ISCA Spar Parts

Low-friction Carbo AirBlocks® are lightweight, strong, reliable—and affordable. These small, compact blocks have very high working loads for safe, easy trimming. Zim Applications C420/CFJ: spin sheet block, outhaul block on boom ISCA Race Boom...

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. Zim Applications ISCA Race...

Interlocking eyebolts with nuts for the ISCA boom assembly. These eyebolts connect the forward end of the lower boom and the lower end of the upper boom. Includes lock nuts.  Interlocking Eyebolts Includes Nuts Zim Sailing Part # 41006 This is an...

Snap hook for the ISCA mainsheet.  Chrome material  Snap Hook Zim Sailing Part # 48111   This is an official International Sunfish Class Association™ (ISCA®) class approved fitting. Zim Sailing is the exclusive manufacturer and...

Replacement boom block with swivel for ISCA sailboat booms. This is the standard Race Lite version. ISCA Boom Block w/ Swivel Zim Sailing Part # 48160   This is an official International Sunfish Class Association™ (ISCA®) class approved...

Replacement boom block for ISCA sailboat booms. This is the standard Race Lite version that is fixed (ie, does not swivel). ISCA Boom Block (Fixed) Zim Sailing Part # 48159   This is an official International Sunfish Class Association™...

Replacement Gooseneck Assembly for ISCA sailboats. The gooseneck provides attachment between the ISCA mast and the ISCA lower boom. Add a quick adjust lever (not included) for easy on the water adjustments to your rig or use a standard nut and bolt (sold...

Replacement upper or top mast cap for the ISCA sailboat. This plastic fitting includes a hole for the halyard to pass through. Cap is typically mounted to the mast with a rivet or pin.  Upper / Top Mast Cap Plastic Fitting Zim Sailing Part #...

Replacement lower mast cap for the ISCA sailboat. This is the plastic fitting mounted to the bottom of the ISCA mast to help prevent wear in the mast step. This is a plastic fitting and standard on all new Zim Sailing ISCA masts. Lower / Bottom Mast...

Replacement ISCA sailboat boom end cap without eye. This cap is mounted to the forward end of the boom. Plastic Fitting Zim Sailing Part # 48155 This is an official International Sunfish Class Association™ (ISCA®) class approved fitting. Zim...

Replacement boom end cap for the ISCA sailboat. This 'Double Eye' version is used at the aft end of the lower boom to accommodate the outhaul rigging.  End Cap w/ Double Eye Durable Plastic Construction Zim Sailing Part # 48154 This is an official...

Replacement ISCA sailboat boom end cap with single eye. This cap is mounted to the aft end of the upper boom. Plastic Fitting Zim Sailing Part # 48153 This is an official International Sunfish Class Association™ (ISCA®) class approved fitting...