17
2801
Part
No.
Description
Sheave 
Ø
Weight
Max line
Ø
Maximum
working load
Breaking
load
in
mm
oz
g
in
mm
lb
kg
lb
kg
2801
 40 mm Zircon Catamaran Mainsheet System – 1.5x grip 57 mm ratchet
1 9/16
40
31.3
888
5/16
 8
1200
545
3600
1636
40 mm Zircon Cat 
Mainsheet System
This is the newest entrant in the ongoing process of creating high-efficiency 
mainsheet systems that keeps up with ever more aggressive sailing styles in the 
Olympic NACRA 17 or other Grand Prix multihulls. At the heart of the 2801 
system are 40 mm Zircon sheaves that provide incredible friction reduction while 
generating 30% less airflow disruption and clearing the tiller more easily. There’s 
a swivel on both top and bottom units to allow for better alignment with load and 
position of the crew. Sailors are still free to select any of the Harken Power3 
ratchet sheaves to match weather conditions and to use the system in 10:1, 11:1, 
or 12:1 mode to better fit their sailing styles. Sales for the second half of 2023 
and 2024 point to excellent adoption by top-level teams during the Marseille 
Olympic quad. 
Part no. 3415 
Attach a  Zircon block with one of 
our versatile soft shackles. Choose 
70mm soft shackle with a unique 
T-Close in 4mm line—perfectly 
suited for these blocks. 
MOUNT WITH
SOFT ATTACHMENT

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