Participating Manufacturers
The following links contain lists of product manufacturers that participate in the various SFI Performance Specifications Programs. Click on each particular spec number in the list below to see which companies certify their products to that spec. Certification that products meet SFI minimum standards is made by the product manufacturer. Products and Companies/Manufacturers are NOT certified, endorsed or approved by the SFI Foundation under this Program.
Manufacturer List
Replacement Flywheels and Clutch Assemblies
SFI Spec 1.1 | Manufacturers
Multiple Disc Clutch Assemblies for Vehicles with Naturally Aspirated Engines
SFI Spec 1.2 | Manufacturers
Nitro-Methane Drag Race Multiple Disc Clutch Assemblies
SFI Spec 1.3 | Manufacturers
Methanol Drag Race Multiple Disc Clutch Assemblies
SFI Spec 1.4 | Manufacturers
Multiple Disc Clutch Assemblies for Supercharged, Nitrous Oxide-injected, and Turbocharged Vehicles
SFI Spec 1.5 | Manufacturers
Driver Suits
SFI Spec 3.2 | Download
Driver Accessories
SFI Spec 3.3 – Download
Automatic Transmission Shields (Flexible Type)
SFI Spec 4.1 – Download
Automatic Transmission Shields (Rigid Type)
SFI Spec 4.1 – Download
Tractor Blankets
SFI Spec 4.2 – Download
Containment Bellhousing for SFI 1.1 & 1.2 two disc maximum Clutch Assemblies or SFI 1.1 & 1.2 three-disc (8-inch diameter maximum) Clutch Assemblies used only on naturally aspirated vehicles
SFI Spec 6.1 – Download
Passenger Car Replacement Containment Bellhousings with Adjustable Clutch Window for SFI 1.1 & 1.2 Single Disc Clutch or Two Disc (8-inch dia. Maximum) Clutch Assemblies Used Only on Naturally Aspirated Vehicles
SFI Spec 6.1W – Download
SFI Spec 6.2 Containment Bellhousing for SFI 1.3 & 1.4 Clutch Assemblies
SFI Spec 6.3 Containment Bellhousing for SFI 1.2 two disc or more Clutch Assemblies used on naturally aspirated vehicles or SFI 1.1, 1.2, 1.4, and 1.5 (two disc maximum) Clutch Assemblies used on supercharged/nitrous injected vehicles
SFI Spec 7.1 Lower Engine Containment Device
SFI Spec 7.2 Sportsman Lower Engine Containment Device
SFI Spec 14.1 Supercharger Restraint Devices
SFI Spec 14.2 Methanol Fuel Supercharger Restraint Devices
SFI Spec 14.21 Screw-Type Supercharger Restraint Devices
SFI Spec 14.3 Nitro-Methane Fuel Supercharger Restraint Devices
SFI Spec 14.4 Containment Valve Covers/Valve Cover Shields
SFI Spec 15.1 Drag Race Drive Wheels
SFI Spec 15.2 Drag Race Front Wheels
SFI Spec 15.3 High Horsepower Drag Race Drive Wheels
SFI Spec 15.4 Top Fuel and Funny Car Drag Race Drive Beadlock Wheels
SFI Spec 16.1 Driver Restraint Assemblies
SFI Spec 16.5 Stock Car Driver Restraint Assemblies
SFI Spec 17.1 On Board Fire Suppression Systems
SFI Spec 18.1 Crankshaft Hub Harmonic Dampers
SFI Spec 20.1 Go-Kart Chest Protector (Youth Driver)
SFI Spec 23.1 Supercharger Pressure Relief Assemblies
SFI Spec 24.1 Youth Full Face Helmets
SFI Spec 27.1 Window Nets
SFI Spec 28.1 Polymer (Foam-Filled) Fuel Cells
SFI Spec 28.2 Crash Resistant Fuel Cells
SFI Spec 29.1 Automatic Transmission Flexplates
SFI Spec 29.2 High Horsepower Automatic Transmission Flexplates
SFI Spec 29.3 Automatic Transmission Flexplates for Diesel Applications
SFI Spec 30.1 Automatic Transmission Flexplate Shields
SFI Spec 31.1 Flame Resistant Motorsports Helmets
SFI Spec 32.1 Stock Car Fuel Cell Bladder
SFI Spec 32.2 Stock Car Fill/Vent Check Valve Assembly
SFI Spec 34.1 Screw-Type Superchargers
SFI Spec 35.1 Stock Car Steel Wheels
SFI Spec 36.1 Drag Boat Capsule Shell Material
SFI Spec 36.2 Drag Boat Capsule Canopy Material
SFI Spec 37.1 Roll Cage Nets
SFI Spec 38.1 Head and Neck Restraint Systems
SFI Spec 39.1 Stock Car Type Racing Seats (Custom)
SFI Spec 39.2 Stock Car Type Racing Seats (Standard)
SFI Spec 40.1 Abrasion Resistant Driver/Rider Suits
SFI Spec 41.1 Motorsports Helmet
SFI Spec 42.1 Steering Wheel Quick Disconnect/Release
SFI Spec 43.1 Drive Shafts
SFI Spec 44.1 Stock Car Wheel Spacers
SFI Spec 45.1 Roll Bar Padding
SFI Spec 45.2 Impact Padding
SFI Spec 46.1 Nitro-Methane Fuel Motorcycle Engine Restraint Devices
SFI Spec 48.1 Shift Boot Covers
SFI Spec 49.1 Top Fuel Rear Wing
SFI Spec 49.2 Top Fuel Front Wing
SFI Spec 52.1 Fueler Apron
SFI Spec 54.1 Non Flammable, Thermal Barrier / Fire Extinguishing Coatings
SFI Spec 56.1 NASCAR Dashboard and Other Carbon Fiber Components
SFI Spec 61.1 Turbochargers