One Design Parts

*ZIRCON EDITION* Custom Spliced 8:1 Cunningham w/ Technora Control Line for ILCA Our best selling ILCA cunningham system, now with Harken Zircon blocks! Upgrade your ILCA cunningham control to the latest 8:1 purchase system with this complete set up from...

* ZIRCON EDITION* Custom Spliced Laser/ILCA 6:1 Outhaul Assembly w/ Technora Control Line & Harken Zircon Blocks Our best selling ILCA outhaul system, now with Harken Zircon Blocks! Upgrade your ILCA / Laser outhaul to the latest 6:1 purchase system...

ILCA mainsheet line precut and ready to sail using 6mm Robline Mainlite. Ideal for the ILCA mainsheet application, this sheet does not kink and is lightweight thanks to a XLF core (Polypropylene) and 24 plait polyester cover. 6mm Diameter Yellow w/...

C420 mainsheet line precut and ready to sail using 6mm Robline Mainlite. Ideal for the C420 mainsheet application, this sheet does not kink and is lightweight thanks to a XLF core (Polypropylene) and 24 plait polyester cover. 6mm Diameter Yellow w/...

Opti mainsheet line precut and ready to sail using 6mm Robline Mainlite. Ideal for the Optimist mainsheet application, this sheet does not kink and is lightweight thanks to a XLF core (Polypropylene) and 24 plait polyester cover. 6mm...

ILCA mainsheet line precut and ready to sail using 6mm Robline Mainlite. Ideal for the ILCA mainsheet application, this sheet does not kink and is lightweight thanks to a XLF core (Polypropylene) and 24 plait polyester cover. 7mm Diameter Black w/...

C420 mainsheet line precut and ready to sail using 6mm Robline Mainlite. Ideal for the C420 mainsheet application, this sheet does not kink and is lightweight thanks to a XLF core (Polypropylene) and 24 plait polyester cover. 7mm Diameter Black w/...

Opti mainsheet line precut and ready to sail using 6mm Robline Mainlite. Ideal for the Optimist mainsheet application, this sheet does not kink and is lightweight thanks to a XLF core (Polypropylene) and 24 plait polyester cover. 7mm Diameter Black...

The Latest Harken ILCA Vang MK2 + Zircon Twiddle + 25mm Fly Block, Fully Spliced & Ready to Sail The new Harken ILCA MK2 Vang Lower Unit is a unique design that improves on the legacy Harken vang lower unit that has been loved by ILCA sailors since...

Upgrade your ISCA Sailboat sail ties with easy to use soft shackles. These dyneema loops provide a perfect fit and are easy to install and remove, eliminating the need to get exact knots every time. Includes 32 soft shackle sail ties.  32 piece...

All-Stainless Quick Adjust Lever for the ISCA sailboat from Zim Sailing. Say goodbye to rusty and corroded quick adjust levers with this all-stainless lever and knob! Handle, swivel, pin, and knob are all made of corrosion-resistant 316-stainless...

Brand new class-legal Hyde ILCA6 sail with minor visual imperfections. Sails are unused, and ready to be used to race. Includes sail bag and telltales. Cloth has translucent white lines in some locations, very similar to the appearance of a sail...