IHRA · Hull and handling

Aftermarket hood, IHRA

IHRA answers this part for 29 of its classes. 7 of those answers permit the part outright and 1 permit it with stated conditions, leaving 21 that do not. 4 of the ones that do not are classes we read as open rather than as refusing it. 20 are inferred from how the class is written rather than quoted from a rule naming this part.

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.

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This is one body's answer, not the sport's. You are bound by whichever body sanctions the event you enter. If you race more than one series, build to the stricter answer. The differences are set out in the rulebook comparison.

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

Not legal

This comes off. The rules refuse it in this class.

Not permitted, not listed in the rules

Treat it as coming off. The class requires the craft to stay stock except where the rules allow otherwise, and this part is not on the list, so this is our reading rather than a rule we can quote at you.

Legal, with conditions

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

Legal

Keep it. The rules permit this part in this class.

No rule, this is an open class

Probably keep it. The class carries no stock clause at all, so anything unlisted appears to be open. The rulebook does not say so in terms, and this is our reading rather than a permission anybody wrote down.

Not legal 1 class

Aftermarket hoods are not allowed in Ski GP3. · M.2.3

• Ski GP3

Not permitted, not listed in the rules 16 classes

On a closed list an unlisted modification is not permitted. · A.2.2, J.1

• Runabout Endurance
• Runabout Lites
• Four-Stroke Ski Lites
• Runabout GP2
• Runabout GP3
• Ski GP2
• Ski Lites
• Drag, Sea-Doo vs Sea-Doo
• Drag, Yamaha Pro Stock
• Sport Spec
• Drag, Sea-Doo Pro Stock
• Drag, Yamaha Spec
• Ski Limited
• Drag, Sea-Doo Spec
• Drag, Super Stock
• Drag, Turbo No Nitrous

Legal, with conditions 1 class

Sea-Doo X4 type hulls: Aftermarket hoods permitted for Sea-Doo X4 type hulls ONLY. · BB.10.3

• Runabout Limited

Legal 2 classes

Aftermarket hoods are allowed, provided they comply with the rulebook safety and handling regulations.

• Ski 1100 Modified · R.6.2
• Ski 1500 Modified · Q.6.2

Legal 2 classes

Aftermarket hoods are allowed, with no shape or material limit stated.

• X2 Vintage · T.6.1
• Ski GP · K.8.2

Legal 2 classes

The hood may be modified or replaced with an aftermarket one, provided no hazard is created.

• Sport GP · V.9.2
• Runabout GP · X.7.3

Legal 1 class

Aftermarket hoods may be used, and the clause ties that to hull modifications without saying more. · S.6.1

• Ski Vintage

No rule, this is an open class 3 classes

The class states only what it bans and calls itself run what you brung, against a section DD preamble that says anything unlisted is illegal.

• Drag, 2 Stroke Unlimited · DD.12
• Drag, Stand Up Unlimited · DD.10
• Drag, Unlimited · DD.6

No rule, this is an open class 1 class

No restriction in section CC, and CC.1 permits any modification it does not restrict.

• Freestyle · CC

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Aftermarket hood: 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.

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