174
163
165
208
483
1134
434
435
436
Small Boat Furling Components: 
Drums
All Harken Small Boat furling components can be purchased individually to mix and match. 
Systems require a drum and upper swivel. See page 162 for swivels. Some systems also 
available as a complete kit (see below).
Conventional Furling Drums
Harken Small Boat furling systems allow the trailerable cruising or dinghy sailor to set and furl 
the jib from the cockpit. Drums feature multiple stacked races of Delrin® or Torlon® bearings 
for smooth rotation under load. Small Boat units are for furling only, not reefing.
Continuous Line-Drive Furling Drum
The continuous line-drive furler is the perfect solution for high-performance skiffs and 
dinghies that use oversized jibs/gennakers and for staysails on larger boats. Unlike 
conventional furling drums, the low-profile line-driver never runs out of line, and can 
completely furl any sized sail. Offset holes in the drive sheave grip line securely, with the 
stripper arm and feeder working together to prevent line from jamming. The line guard adjusts 
in 90-degree increments to accommodate attachments to the boat.
Delrin is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates.
Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
Continuous line-drive furler features 
offset holes in the drive sheave to 
grip line securely.
Small Boat Furling Kits
Harken Small Boat furling systems allow the trailerable cruising 
or dinghy sailor to set and furl the jib from the cockpit. Small Boat 
units are for furling only, not reefing.
All kits include the drum and upper swivel. The 483 kit also 
includes a hoistable halyard swivel. To order components 
separately, see swivels page 162, drums above.
For additional specifications, see corresponding drum part number.
Part
No.
Description
Pin-to-pin
length
Drum
Ø
Line
Ø
Jaw
width
Max luff 
wire Ø
Clevis pin
Ø
Weight
Maximum
working load
 Upper 
swivel
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
oz
g
lb
kg
 163 
 Low-load furler 
 2 1/2 
 64 
 2 7/8 
 73 
 5/32 
 4 
 5/16 
 8 
 1/8 
 3 
 1/4 
 6.4 
 5 
 142 
 500 
 227 
 162 
 165 
 Standard furler 
 2 1/2 
 64 
 2 7/8 
 73 
 5/32 
 4 
 5/16 
 8 
 1/8 
 3 
 1/4 
 6.4 
 5 
 142 
 950 
 431 
 164 
 208 
 High-load furler 
 4 
 102 
 4 3/16  106 
 1/4 
 6 
 3/8 
 10 
 3/16 
 5 
 5/16 
 7.9 
 13.6 
 386 
 2000 
 907 
 207 
 1134 
 Continuous line-drive furler 
 2 11/16 
 68 
 2 7/8 
 73 
 3/16 
 5 
 5/16 
 8 
 1/8 
 3 
 1/4 
 6.4 
 5.4 
 154 
 950 
 431 
 164 
Part
No.
Description
Fits boats
 Includes
Weight
Maximum
working load
Monohull
Catamaran
 Upper
swivel
 Hoistable
swivel
 Drum
ft
m
ft
m
 oz
 g
lb
kg
 434 
 Low-load kit 
 Under 16 
 Under 4.9 
 
 
 162 
 
 163 
 7.6 
 215 
 500 
 227 
 435 
 Standard kit 
 16 - 20 
  4.9 - 6.1 
Up To 18 Up To 5.5 
 164 
 
 165 
 7.6 
 215 
 950 
 431 
 436 
 High-load kit 
 20 - 25 
  6.1 - 7.6 
 18 - 23 
 5.5 - 7 
 207 
 
 208 
 22.8 
 646 
 2000 
 907 
 483 
 Standard kit/hoistable halyard 
 16 - 20 
  4.9 - 6.1 
Up To 18 Up To 5.5 
 164 
 464 
 165 
 11.2 
 318 
 950 
 431 

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