SURFBOARDS > BLACK THUMB

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BLACK THUMB

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​DESCRIPTION

Derived from the Black Diamond with the same nose outline and the addition of a pulled-in round thumb tail.  This board has single to double concave with an accelerated tail rocker. It excels in the upper reaches for wave size of a shortboard but you ride it 2 inches shorter, a half inch wider and in the same thickness.  The shorter rail line allows for tighter arcing turns in the pocket.

​Designed for bigger surf, the Black Thumb is good wave board that paddles easy and can handle high speed turns.

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FEATURES

ROCKER

Low entry rocker with accelerated tail rocker in the last 18 inches of the board.

RAILS

Medium Full Rails with tucked hard edges to handle high speed turns.

BOTTOM

Deep single to a double out the tail. Fast and stable in high speed turns..

FINS

Tri fin is standard.  Also works well as a quad.  Five fin convertible is a great option.

WAVE TYPE

punchy from 2 to 8 feet

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SIZE GUIDE

Standard Sizes

Surfers weight 
according to ability

BLACK THUMB	Ltr	Adv	Inter	Novice
5’0 x 17 1/2 x 1 7/8	17.81	110	95	80
5’1 x 17 5/8 x 1 15/16	18.78	115	100	85
5’2 x 17 3/4 x 1 15/16	19.32	120	100	85
5’3 x 17 7/8 x 2	20.33	125	105	90
5’4 x 18 x 2	20.85	125	110	90
5’5 x 18 1/8 x 2	21.38	130	115	95
5’6 x 18 3/8 x 2 1/16	22.64	135	120	100
5’7 x 18 7/16 x 2 1/8	23.66	145	125	105
5’8 x 18 1/2 x 2 1/8	24.13	150	130	105
5’9 x 18 5/8 x 2 3/16	25.42	155	135	110
5’10 x 18 3/4 x 2 1/4	26.84	165	140	120
5’11 x 18 7/8 x 2 5/16	27.89	170	145	125
6’0 x 19 x 2 3/8	29.25	180	150	130
6’1 x 19 1/8 x 2 3/8	29.97	185	155	130
6’2 x 19 1/4 x 2 7/16	31.24	190	160	135
6’3 x 19 3/8 x 2 7/16	31.82	195	165	140
6’4 x 19 1/2 x 2 1/2	33.38​	205​	175​	145
6’5 x 19 3/4 x 2 9/16	35.04	215	185	155
6’6 x 20 x 2 5/8	36.78	225	195	160
6’7 x 20 1/4 x 2 11/16	39.07	240	205	170
6’8 x 20 1/2 x 2 13/16	42.36	260	220	185

how to size this board

Order this board 2" shorter, 3/8" wider and same thickness or 1/16 thinner than your high performance short board. ​Custom dims are always available to match your needs or preferences. Please feel free to use our BOARD SIZING QUESTIONNAIRE to receive more info about our boards and sizing.

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SIMILAR MODELS

Black Diamond

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