Harken sailing block pulley with braided ropes for marine rigging on sailboat deck

Harken Black Magic Air Runners

Harken Black Magic Air Runners

Runners are used on running backstays of offshore boats to adjust mast bend for different wind conditions. Integrated sideplate bails and recessed cotter key help produce a smooth design that won’t snag lifelines. Foam padded Block Socks easily install over Air Runner blocks to protect your blocks, deck, and crew.

Low-friction efficiency

Center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Captive Delrin® ball bearings carry side loads.

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HARKEN 125mm Block Sock

HKN-3037

Harken

Harken 125 mm Block Sock

5 900 XPF
5 900 XPF
6 700 XPF
HARKEN 75mm Runner Block — Becket

HKN-3239

Harken

Harken 75 mm Runner Block — Becket

81 100 XPF
81 100 XPF
91 100 XPF
HARKEN 75mm Block Sock

HKN-3035

Harken

Harken 75 mm Block Sock

5 300 XPF
5 300 XPF
5 900 XPF
HARKEN 150mm Runner Block — Becket

HKN-3265

Harken

Harken 150 mm Runner Block — Becket

373 600 XPF
373 600 XPF
419 800 XPF
HARKEN 125mm Runner Block — Becket

HKN-3260

Harken

Harken 125 mm Runner Block — Becket

189 500 XPF
189 500 XPF
213 000 XPF
HARKEN 100mm Runner Block — Becket

HKN-3252

Harken

Harken 100 mm Runner Block — Becket

124 100 XPF
124 100 XPF
139 400 XPF
HARKEN 75mm Runner Block

HKN-3251

Harken

Harken Runner Block

From 62 500 XPF
From 62 500 XPF
70 200 XPF
HARKEN 57mm Runner Block

HKN-3224

Harken

Harken 57 mm Runner Block

42 900 XPF
42 900 XPF
48 300 XPF
Harken 150 mm Block Sock

HKN-3038

Harken

Harken 150 mm Block Sock

6 300 XPF
6 300 XPF
7 100 XPF