FCS Fin Data

2023/2024    //   Older Seasons // Specialty Series Fin Sizing

Essential Series Fins

BASE ”

BASE MM

DEPTH ”

DEPTH MM

AREA ”

AREA MM

SWEEP DEG °

FOIL

REACTOR SML (SIDE)

4.22

107

4.41

112.0

14.45

9324

32.0

FLAT

REACTOR SML (CTR)

4.17

105.8

4.3

109.1

13.44

8672

31.0

50/50

REACTOR MED (SIDE)

4.33

110

4.53

115.0

15.23

9824

32.0

FLAT

REACTOR MED (CTR)

4.28

108.7

4.41

112.0

14.22

9172

31

50/50

REACTOR LRG (SIDE)

4.44

112.8

4.65

117.9

16.00

10324

32.0

FLAT

REACTOR LRG (CTR)

4.39

111.4

4.52

114.8

14.99

9672

31.0

50/50

PERFORMER XS

4.13

104.8

4.3

109.3

13.26

8554

33.7

IFT

PERFORMER SML

4.25

107.9

4.43

112.4

14.03

9054

33.7

IFT

PERFORMER MED

4.37

110.8

4.55

115.4

14.81

9554

33.7

IFT

PERFORMER LRG

4.48

113.7

4.67

118.4

15.58

10054

33.7

IFT

PERFORMER XL

4.59

116.5

4.78

121.4

16.36

10554

33.7

IFT

ACCELERATOR GROM

3.95

100.3

4.13

104.7

12.38

7895

33.7

FLAT

ACCELERATOR MED

4.39

111.5

4.58

116.3

15.28

9860

33.7

FLAT

ACCELERATOR LRG

4.50

114.3

4.70

119.2

16.06

10360

33.7

FLAT

CARVER MED

4.47

113.4

4.54

115.3

14.96

9650

37.0

FLAT

CARVER LRG

4.58

116.3

4.66

118.2

15.73

10150

37.0

FLAT

CARVER XL

4.69

119.0

4.77

121.0

16.51

10650

37.0

FLAT

REACTOR (Q-REAR) MED

4.03

102.2

4.40

111.8

12.63

8150

28.5

80/20

PERFORMER (Q-REAR) SML

3.83

97.2

3.99

101.3

11.08

7150

32.4

80/20

PERFORMER (Q-REAR) MED

4.09

103.7

4.26

108.1

12.63

8150

32.4

80/20

PERFORMER (Q-REAR) LRG

4.33

110.0

4.51

114.6

14.18

9150

32.4

80/20

CARVER (Q-REAR) SML

3.86

98.0

3.93

99.8

11.07

7140

33.2

50/50

CARVER (Q-REAR) MED

4.14

105.0

4.21

106.9

12.63

8150

33.2

50/50

 

H-Series Fins

BASE ”

BASE MM

DEPTH ”

DEPTH MM

AREA ”

AREA MM

SWEEP DEG.

FOIL

H4 SML (CTR)

4.29

108.8

4.49

113.9

13.82

8917

37.2

50/50

H4 SML (SIDE)

4.36

110.6

4.34

110.1

14.29

9221

38.3

FLAT

H4 MED (CTR)

4.40

111.7

4.61

117.0

14.58

9405

37.2

50/50

H4 MED (SIDE)

4.48

113.6

4.45

113.0

15.07

9721

38.3

FLAT

H4 LRG (CTR)

4.52

114.6

4.73

120.0

15.33

9893

37.2

50/50

H4 LRG (SIDE)

4.59

116.5

4.57

115.9

15.84

10221

38.3

FLAT

H4 (Q-REAR)

4.09

103.7

4.24

107.5

12.62

8140

33.2

IFT-80/20

 

Athlete Series Fins

BASE ”

BASE MM

DEPTH ”

DEPTH MM

AREA ”

AREA MM

SWEEP DEG.

FOIL

JW GROM

4.10

104.1

4.19

106.4

12.81

8264

35.8

FLAT/BEV

JW MED

4.46

113.1

4.56

115.6

15.13

9763

35.8

FLAT/BEV

JW LRG

4.57

116.0

4.67

118.6

15.91

10262

35.8

FLAT/BEV

FT MED

4.41

111.9

4.54

115.2

14.93

9634

34.8

FLAT/BEV

FT LRG

4.52

114.8

4.66

118.2

15.71

10134

34.8

FLAT/BEV

MF GROM

4.04

102.6

4.20

106.6

12.73

8215

36.0

FLAT/BEV

MF MED

4.35

110.3

4.50

114.3

14.62

9434

36.0

FLAT/BEV

MF LRG

4.49

114.0

4.67

118.5

15.70

10131

36.0

FLAT/BEV

KA GROM

4.15

105.3

4.18

106.0

12.52

8075

34.9

FLAT

KA SML

4.37

111.0

4.41

112.0

13.85

8934

35.1

FLAT

KA MED

4.53

115.0

4.53

115.0

14.73

9500

35.1

FLAT

KA LRG

4.67

118.5

4.70

119.3

15.84

10220

35.1

FLAT

SB SML

4.28

108.6

4.47

113.4

14.51

9360

33.7

FLAT

SF MED (SIDE)

4.40

111.7

4.55

115.5

15.17

9785

33.3

FLAT

SF MED (CTR)

4.29

109.0

4.50

114.1

14.06

9070

31.0

50/50

 

Shaper Series Fins

BASE ”

BASE MM

DEPTH ”

DEPTH MM

AREA ”

AREA MM

SWEEP DEG.

FOIL

JS MED

4.53

115.0

4.53

115.0

15.08

9730

36.1

FLAT

JS LRG

4.61

117.0

4.65

118.0

15.81

10200

36.1

FLAT

DHD MED (Ctr)

4.30

109.3

4.46

113.4

14.25

9195

34.5

50/50

DHD MED (Side)

4.41

112.0

4.57

116.0

15.49

9994

35.4

80/20

DHD LRG (Ctr)

4.40

111.7

4.56

115.9

14.88

9601

34.5

50/50

DHD LRG (Side)

4.52

114.6

4.66

118.3

16.12

10400

35.4

80/20

HS MED

4.50

114.1

4.59

116.4

14.97

9656

31.8

CAMBERED

HS LRG

4.61

117.0

4.70

119.4

15.74

10158

31.8

CAMBERED

HS (Q-Rear)

4.14

105.0

4.21

106.9

12.63

8150

33.7

CAMBERED

PYZEL MED

4.53

115.0

4.61

117.0

15.21

9813

33.4

FLAT

PYZEL LRG

4.65

118.1

4.73

120.1

16.04

10350

33.5

FLAT

MB SML

4.19

106.3

4.46

113.2

13.71

8847

32.0

FLAT

MB MED

4.30

109.2

4.59

116.4

14.49

9347

31.7

FLAT

MB LRG

4.41

111.9

4.74

120.3

15.26

9847

32.9

FLAT

MB MED/LRG (Q-Rear)

4.10

104.0

4.26

108.0

12.64

8158

32.4

50/50

AM XS

4.26

108.1

4.26

108.0

13.02

8400

35.5

FLAT

AM SML

4.37

111.0

4.37

111.0

13.71

8846

35.5

FLAT

AM MED (Side)

4.57

116.0

4.53

115.0

14.89

9608

36.6

FLAT

AM MED (Ctr)

4.33

110.0

4.41

112.0

13.72

8852

35.0

FLAT

AM MED (Q-Rear)

4.10

104.1

4.26

108.0

12.64

8158

32.4

50/50

AM LRG (Side)

4.61

117.1

4.69

119.0

15.63

10083

36.3

FLAT

AM LRG (Ctr)

4.47

113.5

4.45

113.0

14.68

9469

38.6

50/50

AM LRG (Q-Rear)

4.10

104.1

4.26

108.0

12.64

8158

32.4

50/50

CI MED

4.39

111.4

4.59

116.4

15.04

9700

30.3

FLAT

CI LRG

4.50

114.2

4.70

119.3

15.79

10190

30.3

FLAT

CC MED

4.39

111.5

4.58

116.3

15.28

9860

33.7

FLAT

CC MED (Q-Rear)

3.83

97.2

3.99

101.3

11.08

7150

32.4

80/20

CC LRG

4.50

114.3

4.70

119.2

16.06

10360

33.7

FLAT

CC LRG (Q-Rear)

4.09

103.7

4.26

108.1

12.63

8150

32.4

80/20

SHARPEYE MED

4.48

113.6

4.55

115.4

15.13

9761

34.8

FLAT/BEV

SHARPEYE LRG

4.59

116.5

4.66

118.3

15.91

10263

34.8

FLAT/BEV

TOKORO MED (Ctr)

4.43

112.5

4.44

112.7

14.25

9196

35.2

50/50

TOKORO MED (Side)

4.50

114.1

4.50

114.2

14.65

9449

35.2

FLAT

TOKORO LRG (Ctr)

4.55

115.5

4.56

115.7

15.03

9696

35.2

50/50

TOKORO LRG (Side)

4.61

117.0

4.62

117.2

15.42

9948

35.2

FLAT

GL MED

4.21

107.0

4.21

119.7

14.84

9572

31.1

FLAT

GL (Q-Rear)

3.77

95.8

3.74

95.2

9.38

6054

31.4

FLAT

AIPA (Side) 4.87 123.7 5.43 137.7 19.24 12410 33.6 50/50
AIPA (Ctr) 3.33 84.5 3.13 79.5 7.91 5103 34.6 50/50

 

Specialty Series Fins

BASE ”

BASE MM

DEPTH ”

DEPTH MM

AREA ”

AREA MM

SWEEP DEG.

FOIL

SPLIT QUAD (Side)

5.41

137.3

4.79

121.5

19.27

12432

42.5

FLAT

SPLIT QUAD (Q-Rear)

4.03

102.2

4.40

118.8

12.63

8150

28.5

80/20

MB QUAD (Side)

5.27

133.7

4.66

118.4

18.31

11810

42.5

FLAT

MB QUAD (Q-Rear)

4.03

102.2

4.40

111.8

12.63

8150

28.5

80/20

MODERN KEEL

6.41

162.8

5.50

139.5

25.05

16160

32.8

FLAT

RETRO KEEL

7.28

184.8

4.73

120.0

22.58

14565

38.3

80/20

CI KEEL

6.41

162.8

5.15

130.8

25.53

16474

37.0

FLAT

ALBUM KEEL

5.96

151.3

5.22

132.5

22.74

14672

38.2

FLAT

PERFORMER KEEL

6.69

169.9

5.25

133.3

26.42

17043

32.7

FLAT

PERFORMER QUAD (Side)

5.63

143.0

4.83

122.8

21.16

13654

35.7

FLAT

PERFORMER QUAD (Q-Rear)

4.11

104.5

3.12

79.3

9.65

6223

34.2

FLAT

PERFORMER TWIN

5.00

126.8

5.15

130.9

19.14

12350

33.3

FLAT

PERFORMER TWIN (+1)

3.73

94.8

3.83

97.2

11.32

7300

37.3

50/50

MR TWIN

5.06

128.4

5.56

141.1

21.06

13590

32.1

FLAT

MR TWIN (+1)

3.31

84.0

3.34

84.8

8.23

5307

29.1

50/50

MR FREERIDE TWIN

5.08

129.0

6.09

154.8

22.84

14733

28.4

FLAT

OTIS TWIN

5.26

133.6

5.35

135.8

21.44

13835

32.7

FLAT

OTIS TWIN (+1)

3.30

83.7

3.45

87.6

8.71

5620

32.7

50/50

ALBUM TWIN

5.17

131.4

5.44

138.1

20.62

13306

32.8

FLAT

ALBUM TWIN (+1)

3.29

83.5

3.51

89.1

8.93

5759

29.3

50/50

BM TWIN

5.66

143.7

5.41

137.4

23.24

14991

35.2

FLAT

AM TWIN

5.07

128.6

5.61

142.3

20.37

13140

32.1

FLAT

AM TWIN (+1)

3.45

87.5

3.69

93.6

9.46

6100

36.9

50/50

POWER TWIN

5.26

133.6

5.35

135.8

21.44

13835

32.7

FLAT

POWER TWIN (+1)

3.30

83.7

3.45

87.6

8.71

5620

33.6

50/50

POWER TWIN S-M

5.00

126.9

5.10

129.0

19.45

12546

32.7

FLAT

POWER TWIN S-M (+1)

3.10

78.6

3.25

82.4

7.86

5070

33.6

50/50

CHRISTENSON KEEL

6.39

162.1

5.08

128.9

23.64

15250

34.7

FLAT

CHRISTENSON TWIN

5.14

130.5

5.22

132.5

19.75

12744

34.7

FLAT

MF TWIN

5.05

128.2

5.32

135.0

20.63

13308

37.0

FLAT/BEV

MF TWIN (+1)

3.72

94.5

3.79

96.1

10.39

6700

32.9

50/50

JS POWER TWIN 5.26 133.6 5.35 135.8 21.44 13835 32.7 FLAT
JS POWER TWIN + 1 3.30 83.7 3.45 87.6 8.71 5620 33.6 50/50
JS MODERN KEEL 6.41 162.8 5.50 139.5 25.05 16160 32.8 FLAT
NF BW G10 Tri Side 4.34 110.2 4.58 116.3 15.25 9838 32.1 80/20
NF BW G10 Tri Ctr 4.42 112.2 4.55 115.4 15.28 9855 33.8 50/50
NF BW Quad Side 3.98 100.9 4.40 111.8 12.64 8153 28.9 70/30
NF BW G10 Quad Rear 3.98 100.9 4.40 111.8 12.64 8153 28.9 50/50

 

FCS II Longboard Fins

BASE ”

BASE MM

DEPTH ”

DEPTH MM

AREA ”

AREA MM

SWEEP DEG.

FOIL

ESSENTIAL

 

 

 

 

 

 

 

 

LB CONNECT 6”

4.27

108.5

6.00

152.4

17.65

11390

33.7

50/50

LB CONNECT 7”

4.99

126.6

7.01

177.9

24.05

15518

33.7

50/50

LB CONNECT 8”

5.64

143.1

7.96

202.0

30.71

19812

33.7

50/50

LB CONNECT 9”

6.43

163.1

9.03

229.2

39.91

25748

33.7

50/50

LB CONNECT 10”

7.13

180.9

10.01

254.1

49.06

31653

33.7

50/50

LB FLOW II 8.5”

6.42

162.9

8.50

215.7

30.91

19944

33.1

50/50

LB FLOW II 9.5”

7.17

182.1

9.50

241.2

38.64

24928

33.1

50/50

LB FLOW II 10.5”

7.96

202.0

10.54

267.5

47.53

30667

33.1

50/50

LB PIVOT II 9.75”

7.29

184.9

9.75

247.7

52.08

33599

27.7

50/50

LB PIVOT II 10.25”

7.66

194.3

10.25

260.4

57.49

37091

27.7

50/50

LB PIVOT II 10.75”

8.03

203.9

10.75

273.1

63.31

40842

27.7

50/50

SIGNATURE

 

 

 

 

 

 

 

 

LB KELIA 9.75”

7.11

180.4

9.75

247.5

39.56

25523

33.8

50/50

LB THOMAS 9.75”

6.85

173.8

9.76

247.6

37.29

24059

30.5

50/50

LB THOMAS 10.25”

7.20

182.8

10.26

260.3

41.67

26881

30.5

50/50

LB THOMAS 10.75”

7.55

191.7

10.76

273.0

45.36

29265

30.5

50/50

LB THOMAS 11.5”

8.08

205.0

11.51

292.1

51.88

33471

30.5

50/50

LB CHRISTENSON 7.5”

5.43

137.8

7.51

190.5

24.54

15833

33.3

50/50

LB CHRISTENSON 8”

5.79

147.0

8.01

203.2

27.92

18015

33.3

50/50

LB CHRISTENSON 8.5”

6.15

156.2

8.51

215.9

31.52

20337

33.3

50/50

LB CHRISTENSON 9”

6.52

165.4

9.01

228.6

35.34

22800

33.3

50/50

LB CHRISTENSON 9.5”

6.91

175.4

9.51

241.3

39.38

25404

33.3

50/50

LB WAXHEAD 10”

6.82

173.2

10.01

254.0

42.60

27487

29.8

50/50

LB SKINDOG 7”

5.32

135.0

6.98

177.1

31.69

16869

30.5

50/50

SPECIALTY

 

 

 

 

 

 

 

 

LB CLIQUE 7”

4.74

120.3

7.01

177.8

21.95

14162

34.5

50/50

LB CLIQUE 8”

5.42

137.5

8.01

203.2

28.67

18497

34.5

50/50

LB CLIQUE 9”

6.10

154.7

9.01

228.6

36.29

23410

34.5

50/50

SINGLE FIN 6”

4.89

124.0

6.00

152.4

21.19

13672

32.7

50/50

SINGLE FIN 7”

5.70

144.7

7.01

177.8

28.84

18607

32.7

50/50

SINGLE FIN 8”

6.51

165.3

8.01

203.2

37.67

24304

32.7

50/50

SIDE BYTES

 

 

 

 

 

 

 

 

CARVER SML SIDE BYTE

3.86

98.0

3.93

99.8

11.07

7140

33.2

FLAT

CONNECT SML SIDE BYTE

3.64

92.3

3.62

92.0

9.30

6000

29.9

FLAT

SKINDOG MED SIDE BYTE

4.39

111.5

4.58

116.3

15.28

9860

33.7

FLAT

HYBRID

 

 

 

 

 

 

 

 

HARLEY SINGLE 5.5”

4.84

122.8

5.27

133.7

18.50

11937

32.1

50/50

HARLEY XXL

4.61

117.0

4.99

126.7

16.93

10923

34.0

FLAT

HARLEY XXL (Q-REAR)

4.10

104.0

4.26

108.0

12.64

8158

32.4

80/20

HARLEY MID

4.45

112.9

4.70

119.3

16.03

10341

32.0

FLAT

HARLEY MID (CTR)

4.40

111.7

4.54

115.2

14.80

9550

30.7

50/50

HARLEY MID (Q-REAR)

4.09

103.7

4.26

108.1

12.63

8150

32.4

80/20

MID SINGLE 6.5”

4.89

124.1

6.50

165.1

22.78

14697

30.7

50/50

MID SINGLE 7”

5.27

133.7

7.00

177.8

26.42

17046

30.7

50/50

MID SIDE BYTE

3.43

87.1

3.62

92.0

9.28

5990

28.6

FLAT

MID CARVER

4.69

119.1

4.77

121.1

16.52

10657

37.0

FLAT

MID CARVER (+1)

4.48

113.7

4.66

118.4

15.58

10052

33.8

50/50

This page can be printed as a PDF

 

All FCS fins are classified by the following characteristics; Base, Depth, Area and Sweep.

Understanding how these fin characteristics can change the performance of your surfboard is an important consideration when working out which FCS fins are best for you. 

BASE
Base is the length between the leading and trailing edge where the fin meets the board. Base is primarily linked to drive. Fins with a longer base will offer substantially more drive and acceleration.

DEPTH
Depth is the distance the fin penetrates into the water. Depth directly relates to hold. The greater the depth the more hold, the shorter the depth the more a board will slide and release.

SWEEP
Sweep is the angle measuring how far the outline of the fin is curved backwards; also referred to as rake. Sweep has a direct influence on pivot. Fins with more sweep produce a longer turning arc, less sweep offers a tighter turning arc.

AREA
Area is the total surface area of the fin.

DI = Discontinued item

New Sizing for Specialty Fins

You may notice new size ratings for our Specialty Fin Range. Previously, all Specialty Series fins were rated an XL. To better reflect fin sizing, we now have 3 new size categories: S-M, M-L, and L-XL.

Please refer to the Size/Fin Data to compare dimensions.

Need More Info?

Read: The Guide To FCS Fins

Watch Video: Find Your Fin - The FCS Fin Clinic 

 

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