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Built to win.

Thundercat race catamarans, designed and tuned for the course you run.

The fleet

Race catamarans.

Flat-water nose cone

Low-drag profile tuned for smooth courses and maximum top-end speed.

Rough-water nose cone

Higher volume bow that stays planted and predictable through chop and wake.

Race prep & rigging

Full rigging, livery and pre-event prep so you launch ready to race.

Design & R&D

Two nose cones. Two conditions.

Course conditions change everything. So we built two race boats — the Riot for freshwater racing on rivers, dams and lagoons, and the Rampage for rough water and the coast — both designed to UIM P750 tunnel-hull spec and built the traditional way: foam plug, then hand-laid GRP or carbon.

Design A · Flat Water Sprint

The Riot

Built for freshwater racing — excelling on rivers, dams and lagoons. A long, fine entry that slices clean water for maximum speed, refined through proven real-world research and development.

WATERLINE 8mm tip 8° entry 700mm length 15mm rocker
Length700 mm
Entry angle
Deadrise18°
ChineHard
Rocker15 mm
Tip8 mm sharp
Best forRivers · dams · lagoons
Design B · Rough Water / Coastal

The Rampage

Our coastal boat runs a slightly taller tunnel and our proprietary Highjacker layout — getting you up quicker for the hole shot you want, and back up to speed as fast as possible after taking flight over waves and swells.

WATERLINE 22mm tip 14° entry 580mm length +40mm rocker
Length580 mm
Entry angle14°
Deadrise14°
ChineSoft / flared
Rocker+40 mm
Tip22 mm blunt
TunnelTaller profile
LayoutHighjacker
Best forCoastal · rough water
Built to the rulebook. Both designs conform to UIM P750 tunnel-hull constraints — 520mm tube diameter, 2030mm max beam and 972mm tunnel width — with a nose-cone tow point rated to 300 kg and a clear sponsor decal area on the GRP bow. Each starts life as a shaped foam plug before layup.
Chaotic Riot in S666 race livery
Proven on the water

The Riot — race number S666.

Our flat-water flagship in full Chaotic livery — the result of rulebook analysis, competitive research and a lot of laps. Built around our own nose-cone tooling and hand-laid construction.

Custom hull and strake layout
Foam-plug tooling, hand-laid GRP
Outboard repower and rigging
Build yours
Performance parts partner
4RR 4 Real RacingPerformance Parts

Race-proven hardware.

Chaotic Racing & Inflatables is proud to carry the entire 4 Real Racing inventory — billet performance parts and rigging designed by Nikki Du Bois through years of research and development. Race-proven and incredibly durable, every part is real-world tested through the toughest conditions, for Tohatsu, Yamaha and more.

4RR transom motor mount through-bolts — red anodised billet
Transom motor mount through-boltsRed anodised billet aluminium, 4RR-engravedPOA
4RR Tohatsu tiller extension arm — red anodised billet
Tohatsu tiller extension armLightweight skeletonised billet, stainless hardwarePOA
4RR Tohatsu steering damper bracket — polished stainless
Tohatsu steering damper bracketPolished stainless steel mounting platePOA
4RR quick-release cowling bobbins with carbon strap
Quick-release cowling bobbinsAnodised bobbins with carbon-fibre pull strapPOA
4RR jack plate shims
Jack plate shimsSlotted shims to fine-tune motor height & setbackPOA
4RR 18 chopper through-hub conversion
18 chopper through-hub conversionThrough-hub exhaust conversion for chopper propsPOA
4RR polyurethane propeller bushes
Polyurethane propeller bushesTough poly bushes with brass inner sleevesPOA
4RR Tohatsu and Yamaha gaskets
Tohatsu & Yamaha gasketsPrecision replacement gaskets, race-gradePOA
4RR adjustable jack plate — red anodised billet
Jack plateAdjustable billet jack plate for height & setbackPOA
4RR top and bottom cam set for Tohatsu
Top & bottom cam set — TohatsuBillet throttle cam arms with push-pull linkagesPOA
Stocked & supplied by Chaotic. We carry the full 4RR range in-house — fitted to your rig or supplied over the counter. All parts POA; chat to us for your setup.
Enquire about 4RR parts