Archive for the Specifications Category

SFI Nitro Chassis Specs Revised

The SFI Chassis Specs for Top Fuel Dragsters and Nitro Funny Cars have been revised, effective October 31, 2013. The revised versions are designated as SFI Spec 2.3P for Top Fuel and SFI Spec 10.5A for Nitro Funny Car, and they are available from SFI for immediate use by

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Spec Revision – SFI 39.1 for Stock-Car Type Racing Seats (Custom)

The SFI Spec 39.1 for Stock-Car Type Racing Seats (Custom) has been revised to include a vent hole option in the test procedure. If a seat manufacturer offers various vent hole configurations, an area is specified where the manufacturer may place ventilation holes without having to retest

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March, 2013

March 28, 2013 – Several SFI Specifications have recently been revised. A quick summary of what changed in each spec is below. The complete specs may be viewed and downloaded on our Spec List page: SFI Specification List. SFI 3.2A Driver Suits: Changed Definitions to clarify that embroidered

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