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Class Legality

IHRA · Driveline

Aftermarket intake grate, IHRA

IHRA answers this part for 29 of its classes. 0 of those answers permit the part outright and 29 permit it with stated conditions, leaving 0 that do not.

This page is IHRA only, and the bodies do not agree. The same part under IJSBA and UIM. Which one applies to you is decided by whoever sanctions the race you enter.


Where it stands, class by class

29 classes, grouped where the same rule gives the same answer rather than listed one by one, because an answer that holds for a class usually holds for every class that borrows its rules.

What each answer below means

Legal, with conditions
Keep it, but measure it: the rules permit this part only inside stated limits.

Legal, with conditions 27 classes

Aftermarket or modified, full-length type with at least one bar parallel to the driveshaft, dropping no more than 12.00mm (0.47 in) below the flat plane of the pump intake.

Legal, with conditions 1 class

FX intake grates must use the OEM mounting bolt location and bolt pattern. · DD.1

Legal, with conditions 1 class

Required. Full-length with a bar parallel to the driveshaft, or horizontally mounted blocking at least 40% of the intake area. Leading edges radiused. Limits: max below pump intake plane 12 mm, alt min blocked area 40 per cent. · CC.4.3


Aftermarket intake grate: if the rule your class applies reads differently to you, or the rulebook has changed since this was read, ask. We answer with the section we read it from, or that we have not read it. Ask a rules question.

Every IHRA class · where the rulebooks differ · checks on parts the shop sells · how this site reads a rulebook.

Driveline · two and four stroke · legal in 29 of 29 answered, all with conditions

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