CDI
Flexible Furler FF4 (Max Headstay: 33')
Flexible Furler FF4 (Max Headstay: 33')
Item Number | Reefs | Battens | Price | Availability | Cart |
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CDI-FF4 | Standard Bearing | $995.00 | Available | Add To Order | |
CDI-FF4B | Add Ball Bearings | $1,185.00 | Available | Add To Order |
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Description
Description
The CDI Flexible Furler can be used to reef and furl your sail in any wind conditions. CDI has simplified the design, increasing the system's reliability while lowering costs.
Save 10% when you bundle with a Roller Furling Headsail.
Your sailboat deserves a reliable furling system that makes your sailing experience safer and more enjoyable for many years to come.
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The Flexible Furler is designed to fit over your existing forestay and can be used to both reef and furl your sail in any wind condition.
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We simplified the design and increased it’s reliability over the years.
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A #6 luff tape in the luff of your sail is usually all that’s required to use one of our systems.
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Zero maintenance, just rinse with fresh water 1-2 timers per season.
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New 10-Year Warranty On New System Purchases
Technical Details
Technical Details
Measuring Sails
Measuring Sails
Warranty and Returns
Warranty and Returns
Product Specifications
Luff: 33.0 Feet
Leech: Feet
Foot: Feet
Luff Type:
Foot Type:
Material: ounce



Size Chart
STORM JIB | |||||||
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Boat Size | Code | Sail Type | Luff | Leech | Foot | Cloth (oz) | Sq. Ft. |
20-23 | SJ12.0 | Storm Jib | 12,0 | 9,0 | 6,0 | 6 | 28 |
24-26 | SJ14.0 | Storm Jib | 14,0 | 10,5 | 6,9 | 7 | 36 |
26-28 | SJ16.0 | Storm Jib | 16,0 | 12,0 | 7,6 | 8 | 48 |
29-32 | SJ18.0 | Storm Jib | 18,0 | 14,0 | 8,6 | 8 | 62 |
33-35 | SJ20.0 | Storm Jib | 20,0 | 16,0 | 9,6 | 8 | 77 |
35-39 | SJ22.0 | Storm Jib | 22,0 | 17,5 | 9,6 | 8 | 86 |
40-43 | SJ24.0 | Storm Jib | 24,0 | 19,0 | 10,3 | 9 | 100 |
44-47 | SJ26.0 | Storm Jib | 26,0 | 20,5 | 11,0 | 9 | 115 |
48-50 | SJ28.0 | Storm Jib | 28,0 | 22,5 | 11,9 | 9 | 132 |
50-55 | SJ30.0 | Storm Jib | 30,0 | 23,6 | 12,6 | 9 | 145 |
GALESAIL | |||||||
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Boat Size | Code | Sail Type | Luff | Leech | Foot | Cloth (oz) | Sq. Ft. |
20-30 | GS12.0 | Gale Sail-Jib | 12,0 | 8,0 | 5,5 | 7 | 30 |
30-35 | GS16.0 | Gale Sail-Jib | 16,0 | 12,5 | 8,0 | 8 | 60 |
36-41 | GS20.0 | Gale Sail-Jib | 20,0 | 16,0 | 10,0 | 9 | 100 |
42-50 | GS23.0 | Gale Sail-Jib | 23,0 | 18,0 | 12,0 | 9 | 150 |
51-55 | GS31.0 | Gale Sail-Jib | 31,0 | 21,0 | 16,0 | 10 | 200 |
TRYSAILS | |||||||
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Boat Size | Code | Sail Type | Luff | Leech | Foot | Cloth (oz) | Sq. Ft. |
20-30 | TRI14.0 | Storm Trisail | 14,0 | 16,6 | 7,0 | 8 | 50 |
30-35 | TRI16.0 | Storm Trisail | 16,0 | 19,0 | 8,3 | 8 | 66 |
35-38 | TRI18.0 | Storm Trisail | 18,0 | 21,5 | 9,3 | 9 | 86 |
38-41 | TRI20.0 | Storm Trisail | 20,0 | 23,5 | 10,3 | 9 | 110 |
42-45 | TRI22.0 | Storm Trisail | 22,0 | 25,5 | 11,5 | 9 | 124 |
46-50 | TRI24.0 | Storm Trisail | 24,0 | 29,0 | 12,5 | 9 | 150 |
50-55 | TRI26.0 | Storm Trisail | 26,0 | 30,5 | 13,5 | 10 | 160 |
A-SYMMETRICAL (CRUISING SPINNAKERS) | |||||||
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Size | Forestay Length | Sail Area (sq ft) | Luff | Leach | Foot | Mid-Girth | Cloth (oz) |
0 | 27.4 - 29.5 | 313,2 | 28,5 | 25,6 | 13,1 | 12,8 | 0,75 |
1 | 29.6 - 31.9 | 387,5 | 30,8 | 28,2 | 14,6 | 25,6 | 0,75 |
2 | 31.8 - 34.3 | 461,7 | 33,1 | 30,2 | 16,4 | 25,6 | 0,75 |
3 | 34.0 - 36.7 | 532,8 | 35,4 | 32,0 | 18,0 | 25,6 | 0,75 |
4 | 36.2 - 39.1 | 613,5 | 37,7 | 34,1 | 29,0 | 18,3 | 0,75 |
5 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
6 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
7 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
8 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
9 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
10 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
11 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
12 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
13 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
14 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
15 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
SYMMETRICAL (SPINNAKERS) | ||||||||
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Size |
Boats "I" Dimension |
Min "J" Dimension | Sail Area(sq ft) | Luff | Leach | Foot | Mid-Girth | Cloth (oz) |
0 | 27.4 - 29.5 | 313,2 | 0 | 28,5 | 25,6 | 13,1 | 12,8 | 0,75 |
1 | 29.6 - 31.9 | 387,5 | 30,8 | 0 | 28,2 | 14,6 | 25,6 | 0,75 |
2 | 31.8 - 34.3 | 461,7 | 0 | 33,1 | 30,2 | 16,4 | 25,6 | 0,75 |
3 | 34.0 - 36.7 | 532,8 | 35,4 | 32,0 | 18,0 | 25,6 | 0,75 | |
4 | 36.2 - 39.1 | 613,5 | 37,7 | 34,1 | 29,0 | 18,3 | 0,75 | |
6 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 | |
7 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 | |
8 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 | |
9 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 | |
10 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 | |
11 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 | |
12 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 | |
13 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 | |
14 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 | |
15 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 | |
15 | 38.7 - 41.8 | 693,1 | 40,4 | 36,8 | 20,2 | 19,4 | 1,5 |
CDI - FLEXIBLE FURLERS | |||||
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Unit | Boat Size | Max Forestay Length | Max. Forestay Diameter | Maximum Turnbuckle | Sail Area |
FF1 | Under 20' | 21' | 1/8" | 1/4" | 90 Sq ft |
FF2 | 20-24 | 29' | 3/6" | 5/16" | 170 Sq ft |
FF4 | 23-27 | 33' | 7/32" | 3/8" | 400 Sq ft |
FF6 | 26-28 | 39' | 1/4" | 3/8" | 400 Sq ft |
FF7 | 27-32 | 47' | 1/4" | 1/2" | 400 Sq ft |
FF9 | 30-36 | 53' | 5/16" | 1/2"( most 5/8") | 900+ Sq ft |
PROFURL | |||||
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Unit | Boat Size | Max Forestay Length | Max. Forestay Diameter | Max Clevis Pin | Sail Area |
C260 | Under 22' | 28' | 3/16" | NA | 160 |
C290 | 22-30" | 40' | 1/4" | 3/8" | 320 |
C320 | 30-36" | 46' | 9/32" | 1/2" | 430 |
C350 | 25-41" | 46' | 5/16" | 1/2" | 59 |
C420 | 40-45" | 60' | 3/8" | 5/8" | 860 |
C430 | 42-55" | 60' | 1/2" | 3/4" | 1075 |
NC32 | 24-34" | 40' | 9/32" | 3/8" | 400 |
LC32 | 28-36" | 46' | 5/16" | 1/2" | 430 |
NC42 | 37-42" | 52' | 3/8" | 5/8" | 760 |
LC42 | 40-50' | 60' | 1/2" | 5/8" | 860" |
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