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Aftermarket FIXED-position trim tab / ride plate extension

IJSBA · Hull and handling

Aftermarket FIXED-position trim tab / ride plate extension

IJSBA answers this part for 20 of its classes. 18 of those answers are permissions, with or without limits attached, and 2 are not.

Universal: max 100mm (3.94 in) rearward beyond the original planing surface, width may not exceed the planing surface, all edges radiused. Transom extensions count as trim tabs.

Where it stands, class by class

20 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 legal 1 class

Hull extensions and trim tabs may NOT be used in Ski Lites, though mounting brackets may remain. · SKL.2.7

The rules do not say 1 class

Not addressed. Treat as OEM only unless Stock Class provisions permit otherwise.

Legal, within limits 1 class

Replica plates only, trim motors must remain in place.

Legal, within limits 1 class

Replacement trim PLATES only, replica parts offering the same handling characteristics as stock. Material may differ from · OEM

Legal, within limits 1 class

Replica trim plates only.

Legal 1 class

Aftermarket FIXED-position trim tabs allowed. · SKM.2.7

Aftermarket FIXED-position trim tab / ride plate extension: 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 IJSBA class · where the rulebooks differ · signed checks on parts the shop sells.

Hull and handling · two and four stroke · legal outright in 18 of 20

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