Universal Parts

The patented T2 Ratchamatic is Harken’s newest block to feature the T2 line’s styling and soft-attachment system. The weight of this high-strength block is only a few ounces. This is thanks to composite fiber-reinforced sideplates,...

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.

The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race. Sheave 16 mm / 5/8 in Length: 54 mm / 2 1/8...

A low-friction Harken 29mm Carbo AirBlocks from Harken. A lightweight, strong, reliable and affordable block. This variation comes with a removable bolt through the middle so it can be undone and connected to various locations on your boat...

Updated C420 spinnaker guy larger roller pin (1/4 inch) in our latest spec. The outboard end of the pin features a 1 inch disc that's better for holding your spin sheets as compared to our previous version. A great upgrade for any C420 sailor! Guy...

Grey gelcoat in 8oz container for your next boat repair.  Gelcoat comes waxed and ships without the catalyst (Fire hazard). For best results when mixing you should use 2% catalyst or 50:1. SHIPPING NOTE - Item cannot ship via USPS. Please select...

Yellow gelcoat in 4oz container for your next boat repair. This is the same gelcoat we use for our C420 with yellow stripes Gelcoat comes waxed and ships without the catalyst (Fire hazard). For best results when mixing you should use 2% catalyst or 50:1...

Grey gelcoat in 8oz container for your next boat repair. This is the same gelcoat we use for our C420 Deck and the entire Zim ILCA For our C420 hull, you need white C420 Gelcoat Gelcoat comes waxed and ships without the catalyst (Fire hazard). For best...

White gelcoat in 8oz container for your next boat repair. This is the same gelcoat we use for our C420 hull and most Zim Optis.  For our C420 deck, you need grey C420 Gelcoat Gelcoat comes waxed and ships without the catalyst (Fire hazard). For...

White gelcoat for the RS Aero sailbot in 8oz container for your next boat repair. Gelcoat comes waxed and ships without the catalyst (Fire hazard). For best results when mixing you should use 2% catalyst or 50:1. SHIPPING NOTE - Item cannot ship via...

White gelcoat in 8oz container for your next boat repair. This is the same gelcoat we use for our FJ/CFJ. Gelcoat comes waxed and ships without the catalyst (Fire hazard). For best results when mixing you should use 2% catalyst or 50:1. SHIPPING NOTE -...