2019 IHRA Rulebook

50 IHRA SFI SPECIFICATIONS Following is a list of all Specifications applicable to IHRA Drag Racing, with respective expiration periods. An item with an expiration period must be returned to the original manufacturer for inspection and recertification at the end of this period before it can be permitted for further use at an IHRA event. Specifications are available from the SFI Foundation. Phone: 858.451.8868 Internet: www.sfifoundation.com SFI EXPIRATION SPEC. NO. DESCRIPTION EXPIRATION 1.1 ............Replacement Flywheels and Clutch Assemblies .........................2 Years 1.2 ............Multiple Disc Clutch Assemblies ...............................................2 Years 1.3 ............Nitro Methane Drag Race Multiple Disc Clutch Assemblies .........1 Year 1.4 ............Alcohol Drag Race Multiple Disc Clutch Assemblies ....................1 Year 1.5 ............Multiple Disc Clutch Assemblies for Supercharged, Nitrous Oxide-injected, and Turbocharged Vehicles ....................1 Year 2.1 .............Rear Engine Dragster Roll Cage - 6.29 and quicker ...................2 Years 2.2 .............Front Engine Dragster Roll Cage - 6.29 Seconds & Quicker .......2 Years 2.3 .............Rear Engine Dragster Roll Cage - Top Fuel Entries......................2 Years 2.4 .............Front Engine Dragster Roll Cage - 6.30 to 7.49 Seconds ...........2 Years 2.5 .............Rear Engine Dragster Roll Cage - 6.30 to 7.49 Seconds ............2 Years 2.6 .............Front Engine Dragster Roll Cage - 7.50 Seconds &Slower .........3 Years 2.7 .............Rear Engine Dragster Roll Cage - 7.50 Seconds & Slower .........3 Years 3.2 .............Fire Protection Material (Technical Bulletin) ...............................N/A 3.2A ...........Driver Suits/1,/3,/5 ...................................................................N/A 3.2A ...........Driver Suits/10,/15,/20, /25, /30...............................................5 Years 3.3 ............Driver Accessories ...................................................................N/A 4.1 ............Automatic Transmission Shields (rigid)........................................5 Years 4.1 ............Automatic Transmission Shields (flexible)....................................2 Years 6.1 ............Containment Bellhousing for SFI 1.1 & 1.2 two disc maximum Clutch Assemblies used only on naturally aspirated vehicles ......5 Years 6.2 ............Bellhousing for SFI 1.2, 1.3,1.4 &1.5 Clutch Assemblies ............2 Years 6.3 ............Bellhousing for SFI 1.2, 1.3 & 1.4 Clutch Assemblies ................2 Years 7.1 ............Lower Engine Containment Device ............................................1 Year 7.2 ............Lower Engine Containment Device ............................................5 Years 8.1 ............Remote Fuel System Drive Assembly ........................................N/A 9.1 ............Front Wheel Drive Vehicle Bellhousing Shields ...........................5 Years 10.1 ..........Funny Car Roll Cage ................................................................2 years 10.2 ..........Funny /Altered Car Roll Cage 6.00 to 7.49.................................2 years 10.3 ..........Funny /Altered Car Roll Cage 7.49 and slower ...........................3 years 10.4 ...........SIde Steer Roadster 7.49 and slower.........................................3 years 10.5 ..........Nitro Funny Car Roll Cage ........................................................2 year 14.1 ..........Supercharger Restraint Devices ................................................2 Years 14.2 ...........Alcohol Supercharger Restraint Devices ....................................2 Years 14.21 ........Screw-Type Supercharger Restraint Devices ..............................2 Years 14.3 ..........Nitro-Methane Fuel Supercharger Restraint Devices ..................2 Years 14.4 ..........Containment Valve Covers/Valve Cover Shields ..........................2 Years 15.1 ..........Drag Race Drive Wheels ...........................................................N/A 15.2 ..........Drag Race Front Wheels ...........................................................N/A 15.3 ..........Drag Race Drive Wheels ...........................................................N/A 15.4 ..........Drag Race Drive Wheels ...........................................................N/A 16.1 ..........Driver Restraint Assemblies ......................................................2 Years 16.5 ..........Driver Restraint Assemblies ......................................................2 Years 17.1 ..........On Board Fire Extinguishing Systems ........................................N/A 18.1 ..........Crankshaft Hub Harmonic Dampers ..........................................N/A 21.1 ..........Power Turbine Containment Device ...........................................2 Years 23.1 ..........Supercharger Pressure Relief Assemblies ..................................2 Years 24.1 ..........Youth Helmets .........................................................................N/A 25.1 ...........Full Bodied Car, Tube Chassis Roll Cage - 7.49 Seconds and Quicker; 2,800 Lbs. Maximum ...........................................2 Years 25.2 ..........Full Bodied Car, Tube Chassis Roll Cage - 7.49 Seconds and Quicker; 3,200Lbs. Maximum ............................................2 Years 25.3 ...........Full BodiedCar, Tube Chassis Roll Cage - 6.50 Seconds and Slower; 3,600 Lbs. Maximum .............................................2 years