Harken Carbo Ratchamatic Blocks

Harken Carbo Ratchamatic Blocks
The Carbo Ratchmatic is a load-sensing ratchet block that rolls freely in both directions under low loads, and automatically engages the ratchet as loads increase. Shifting between ratchet and light air modes is seamless. Unloaded main and jib sheets run out freely during mark roundings and asymmetrical spinnakers free instantly during jibes.

Ratchet engagement may be adjusted to a higher or lower load according to strength and sailing style. The Ratchamatic cheek block mounts on either port or starboard. Holding power of 57 mm is as high as 10:1. The 75 mm up to 15:1.

For the ultimate system, mount a Ratchamatic on the boom above a cockpit-mounted switchable ratchet to allow the mainsheet to run freely in light air, and ensure double holding power in heavy air.

Use the 2634 with a 402 or 403 swivel arm for a versatile two speed mainsheet system.

Use for:


  • Main/Jib Sheets Asymmetric spinnakers

  • Harken Power3 Ratchet BlocksHarken 57mm Single Carbo Ratchamatic Block
    Regular price: $105.80
    Sale Price : $83.69
    Harken 57mm Single Carbo Ratchamatic Block w/ Becket
    Regular price: $111.35
    Sale Price : $88.19
    Harken 57mm Single Carbo Ratchamatic Block w/ Cam Cleat
    Regular price: $194.95
    Sale Price : $154.79
    Harken 57mm Single Carbo Ratchamatic Block w/ Cam Cleat & Becket
    Regular price: $200.50
    Sale Price : $159.29
    Harken 57mm Triple Carbo Ratchamatic Block w/ Cam Cleat
    Regular price: $302.25
    Sale Price : $239.39
    Harken 57mm Triple Carbo Ratchamatic w/ Cam Cleat & Becket
    Regular price: $307.80
    Sale Price : $243.89
    Harken 57mm Triple Carbo Ratchamatic Block w/ Cam Cleat & 40mm Block
    Regular price: $365.70
    Sale Price : $289.79
    Harken 57mm Carbo Ratchamatic Cheek Block
    Regular price: $108.60
    Sale Price : $86.39
    Harken 57mm Double Carbo Ratchamatic Block
    Regular price: $283.00
    Sale Price : $224.09
    Harken 75mm Single Carbo Ratchamatic Block
    Regular price: $148.10
    Sale Price : $117.89
    Harken 75mm Single Carbo Ratchamatic Block w/ Becket
    Regular price: $160.80
    Sale Price : $127.79
    Harken 75mm Carbo Ratchamatic Cheek Block
    Regular price: $149.25
    Sale Price : $118.79
    Harken 75mm Single Carbo Ratchamatic Block w/ Cam Cleat
    Regular price: $277.30
    Sale Price : $219.59
    Harken 75mm Single Carbo Ratchamatic Block w/ Cam Cleat & Becket
    Regular price: $289.95
    Sale Price : $229.49
    Harken 75mm Triple Carbo Ratchamatic Block w/ Cam Cleat
    Regular price: $427.70
    Sale Price : $339.29
    Harken 75mm Triple Carbo Ratchamatic Block w/ Cam Cleat & Becket
    Regular price: $440.40
    Sale Price : $349.19
    Harken 75mm Triple Carbo Ratchamatic Block w/ Cam Cleat, Block & Becket
    Regular price: $497.00
    Sale Price : $394.19