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Harken 57/75 mm Flip-Flop BlocksHarken
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HAR2142 - Harken 57 mm Small Boat Flip Flop Block
Code: HAR2142
Original Price: $173.90
Price: $137.80
HAR2143 - Harken 57 mm Small Boat Flip Flop Block w/ Cam Cleat
Code: HAR2143
Original Price: $257.65
Price: $204.10
HAR2144 - Harken 57 mm Ratchamatic Flip-Flop Block
Code: HAR2144
Original Price: $212.60
Price: $168.40
HAR2145 - Harken 57 mm Ratchamatic Flip-Flop Block w/ 150 Cam-Matic
Code: HAR2145
Original Price: $296.25
Price: $234.70
HAR2678 - Harken 75 mm Flip-Flop Block
Code: HAR2678
Original Price: $215.10
Price: $170.40
HAR2679 - Harken 75 mm Flip-Flop Block w/ Cam
Code: HAR2679
Original Price: $328.55
Price: $260.30
HAR2688 - Harken 75 mm Ratchamatic Flip-Flop Block
Code: HAR2688
Original Price: $266.65
Price: $211.20
HAR2689 - Harken 75 mm Ratchamatic Flip-Flop Block w/ Cam
Code: HAR2689
Original Price: $380.00
Price: $301.00
 


Harken 57 mm and 75 mm Flip-Flop Blocks pivot around the line axis to keep line close to the deck. Hinged construction allows for various lead angles.

Lightweight, machined 6061-T6 aluminum cheeks pivot on fiber-reinforced plastic chocks. The sheave runs exclusively on a ball bearing system for fast trim and release under any load. Ball bearings, sheave, and sideplates are UV-stabilized with carbon black for maximum protection.

The Ratchamatic versions roll freely in both directions under low loads and automatically engage a ratchet mechanism as loads increase, giving sailors a holding power of up to 15:1. The ratchet engagement can be adjusted to a higher or lower load depending on the sailor's strength, sailing style and system usage.

Reversible cam arms adjust and lock in a wide range of positions for crew accessibility and to accommodation of changing lead angles.

Harken 57/75 mm Flip-Flop Blocks


We at Layline strive to be your source for Harken 57/75 mm Flip-Flop Blocks and all sailboat hardware, rigging, and sailing gear. With our focus on one design and handicap racing we can offer advice and reviews of what you need to compete. If you need any assistance selecting the appropriate Harken 57/75 mm Flip-Flop Blocks please contact us. Our crew is ready to help!
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