design. |
| Off_Camber_Racing Specializes in building, renting, preparing, and tuning Spec Miata race cars. |
| Orz_Motorsport Volkswagen G60 service, performance upgrades, repairs and compressor systems. |
| Parr,_Porsche_Servicing_and_Motorsport Offers Porsche servicing, including maintenance, repairs, restoration and performance upgrades. |
| Peltor_Motorsport_Communications Manufactures helmets and intercoms designed for rallying. The systems are able to incorporate mobile phones and radios. |
| Performance_Engineering Custom and standard roll bars and roll cages for motorsports, racing, and enthusiasts. |
| Performance_Welding Competition racing headers and exhaust components. |
| Performancenter_Racing_Warehouse New and used race cars and parts. Also complete body and chassis fabrication shop. |
| PFM_Engineering Race and performance tuning. |
| PFM_Racing A SCCA team and Race Shop which specializes in roll cage construction and racecar fabrication. |
| Pioneer_Motorsports Manufacture of mini-sprint racing parts and distributor of Weld Racing wheels. |
