• 
  R and M Specialties
  http://www.rmspecialties.com/
  Hi-tech wire looms
• 
  R2C Performance Products
  http://www.r2cperformance.com/
  High performance air filters and air cleaner assemblies
• 
  Race Cover-Alls
  http://www.racecoveralls.com
  Custom fit race car covers for Outlaw, Dirt, IMCA, and Truck chassis
• 
  Race Ramps
  http://www.raceramps.com
  Ramps and accessories
• 
  Race Ready Performance
  http://www.racereadyperformance.com
  Electric exhaust cutouts
• 
  Race Star Industries
  http://www.racestarindustries.com/
  Aluminum wheels
• 
  Racebolt
  http://www.racebolt.com
  Chrome moly tubular bolts
• 
  RACEceiver
  http://www.raceceiver.com
  Race scanners
• 
  Racepak
  https://www.racepak.com/
  Data logging equipment and accessories
• 
  RaceQuip
  http://www.racequip.com
  Safety equipment and related accessories
• 
  Racer’s Choice Inc.
  http://www.rciracing.com/
  Fuel cells and safety equipment
• 
  Racing Electronics
  http://www.racingelectronics.com
  Racing radios, scanners and related components
• 
  Racing Head Service
  http://www.racingheadservice.com
  Aluminum and Iron Cylinder Heads
• 
  Racing Optics Inc.
  http://www.racingoptics.com
  Laminated tear-offs
• 
  Racing Power Company – Packaged
  http://www.racingpowercompany.com/
  Packaged aluminum and steel engine accessories
• 
  Ram Automotive
  http://www.ramclutches.com
  Clutches and flywheels
• 
  Rancho Suspension
  http://www.gorancho.com
  Truck performance suspension systems and components
• 
  Rapco
  No web site listed
  Performance brake products,
• 
  Ratech
  http://www.ratechmfg.com
  Rear end rebuild components
• 
  RE Suspension
  http://www.resuspension.com
  Bump stops and components
• 
  Ready Lift
  http://www.readylift.com
  Truck suspension leveling kits
• 
  Rebco
  http://www.rebcoperformance.com/
  Circle track accessories,
• 
  Red Line Oil
  http://www.redlineoil.com
  Performance lubricants
• 
  Reese Hitches
  http://www.reeseprod.com
  Towing systems and accessories
• 
  Reid Racing
  http://www.reidracing.biz
  Performance transmissions and off-road racing products
• 
  Remflex Exhaust Gaskets
  http://catalog.remflex.com
  Performance exhaust gaskets
• 
  Replay XD
  http://replayxd.com
  Motorsports cameras and accessories
• 
  Richmond Gear
  http://www.richmondgear.com
  Ring and pinion sets
• 
  Ricochet Shock Guard
  No web site listed
  Circle track shock protection
• 
  Ridetech
  http://www.ridetech.com
  Air suspension systems
• 
  Right Stuff Detailing
  http://www.getdiscbrakes.com
  Brake conversion kits and brake accessories
• 
  Rigid Industries
  http://www.rigidindustries.com/
  Performance LED lighting
• 
  Ringbrothers
  http://www.ringbrothers.com
  Billet styling accessories
• 
  Ringers Resource
  http://www.ringersgloves.com
  Pit gloves and accessories
• 
  RJS Racing Equipment
  http://www.rjsracing.com
  Racing and safety equipment
• 
  Robic
  http://www.robictimers.com
  Stopwatches
• 
  Rocket Racing Wheels
  http://www.rocketracingwheels.com/
  Street wheels and accessories
• 
  Rollmaster Romac
  http://www.romacusa.com/
  Performance timing chains and dampers
• 
  Rough Country Suspension
  http://www.roughcountry.com
  Truck lift kits and shocks
• 
  Roush Performance Products
  http://www.roushperf.com
  Performance automotive accessories
• 
  Royal Purple
  http://www.royalpurple.com
  Performance lubricants
• 
  Russell Performance Prod.
  http://www.russellperformance.com
  Performance fittings