Specification List
SFI maintains a quality assurance program for a wide variety of automotive aftermarket and performance products. This expansive catalogue of SFI specifications is used by many sanctioning bodies world wide. In this list, the number on the left is the SFI specification number followed by the product that is covered by the spec. The recertification period is the amount of time from the manufacture date when a product must be sent to the original manufacturer for inspection and then either recertified or replaced, based upon the findings of the inspection. Please note the time period shown is NOT the retest period for manufacturers. For more information regarding any of these specifications, please contact the SFI office.
Replacement Flywheels and Clutch Assemblies
SFI Spec 1.1 | Manufacturers
Effective Date: Nov. 9, 2001
Multiple Disc Clutch Assemblies for Vehicles with Naturally Aspirated Engines
SFI Spec 1.2 | Manufacturers
Effective Date: Feb. 9, 2006
Nitro-Methane Drag Race Multiple Disc Clutch Assemblies
SFI Spec 1.3 | Manufacturers
Effective Date: May 23, 2000 (edited Feb. 23, 2016)
Methanol Drag Race Multiple Disc Clutch Assemblies
SFI Spec 1.4 | Manufacturers
Effective Date: May 23, 2000
Multiple Disc Clutch Assemblies for Supercharged, Nitrous Oxide-injected, and Turbocharged Vehicles
SFI Spec 1.5 | Manufacturers
Effective Date: Feb. 9, 2006
Driver Suits
SFI Spec 3.2A | Manufacturers
Effective Date: Jun. 26, 2020
Driver Accessories
SFI Spec 3.3 | Manufacturers
Effective Date: Apr. 1, 2022
Advanced Driver Suits
SFI Spec 3.4 | Manufacturers | 3.4/1 Suit Models | 3.4/5 Suit Models
Effective Date: Oct. 19, 2019
Containment Bellhousing for SFI 1.1 & 1.2 Clutch Assemblies for limited normally aspirated applications, and forced induction applications with torque converters
SFI Spec 6.1 | Manufacturers
Effective Date: Apr. 1, 2022
Passenger Car Replacement Containment Bellhousings with Adjustable Clutch Window for SFI 1.1 & 1.2 Clutch Assemblies for limited normally aspirated applications, and forced induction applications with torque converters
SFI Spec 6.1W | Manufacturers
Effective Date: Apr. 1, 2022
Containment Bellhousing for SFI 1.3 & 1.4 Clutch Assemblies for Nitro-methane, Top Alcohol, and heavy-duty tractor applications
SFI Spec 6.2 | Manufacturers
Effective Date: Apr. 1, 2022
Containment Bellhousing for SFI Clutch Assemblies for supercharged and nitrous-oxide applications
SFI Spec 6.3 | Manufacturers
Effective Date: Apr. 1, 2022
Driver Restraint Assemblies
SFI Spec 16.1 | Manufacturers
Effective Date: Feb. 26, 2014
Restraint Assemblies for Youth Drivers
SFI Spec 16.2 | Manufacturers
Effective Date: Feb. 26, 2014
Stock Car Driver Restraint Assemblies
SFI Spec 16.5 | Manufacturers
Effective Date: Dec. 29, 2014
Advanced Motorsport Driver Restraint Assemblies
SFI Spec 16.6 | Manufacturers
Effective Date: Apr. 20, 2018
On Board Fire Suppression Systems
SFI Spec 17.1 | Manufacturers | Products List
Effective Date: Jun. 26, 2020
Single Seat Open Wheel Rear Engine On Board Fire Suppression Systems
SFI Spec 17.2 | Manufacturers
Effective Date: Apr. 19, 2019
Single Seat Open Wheel Front Engine On Board Fire Suppression Systems
SFI Spec 17.3 | Manufacturers
Effective Date: Apr. 1, 2022
Crankshaft Hub Harmonic Dampers
SFI Spec 18.1 | Manufacturers
Effective Date: Aug. 26, 2016
Go-Kart Chest Protector (Youth Driver)
SFI Spec 20.1 | Manufacturers
Effective Date: Jul. 26, 2010
Youth Full Face Helmets
SFI Spec 24.1 | Manufacturers
Effective Date: Mar. 12, 2021
Window Nets
SFI Spec 27.1 | Manufacturers
Effective Date: Oct. 11, 2006
Competition Fuel Cell Bladder
SFI Spec 28.3 | Manufacturers
Effective Date: June 17, 2022
Flame Resistant Motorsports Helmets
SFI Spec 31.1 | Manufacturers
Effective Date: Mar. 27, 2013
Stock Car Fuel Cell Bladder
SFI Spec 32.1 | Manufacturers
Effective Date: Jun. 26, 2020
Stock Car Fill/Vent Check Valve Assembly
SFI Spec 32.2 | Manufacturers
Effective Date: Mar. 24, 2009
Stock Car Steel Wheels
SFI Spec 35.1 | Manufacturers
Effective Date: Aug. 26, 2008
Heavy Duty Stock Car Steel Wheels
SFI Spec 35.2 | Manufacturers
Effective Date: Nov. 11, 2022
Alloy Stock Car Wheels
SFI Spec 35.3 | Manufacturers
Effective Date: Oct. 22, 2020
Roll Cage Nets
SFI Spec 37.1 | Manufacturers
Effective Date: Oct. 11, 2006
Head and Neck Restraint Systems
SFI Spec 38.1 | Manufacturers
Effective Date: Apr. 19, 2019
Stock Car Type Racing Seats (Custom)
SFI Spec 39.1 | Manufacturers
Effective Date: Mar. 16, 2015
Racing Seats (Standard)
SFI Spec 39.2 | Manufacturers
Effective Date: Mar. 12, 2021
Abrasion Resistant Driver/Rider Suits
SFI Spec 40.1 | Manufacturers
Effective Date: Nov. 4, 1993
Motorsports Helmet
SFI Spec 41.1 | Manufacturers
Effective Date: Mar. 27, 2013
Steering Wheel Quick Disconnect/Release
SFI Spec 42.1 | Manufacturers
Effective Date: Feb. 15, 1996
Drive Shafts
SFI Spec 43.1 | Manufacturers
Effective Date: Aug. 25, 2017
Stock Car Wheel Spacers
SFI Spec 44.1 | Manufacturers
Effective Date: Aug. 11, 2005
Roll Bar Padding
SFI Spec 45.1 | Manufacturers
Effective Date: Aug. 11, 2005
Impact Padding
SFI Spec 45.2 | Manufacturers
Effective Date: Mar. 27, 2013
Shift Boot Covers
SFI Spec 48.1 | Manufacturers
Effective Date: Jul. 19, 2007
Fueler Apron
SFI Spec 52.1 | Manufacturers
Effective Date: Jun. 5, 2012
Non Flammable, Thermal Barrier / Fire Extinguishing Coatings
SFI Spec 54.1 | Manufacturers
Effective Date: Jan. 17, 2008
NASCAR-Type Tethers
SFI Spec 55.1 | Manufacturers
Effective Date: Mar. 24, 2009
NASCAR Dashboard and Other Carbon Fiber Components
SFI Spec 56.1 | Manufacturers
Effective Date: Feb. 26, 2014