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Class Legality

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Legality by part

Start from the part rather than the class. Every entry below opens a page showing where that part stands across every class the body runs, with the rule section named against each answer.

1312 of 4170 answers are our reading, not a quoted rule. Those are the cases where a class publishes a closed list and the part is not on it, or publishes no stock clause at all. Each row below prints its own count, so you can see before clicking whether a part is well covered or mostly inferred.

IJSBA

61 parts across 20 classes. Browse by class instead.

Electrical

Part Classes answering Of those, our reading
Aftermarket spark plugs of a different heat range 20 None, all quoted
Replacement battery 20 None, all quoted
Replacement starter motor and bendix 20 None, all quoted

Hull and handling

Part Classes answering Of those, our reading
Aftermarket bilge draining system 20 None, all quoted
Aftermarket FIXED-position trim tab / ride plate extension 20 None, all quoted
Aftermarket handlebars, throttle, throttle cable, grips, switches 20 None, all quoted
Aftermarket handlepole / pole bracket 12 3 of 12
Aftermarket hood / engine cover 20 1 of 20
Aftermarket hull or top deck 20 8 of 20
Aftermarket seat assembly / seat base 11 None, all quoted
Aftermarket sponsons 20 None, all quoted
Aftermarket steering shaft, shaft holder, handlebar holder, steering cables 20 None, all quoted
Ballast weight kits 20 None, all quoted
Footholds, tray mats, padding kits 20 None, all quoted
Hull extension 20 7 of 20
Modification of the OEM hull 20 1 of 20
Replacement bumpers and water-spray deflectors 20 None, all quoted
Rider-controlled or automatic trim tab system 20 8 of 20

Ignition

Part Classes answering Of those, our reading
Aftermarket CDI / ignition box (2-stroke) 12 None, all quoted
Aftermarket or lightened flywheel 20 13 of 20
Aftermarket standalone ECU 14 None, all quoted
ECU reflash / reprogramming of the OEM unit 14 None, all quoted

UIM

72 parts across 24 classes. Browse by class instead.

Cooling

Part Classes answering Of those, our reading
Aftermarket cooling lines, bypass systems and fittings 16 5 of 16
Aftermarket thermostat, pressure regulator, cooling solenoid 16 None, all quoted
Engine flush / rinse kit 16 None, all quoted

Electrical

Part Classes answering Of those, our reading
Aftermarket spark plugs of a different heat rating 16 None, all quoted
Aftermarket switches and switch housings 16 5 of 16
Replacement battery 16 None, all quoted
Replacement starter motor and bendix 16 14 of 16

Forced induction

Part Classes answering Of those, our reading
Aftermarket intercooler 13 5 of 13
Aftermarket turbocharger or supercharger 13 None, all quoted
Boost relief / overboost control valve 13 None, all quoted
Supercharger internals, clutch and pulleys 13 9 of 13

Fuel

Part Classes answering Of those, our reading
Aftermarket crankcase vent catch-can / blow-by oil system 13 5 of 13
Aftermarket electric fuel pump 16 14 of 16
Aftermarket flame arrester / air filter 16 5 of 16
Aftermarket fuel filler cap 16 10 of 16
Aftermarket fuel injection system 11 5 of 11
Aftermarket intake manifold 16 14 of 16
Aftermarket or modified carburettor 11 5 of 11
Aftermarket or modified rotary valve 11 9 of 11
Aftermarket or modified throttle body 13 13 of 13
Aftermarket reed valve assembly 11 9 of 11
Aftermarket vapour / air separator 11 9 of 11
Carb jet kit, needle valve, needle valve spring 11 5 of 11
Ducting between flame arrester and throttle body / compressor 16 5 of 16
Long-distance fuel filling system (stopper and tank connection) 16 12 of 16
Replacement or aftermarket fuel tank 16 5 of 16

IHRA

81 parts across 29 classes. Browse by class instead.

Cooling

Part Classes answering Of those, our reading
Aftermarket bilge draining system 29 None, all quoted
Aftermarket cooling lines and fittings 29 4 of 29

Driveline

Part Classes answering Of those, our reading
Adjustable or rider-controlled trim tabs 29 20 of 29
Aftermarket driveshaft and couplers 29 11 of 29
Aftermarket impeller 29 None, all quoted
Aftermarket intake grate 29 None, all quoted
Aftermarket or bored pump nozzle 29 17 of 29
Aftermarket pump housing and stator vanes 29 13 of 29
Aftermarket ride plate 29 None, all quoted
Replacement trim plates 29 None, all quoted
Replacement wear ring 29 None, all quoted
Reverse bucket or brake removal 18 None, all quoted
Titanium driveshaft 29 27 of 29

Electrical

Part Classes answering Of those, our reading
Aftermarket gauges and data logging 29 None, all quoted
Aftermarket or relocated battery 29 None, all quoted
Aftermarket wiring harness or connectors 29 4 of 29
Replacement starter motor 29 None, all quoted
Spark plugs, wiring, hoses and clamps 29 None, all quoted

Forced induction

Part Classes answering Of those, our reading
Aftermarket intercooler 24 12 of 24
Aftermarket supercharger 24 10 of 24
Aftermarket turbocharger 24 12 of 24
Nitrous oxide system 29 20 of 29
Supercharger internals, clutch and pulleys 24 10 of 24

Hull and handling

Part Classes answering Of those, our reading
Aftermarket bulkhead 29 26 of 29
Aftermarket handle pole 17 1 of 17
Aftermarket hood 29 20 of 29
Aftermarket hull 29 13 of 29
Aftermarket or modified top deck 29 19 of 29
Aftermarket seat 18 5 of 18
Aftermarket seat cover 18 4 of 18
Aftermarket sponsons 29 None, all quoted
Ballast weight 29 None, all quoted
Flotation foam removal 29 21 of 29
Footholds, foot straps and tray mats 15 1 of 15
Handlebars, grips and controls 29 None, all quoted
Hull extension 29 19 of 29
Modification of the OEM hull 29 3 of 29
Replacement bumpers and side rails 29 None, all quoted
Steering shaft, holder and cables 29 None, all quoted
Ventilation tubes and vent sealing 29 12 of 29

Back to class legality · Where the rulebooks disagree

214 parts · 4170 answers · 1312 inferred

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BaddJet Class Legality