Titanium driveshaft, IHRA

One class permits it by name, one prohibits it by name, and the other twenty-seven never mention it.

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.

S.5.1 names the titanium driveshaft, impeller housing and stator vane assembly and nothing else. It does not lift the J.7 ban on titanium fasteners.

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: 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

Titanium driveshafts are prohibited by name, where Ski Vintage permits them. The rulebook states both and reconciles neither. · U.5.2

Sport Spec

Not permitted, not listed in the rules 23 classes

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

Legal 1 class

Titanium driveshafts are allowed in this class, as are titanium impeller housings and stator vane assemblies. Nothing else in titanium is, and the J.7 fastener ban still stands. · S.5.1, S.5.2

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.

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

Titanium driveshaft: 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 1 of 29 answered