Lewmar Block - Racing Single + Ratchet - Sheave Dia: 80mm
Lewmar Block - Racing Single + Ratchet - Sheave Dia: 80mm


Block - Racing Single + Ratchet - Sheave Dia: 80mm

Part Number: 420597

Usually Leaves Warehouse Within 2-5 Business Days


Part Number: 420597

Designed and manufactured utilising monocoque construction techniques to produce a quality block range with a high strength to low weight ratio, in sizes ranging from 60mm to 155mm.

Radiused alloy cheeks with flush fixings provide extreme durability, while the composite sheaves feature Delrin side thrust balls to reduce friction under load. For high load blocks of 80mm and above Torlon rollers are employed to further reduce rolling friction. For additional strength and wear resistance ratchet blocks feature alloy ratchet sheaves and recessed ratchet levers on both sides.

The three position shackle post provides a range of fixing options, while a web attachment model offers extremely high strength to weight ratio, ideal for a runner, halyard or mainsheet applications. The Racing range also includes stand-up and foot blocks to suit most vessel applications.


  • Monocoque construction provides high strength and low weight
  • Radiused snag-free edges reduce friction
  • Delrin side thrust balls plus Torlon rollers (80mm high load and above)
  • Minimum weight and high performance
  • Wide range of sheave sizes and combinations
  • 60, 80, 105, 130 and 155mm sheave diameters

    Other Details:

    Sheave Dia.: 60mm
    Max Rope Size: 12mm
    Working Load Limit: 800kg
    Breaking Load: 1600kg
    Shackle Pin Dia.: 6mm

  • Shipping

    After ordering online, you will receive an email confirmation containing your order details from [email protected]. Your order will be confirmed within a few minutes of placing your order.

    It is our policy to ensure we deliver to our customers in a timely manner. In order to achieve this we use a range of freight companies depending on the size and weight of your order. In some instances we may use a number of carriers to get your products to you. For example chain may come by road, some electronic equipment by air.

    Orders delivered to Australian Post Codes under $499 attract an $18.00 shipping charge. Orders of $499 or more ship free.

    International orders will be charged at $0.00 initially and our staff will be in contact with a shipping quote. If the quote is not accepted the customer reserves the right to cancel their order and be refunded in full.

    Should you have any queries or concerns about shipping, please contact us and we will have someone get back to you.

    Customer Reviews

    © 2020 Arnold's Boat Shop. All Rights Reserved.