OEM part required 6 classes
Must remain OEM.
- Four-Stroke Ski Lites · N.3.2
- Ski GP2 · L.3.2
- Ski Lites · O.3.2
- Drag, Yamaha Pro Stock · DD.1
- Drag, Sea-Doo Pro Stock · DD.2
- Drag, Yamaha Spec · DD.3
IHRA · Fuel
Aftermarket or substituted fuel tank
IHRA answers this part for 29 of its classes. 8 of those answers are permissions, with or without limits attached, and 21 are not. 11 are inferred from how the class is written rather than quoted from a rule naming this part.
Where it stands, class by class
29 classes, grouped by the answer rather than listed one by one, because an answer that holds for a class usually holds for every class that borrows its rules.
Not permitted, not listed in the rules Our reading, not a rule we can quote at you. This class requires the craft to stay stock except where the rules allow otherwise, and this part is not on the list.
No rule, this is an open class Our reading, not a rule we can quote at you. This class carries no stock clause at all, so anything unlisted appears to be open. The rulebook does not say so in terms.
OEM part required 2 classes
Must remain OEM. CONTRADICTION IN SOURCE - the same rule first permits aftermarket tanks then requires OEM. Treated as OEM only. See KB section 9.
- Ski 1100 Modified · R.3.3
- Ski 1500 Modified · Q.3.3
OEM part required 1 class
Two-stroke entries: Original tank, pickup, filler, filter, tap assembly, relief valve unmodified. The petcock may be bypassed. · Z.5.2
OEM part required 1 class
OEM tank and filler assembly unchanged. Filter and petcock may be aftermarket. · BB.4.4
Not permitted, not listed in the rules 8 classes
On a closed list an unlisted modification is not permitted. · A.2.2, J.1
Legal, within limits 1 class
Smaller OEM tanks allowed, e.g. a Spark tank in an RXP-X. · DD.4
Legal, within limits 1 class
Replacement tanks must come from another PWC. Fully aftermarket only with Race Director approval. · T.3.3
Legal, within limits 1 class
Fuel fillers must come from another OEM watercraft. · S.3.3
Legal, within limits 1 class
NOT restricted to a homologated watercraft. Must meet or exceed original strength and safety standards. Securely fastened. Filler may be relocated, including internally. · CC.3.4
Legal, within limits 1 class
Must be an unmodified tank from another watercraft. Non-OEM tanks only with Technical Director approval meeting OEM strength and safety. · K.4.2
Legal, within limits 1 class
Two-stroke: components must be unmodified and from another PWC; fully aftermarket allowed if meeting/exceeding OEM strength and safety. Original filler and relief valve must be used unmodified. Vapor/air separators max 2 in x 6 in with an always-open return line. ADDITIONAL FUEL RESERVOIRS PROHIBITED. Four-stroke (V.5.4): tank must be an unmodified OEM PWC part. · V.3.3
Legal, within limits 1 class
Must be OE; replacements may come from another PWC if unmodified. Fully aftermarket only with Race Director or Technical Director approval. Filler and relief valve must remain OE unaltered. · X.3.4
Legal 1 class
Aftermarket permitted. · U.3.3
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
Aftermarket or substituted fuel tank: 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 · signed checks on parts the shop sells.
Fuel · two and four stroke · legal outright in 8 of 29