Free Shipping on all US orders!

Harken 57mm Ratchamatic Flip-Flop Block

More Views

Harken 57mm Ratchamatic Flip-Flop Block
SKU #: HK_HAR2144

Regular Price: $212.60

Special Price $186.99

Availability: In stock

Harken small boat 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. 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 Harken Ratchamatic version rolls freely in both directions under low loads and automatically engages 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. 




  Imperial Metric
Sheave Diameter 2 1/4 in 57 mm
Max Line Diameter 3/8 in 10 mm
Max Working Load 500 lb 227 kg
Breaking Load 1,000 lb 454 kg
Weight 5.5 oz 156 g
Length 4 5/16 in 110 mm
Width 2 in 50 mm
Height 2 5/8 in 67 mm
Additional Information

Additional Information

Brand Harken
Gender No
Location No
Activity No
Material No
Max Working Load 500lb / 227kg
Max Line Diam 10 mm (3/8")
Length No