Ronstan Shock Blocks - Viking Marine
Ronstan Shock Blocks - Viking Marine
Ronstan Shock Blocks - Viking Marine
Ronstan Shock Blocks - Viking Marine

Ronstan Shock Blocks

Regular price €17.95
Tax included.


Some small line rigging applications do not require ball bearing blocks, so Ronstan has introduced its Shocks™ Sheaveless compact blocks. Designed to fit a wide array of small diameter rigging uses, the new Shocks™ are claimed to be perfect for moderate load uses where minimal purchase is required.

The compact Shocks™ are carefully engineered to work well even if the load alignment is not straight. Made from anodized aluminium they weigh only 2.5g (0.01 oz.), yet can carry up to 350kg of break-load force. The Shocks™ soft attachment compatibility make them suitable for use in numerous high performance dinghy and small sailboat rigging applications including tweakers, vangs, trapezes, cunninghams, barber haulers and kite bridles. They are also handy on larger boats for uses such as ladder and motor hoists, lazy jacks, sail covers, and tie-downs.

Shocks come in two sizes and accepts 1.4mm to 10mm (1/16" - 3/8") line diameters for running rigging and can be used with up to 10mm (3/8") webbing attachments. They are available in three colour choices to help keep complicated rigging configurations more organised.

Unlimited uses, including kitesurfing, paragliders, sports kites, power kites, stunt kites, depower kites, traction kites, for deflection or purchase system on control lines


  • Performance & Versatility
  • Ultra Lightweight - only 2g!
  • Ultra Compact
  • Durable
  • Colour Coded
  • Impact Resistant
  • Small Line Optimised
  • High Load Capacity - 350kg (770lb) BL
  • Soft Attachment Compatible
  • Versatile


2.5g 22.9mm 14.9mm 8.5mm 1.4mm - 5.0mm 8mm wide/  5mm diam. Anodised
0.01oz 7/8" 9/16" 5/16" 1/16" - 3/16" 5/16" wide/  3/16" diam


12g 36.0mm 24.8mm 14.5mm 3.0mm - 10.0mm 8mm wide /  10.0mm diam. Anodised
0.4oz 1 7/16" 1" 9/16" 1/8" - 3/8" 3/8" wide /  3/8" diam

    Please see below for a list of supplier sizing guides. If you have any issues, please don't hesitate to get in touch. We're here to help.

    If we are missing a supplier, please send us an email and we'd be happy to source the correct sizing guide for you.

    We offer free shipping to all addresses in the Republic of Ireland for orders over €60 (large, bulky and heavy items like kayaks and boats are excluded from free shipping). Orders under €60 will be charged a flat €6.50 rate.

    We offer shipping to all addresses in the United Kingdom for a flat rate of €14.95. We may not be able to ship large, bulky or heavy items. Please call for such items.

    We reserve the right to change these conditions for exceptionally large or heavy items. We will keep you posted of any changes to the best of our ability.

    We endeavour to ship all Internet orders received before 12.00 noon the same day.

    Internet orders received after 12:00 noon will be shipped next day (approx delivery time Ireland 2-3 working days).

    Delays may be experienced during certain times of the year and if this is the case we will contact you as soon as possible via email.

    We reserve the right to change these conditions due to unforeseen circumstances or if an item has run out of stock and has to be specially ordered in. We will keep you updated of any changes to the best of our ability.

    Inclusion of any product on our website is not a guarantee of it being in stock at the time of ordering. We stock one of the most comprehensive ranges of sailing equipment in the country. However situations beyond our control may occasionally result in an item(s) being temporarily unavailable.

    • Items discontinued by manufacturers or that are no longer available: we aim to remove from our website as quickly as possible, but remember, we are only human after all.
    • If we are unable to supply any item(s) within 7 days, you will be contacted by telephone or email to offer alternatives or cancel your order. Available to order items, marked to follow will be sent automatically when they become available. We do NOT make additional charges for this service.
    • In any case, we aim to deliver goods within a maximum time frame of no more than 10 days from receipt of order. If we are unable to do this, you will be contacted to make arrangements for any necessary refund to be issued. 

    We want you to be 100% satisfied with any online order placed with us. Therefore if you wish to return an item for whatever reason you may contact us by email at within seven days stating the reason for return.

    Goods can be returned for a full refund plus shipping if they are faulty or if the wrong item has been dispatched.

    If the goods have been dispatched as ordered, they can be returned for a refund, but only for the cost of the goods. We are not liable for the original shipping if they have incurred a delivery charge.

    All returns must be organised within 21 days of receiving your order.

    Items must be unused and still have their original packaging and labelling attached.

    If you are returning any goods for exchange, we are not responsible for the carriage back to us or the postage back to you again, please consider this when changing your mind.

    Nothing in these conditions affects your statutory rights as a consumer.

    The PayPal account or card used originally for the purchase will be credited with the original purchase amount (less any delivery charge paid where appropriate.)

    If you are looking to exchange the goods for an alternative product or size, you will be liable for the extra shipping costs from our end.

    Any footwear returned to us must be in its original condition, including boxes and footbeds.

    Any items that we deem unhygienic will not be processed so please clean faulty goods if returning them.

    Please note that if items are returned you should ask for proof of postage from your post office as we reserve the right to refuse a refund if an item is lost whilst being returned. Any item bought online can also be returned in store within the terms and conditions of sale, just remember to bring along your receipt.

    Returns Address

    Viking Marine,
    The Pavilion,
    Marine Road,
    Dun Laoghaire,
    Co. Dublin,
    Republic of Ireland.

    Phone: +00 353 (1) 2806654

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