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Harken 100mm Hi-Load Fixed Mastbase Block

Note: Some prices may reflect updates due to international tariffs. Learn the latest about tariffs

Tariff Updates

We are observing how the tariffs are behaving. Lots of our products are imported from Europe and some of the manufacturers are not providing heads up about price increases. We will do everything in our power to hold the best prices, but please consider that in these uncertain times we may be forced to increase the prices without previous notification.

We really appreciate your understanding and look forward to working with you.

What does this mean for you?

  • Some imported products may show a higher price than usual.
  • Prices may change as shipping rates adjust globally.
  • We are committed to providing the best possible pricing and transparency at all times.

How we’re handling it:

  • We only adjust prices when absolutely necessary.
  • We continuously monitor shipping rates and update pricing accordingly.
  • We’ll clearly notify you if a product is affected by tariffs.

Questions? Feel free to contact our team for any clarification or assistance.

Updated: April 2025

MSRP: $649.55
$571.95
(You save $77.60 )
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SKU:
HR3123
Weight:
1.56 LBS
Shipping:
Calculated at Checkout.
Size:
100 mm
Manufacturer part #: 3123

Technical Description
Mastbase Block/Fixed
4 in
102 mm
1 5/8 in
41 mm
5 1/8 in
130 mm
5 1/8 in
130 mm
1 1/16 in
18 mm
24.9 oz
708 g
11000 lb
4990 kg
22000 lb
9980 kg
Note: 5/8" 16 mm HH.
Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase. Flared cheeks prevent chafe on the halyards.

High-load bearing system has Teflon® composite bushing, sideload balls. Hardkote-anodized aluminum sheave for additional strength.