Benefits of a Folding Prop
For the serious racer, Slipstream folding propellers use centrifugal force for optimal performance.
- With the engine on, the prop shaft turns, opening the blades.
- When the engine stops, centrifugal force disappears and water pressure folds the blades.
Gears keep blades synchronised for smooth folding at any shaft position — no need to crawl into the bilge when racing.
Large blade area delivers exceptional thrust.
Unique blade geometry ensures smooth, reliable opening, especially when shifting into reverse.
Available for:
- Shafts: 1” to 1½”
- Saildrives: 14”–20” diameter
This design delivers minimal drag compared to fixed or feathering propellers, with the added benefit of reduced risk of catching kelp or ropes.
Complete the prop enquiry form below to find the best fit for your boat to get you sailing faster.
Built to last with
Engineering Excellence
Developed from the combined expertise of established propeller companies: Seahawk, Austral, Martec and JBC Engineering.
- Fail-safe cushion hubs (saildrive models) with integrated safety stops.
- UHMWPE Side Thrust Plates prevent metal-to-metal wear.
- Replaceable Nibral bushes — easy press-out replacement, no oversizing or welding needed.
- Polyurethane Bump-Stop Pads reduce noise and wear when shifting into forward.
- All stainless steel construction for superior life.
- Major parts are cast from 316L low-carbon stainless steel - the same grade used in most prop shafts and sail drive parts - for durability and resistance to corrosion and electrolysis.
- Bronze blade buses are simple to replace.
- All wear components are user-serviceable.
- Self-service kits available for easy refurbishment.
- Five year warranty against material and manufacturing defects.
- Enhanced performance at a competitive price.
MADE IN AUSTRALIA, TRUSTED WORLDWIDE
Manufactured by JBC Yacht Engineering
- Prop diameters 15-20” (300mm-500mm)
- Prop shafts from ¾” - 2” (20mm-50mm)
To accurately size your propeller, please complete our enquiry form with your boat specs and we will be in touch with our recommendation.
Seahawk Slipstream Folding Propellers
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Slipstream S4 Two Blade Folding Propeller
Vendor:Seahawk PropellersRegular price From $2,913.00 AUDRegular priceUnit price / perSale price From $2,913.00 AUD -
Slipstream S5 Three Blade Folding Propeller
Vendor:Seahawk PropellersRegular price From $3,573.00 AUDRegular priceUnit price / perSale price From $3,573.00 AUD -
Slipstream S6 Two Blade Folding Propeller
Vendor:Seahawk PropellersRegular price From $3,242.00 AUDRegular priceUnit price / perSale price From $3,242.00 AUD -
Slipstream S7 Three Blade Folding Propeller
Vendor:Seahawk PropellersRegular price From $3,913.00 AUDRegular priceUnit price / perSale price From $3,913.00 AUD



