Skip to content

Cart

Your cart is empty

Harken 3239 75mm Black Magic High-Load Runner Block With Becket

Sale price$686.95 Regular price$779.90

HARKEN 3239 

Black Magic® Runner AirBlock® with Becket - 75mm  NEW!

The entire line of Black Magic® AirBlocks® has been redesigned with a sleek new look. Their unique, performance-packed engineering remains exactly the same.

Used on offshore boats, these strong, lightweight blocks feature high-load Torlon® roller bearings for a high strength-to-weight ratio and reduced wear. Rollers are housed in a center cage and stay parallel for low-friction efficiency. Sculpted hardcoat-anodized aluminum side plates protect sideload ball bearings. Dissimilar metals are isolated to minimize corrosion. Like all Black Magic® AirBlocks®, the three-way head swivels/locks in front/side positions. Blocks are easily disassembled with a single hex wrench.

Use for:
  • Sheets
  • Halyards
  • Running backstays
  • Control lines

Specifications:
  • Sheave Diameter - 75mm (2-15/16")
  • Max Line Diameter - 9/16" (14mm)


Mfg No. Description Length Clevis Pin
Diameter
Max Working
Load
Breaking
Load
Weight
3239 Runner w/ becket 5-3/4"
(146mm)
1/2"
(12.7mm)
5000 Lbs
(2268kg)
10,000 Lbs
(4536kg)
11.2 oz.
(318g)
Harken 3239 75mm Black Magic High-Load Air Block Runner Block With Becket - Pacific Sailboat Supply
Harken 3239 75mm Black Magic High-Load Runner Block With Becket Sale price$686.95 Regular price$779.90