2019 IHRA Rulebook

IHRA 51 25.4 ..........Full Bodied Car Tube Chassis Roll Cage - 7.50 to 8.49 Seconds; 3,600 Maximum ......................................................................3 Years 25.5 ..........Full Bodied Car Stock or Modified/OEM Floorpan and Firewall with OEM Frame or Uni-Body Construction - 7.50 to 8.49 Seconds; 3,600 Lbs. Maximum ........................................3 Years 27.1 ..........Window Nets (Mesh)................................................................2 Years 27.1 ..........Window Nets (Ribbon)..............................................................NA 28.1 ..........Fuel Cells ................................................................................N/A 29.1 ..........Automatic Transmission Flexplates ............................................3 Years 30.1 ...........Automatic Transmission Flexplate Shields ..................................5 Years 31.1 ..........Flame Resistant Open Face Motorsport Helmets (SA) .................N/A 31.2 ..........Flame Resistant Closed Face Motorsport Helmets (SA) ...............N/A 34.1 ..........Screw-Type Superchargers .......................................................3 Years 37.1 ..........Roll Cage Nets .........................................................................N/A 38.1 ..........Head and Neck Restraint System ..............................................N/A 40.1 ..........Abrasion Resistant Driver/Rider Suites .......................................N/A 41.1 ..........Open Face Motorsport Helmets SN (M Rating)............................N/A 41.2 ..........Closed Face Motorsport Helmets SN (M Rating)..........................N/A 42.1 ..........Steering Wheel Quick Disconnect/Release..................................N/A 43.1 ..........Driveshaft.................................................................................N/A 45.1 ..........Roll Cage Padding ...................................................................N/A 46.1 ..........Nitro-Methane Fuel Motorcycle Engine Restraint Device..............N/A 49.1 ...........Top Fuel Rear Wing Assembly...................................................1 Year 49.2 ...........Top Fuel Front Wing Assembly..................................................1 Year