Harken 57mm Carbo Ratchet Block - 2135

FREE UK SHIPPING* - excludes masts, booms, trailers, trolleys and boats
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  • 57mm Harken Carbo Ratchet Block with Swivel - 2135

    57mm Harken Carbo Ratchet blocks allow you to hold your ropes in your hand and offer balance between holding power and controlled easing.

    This 57mm ratchet block has an on/off switch so the ratchet can quickly be turned off when not needed. It also swivels so the block goes in the direction the rope is coming from.

    This ratchet pulley is one of the most popular Harken sell and can be found on a wide range of sailing dinghies from the Laser through to boats in the RS range.


    • Sheave Ø - 57mm
    • Maximum line Ø - 10mm
    • Maximum working load - 227kg
    • Length - 103mm
    • Weight - 85g
    • Shackle pin Ø - 5mm
    • Breaking load - 907kg
    • Holding power - 10:1
  • Delivery and Costs

    We try to treat delivery as a pass through cost and keep the cost to you as low as possible, on top of our already competitive product prices.

    We offer free UK standard delivery for orders over £50, this does exclude boats, trolleys, masts, booms and large items which can't be sent via standard mail.

    Any order placed by midday will leave us the same day unless there is a lead time which we detail on the product page.

    Delivery Costs

    UK 2nd Class Small Packet - £3.99

    UK 1st Class Small Packet - £4.50

    UK 1st Class Small Packet - Over 1KG - £5.99

    DPD Next Day Courier - £8.99

    Courier - Long Items - Masts, Booms Etc - £40

    Close to England - £10

    We are not currently shipping further afield due to customs charges and the cost of shipping, this will be reviewed soon.

  • Frequenty Asked Questions

    What is the quantity for ropes?

    The quantity is meters. If you order 5 items you will receive one 5 meter continuous length of that specific rope.

    How do I claim my first order discount?

    Simply sign up to our newsletter and we'll send your unique first order discount code.

    Do you ship to other locations?

    We are always happy to provide you with a quote for shipping, simply drop us an email to with the items you are planning on ordering and your address.

    Who are Sailing Chandlery?

    We're a team of sailors who are passionate about keeping you sailing and providing an excellent service first time. Find out more.

    I have another question?

    You can call the team on 07793 953564 or email us

Customer Reviews

Based on 2 reviews
Excellent quality as expected

I'm relatively new to sailing and this is the first time I've had to buy a new ratchet block. I went for this one as the mainsheet block on my single-hander dinghy, instead of a like-for-like replacement for my existing that broke, as it seems to be very well regarded / a popular choice. It appears to be of a very high build quality and i'm sure will last, given Harken's brand reputation. I've only been out on my boat a few times since fitting, but works as expected. If i were to find any negative it'd be to suggest Harken find a way to dampen/quieten the click noise when the ratchet is switched on, as it's quite loud - not that it really matters of course though! Sailing Chandlery have provided a good quality, straightforward service and with the introductory discount this was the best price i could find.

Ian Dibdin
4 times wind speed !

I race land yachts and when you have 60mph winds going over your sail the stresses are immense.I have used harken blocks and especially their ratchet blocks for over 50 years and they have been brilliant. The 57 mm carbo block is ideal for what I need and will stand up to stress for many years. Sailing Chandlery provide a good friendly service an quick delivery times this is important when I am racing.