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K4's super Stiff technology, combined with a precision CNC'd foil and hours of testing, has resulted in a top performing kite surfboard fin.

The K4's technology flexes and works with you to allow crazy grip, full speed turns, and the most extreme vertical hacks. The material that's used, combined with the design of the fin, allow you to push and perform harder and better than ever before.

Control, speed, and maneuverability are the three key performance characteristics of these fins.

Ficha técnica

Temporada	2019

Size Indication		Height		Chest		Waist
EU	US	Ft/In	Cm	In	Cm	In	Cm
46	XS	5'6"-5'8"	167-173	35-38	89-96	28-30	71-78
90	XST	5'7"-5'9"	171-177	35-38	89-96	28-30	71-78
24	SS	5'6"-5'8"	167-173	37-40	94-101	30-32	76-83
48	S	5'7"-5'9"	171-177	37-40	94-101	30-32	76-83
94	ST	5'9"-5'11"	175-181	37-40	94-101	30-32	76-83
25	MS	5'7"-5'9	171-177	39-42	99-106	32-34	81-88
50	M	5'9"-5'11"	175-181	39-42	99-106	32-34	81-88
98	MT	5'11"-6'1"	179-186	39-42	99-106	32-34	81-88
26	LS	5'9"-5'11"	175-181	41-44	103-110	34-36	86-93
52	L	5'11"-6'1"	179-186	41-44	103-110	34-36	86-93
102	LT	6'0"-6'2"	183-189	41-44	103-110	34-36	86-93
27	XLS	5'11"-6'1"	179-186	43-46	108-115	36-38	91-98
54	XL	6'0"-6'2"	183-189	43-46	108-115	36-38	91-98
106	XLT	6'2"-6'4"	187-193	43-46	108-115	36-38	91-98
28	XXLS	6'0"-6'2"	183-189	45-48	113-120	38-40	96-103
56	XXL	6'1"-6'3"	185-191	45-48	113-120	38-40	96-103
29	XXXLS	6'0"-6'2"	183-189	47-50	120-125	40-42	101-108
58	XXXL	6'2"-6'4"	187-193	47-50	120-125	40-42	101-108

Size Indication		Height		Chest		Waist
EU	US	Ft/In	Cm	In	Cm	In	Cm
32	2 (XXS)	5'1"-5'4"	155-158	29-31	74-79	22-25	56-64
34	4 (XS)	5'2"-5'4"	158-163	30-33	76-84	24-27	62-69
36	6 (S)	5'3"-5'5"	160-165	32-35	81-89	26-29	67-74
38	8 (M)	5'5"-5'7"	165-170	34-37	86-94	28-31	72-79
38T	8T (MT)	5'7"-5'9"	170-175	34-37	86-94	28-31	72-79
40	10 (L)	5'7"-5'9	170-175	36-39	91-99	30-33	77-84
42	12 (XL)	5'9"-5'11"	175-180	37-40	94-102	32-35	82-89

Size Indication	Height		Chest		Waist
EU	Ft/In	Cm	In	Cm	In	Cm
6	4'0"-4'4"	124-132	24-26	61-66	22-24	56-61
8	4'4"-4'8"	132-143	25-27	64-69	22.5-24.5	57-62
10	4'8"-5'0"	143-152	27-29	68-73	23-25	59-64
12	5'0"-5'4"	152-163	28-30	71-76	24.5-26.5	62-67
14	5'4"-5'7"	163-170	30-32	76-82	26-28	66-71
16	5'7"-5'9	170-175	32-34	82-87	27.5-29.5	70-75

Size Indication	Height		Chest		Waist
	Ft/In	Cm	In	Cm	In	Cm
K2	2'8"-3'1"	80-90	16-20	40-50	16-20	40-50
K4	2'11"-3'4"	90-100	18-22	45-55	18-22	45-55
K6	3'4"-3'7"	100-110	20-24	50-60	20-24	50-60

Model	Size	Waist		Spreader bar size
Model	US	In	Cm	Std	EZ
Men’s	XS	28-30	71-78	25cm	25cm
	S	30-32	76-83	25cm	25cm
	M	32-34	81-88	25cm	25cm
	L	34-36	86-93	30cm	25cm
	XL	36-38	91-98	30cm	30cm

Ladies	XS	23-25	56-63	20cm	-
	S	25-27	63-70	25cm	25cm
	M	27-29	70-76	25cm	25cm
	L	29-32	76-82	25cm	25cm

Youth	S: 6-8 years	20-22	52-56	20cm	-
	M: 9-11 years	22-24	56-61	20cm	-
	L: 12-14 years	22.5-25	57-64	20cm	-

	WEIGHT		HEIGHT		CHEST		WAIST		HIPS
SIZE	Pound	Kilogram	ft	cm	inch	cm	inch	cm	inch	cm
46/XS	120-140	54-64	5'6-5'8"	168-173	99-106	92-96	27-30	69-75	30-33	79-85
48/S	135-155	61-70	5'7-5'9"	171-176	38-40	96-100	30-32	75-81	33-35	85-91
49/ST/94	140-160	63-72	5'10-6'1"	178-186	38-40	96-100	30-32	75-81	33-35	85-91
50/M	150-170	68-77	5'8-5'10"	173-178	40-42	100-106	31-34	80-86	35-38	90-96
51/MT/98	155-175	70-79	6'0-6'3"	183-190	40-42	100-106	31-34	80-86	35-38	90-96
52/L	170-190	77-86	5'9-5'11"	177-181	42-44	106-111	33-36	85-91	39-42	95-101
53/LT/102	175-195	79-88	6'2-6'5"	188-196	42-44	106-111	33-36	85-91	39-42	95-101
54/XL	190-210	86-95	5'10-6'1"	178-186	44-46	111-116	35-38	90-96	38-41	100-106
55/XLT/106	195-210	88-97	6'2-6'5	188-196	44-46	111-116	35-38	90-96	38-41	100-106
56/XXL	210-230	95-104	6'0-6'2	183-188	46-48	116-121	37-40	95-101	40-43	105-110
58/XXL	230-250	104-113	6'1-6.3	185-190	48-50	121-127	39-42	99-106	42-45	110-115
25/MS	150-170	68-77	5'7-5'9"	171-176	40-42	100-106	31-34	80-86	34-38	90-96
26/LS	175-195	79-88	5'8-5'10"	173-178	42-44	106-111	33-36	85-91	35-39	95-100
27/XLS	190-210	86-95	5'9-5'11"	177-181	44-46	111-116	35-38	90-96	38-41	100-106
28/XXLS	205-225	93-102	5'10-6'1"	178-186	46-48	116-121	37-40	95-101	40-43	105-110
29/3XLS	220-240	100-109	6'1-6.3"	185-190	48-50	121-127	39-42	99-106	42-45	110-115

US/EURO	XXS/44	XS/46	S/48	M/50	L/52	XL/54	XXL/56
WAIST CM	68-73	71-78	76-83	81-88	86-93	91-98	96-103
WAIST INCH	26-28	28-30	30-32	32-34	34-36	36-38	38-40

US/EURO	XS/34-36	S/36-38	M/38-40	L/>40
WAIST CM	66-71	71-76	76-81	81-86
WAIST INCH	26/28	28/30	30/32	32/34

GROMMET XXXS	20,5-22 52-56
GROMMET XXS	22-23,5 56-60
GROMMET XS	23,5-25 60-64
GROMMET S	25-26,5 64-67

SIZE	HEIGHT (cm)	WEIGHT (Kg)	NECK (cm)	CHEST (cm)	WAIST (cm)
XXXL	190	100-110	44	115	98
XXL	185	95-110	43	110	96
XLT	185	90-95	43	110	93
XL	180	90-95	42	105	91.5
LT	180	80-85	42	105	86
L	180	80-85	40.5	100	86
LS	175	80-85	40.5	100	86
MT	180	70-80	40.5	100	81
M	175	65-70	39	96	81
MS	170	65-70	39	96	81
S	170	65-70	38	92	78
XS	165	55-60	36	90	76.5

	WEIGHT		HEIGHT		CHEST		WAIST		HIPS
SIZE	pound	kilogram	ft	cm	inch	cm	inch	cm	inch	cm
34/XS/4	99-120	45 - 54	5'3"-5'6"	162 - 168	23-32	60 - 81	22-25	58 - 63	29-32	76-84
36/S/6	105-125	48 - 57	5'4"-5'7"	165 - 170	31-33	79 - 84	24-25	61- 64	30-33	77-85
36/ST/6T	109-130	50 - 59	5'5"-5'8"	167 - 172	31-33	79 - 84	24-25	61- 64	30-33	77-85
38/M/8	109-130	50 - 59	5'5"-5'9"	168 - 174	32-34	82 - 87	25-27	63 - 68	31-34	79-86
38/MT/8T	120-140	54 - 64	5'8"-5'10"	173 - 179	32-34	82 - 87	25-27	63 - 68	31-34	79-86
40/L/10	120-140	54 - 64	5'8"-5'9"	171 - 177	33-36	86 - 91	26-28	64 - 71	32-34.5	81-87
40/LT/10T	130-150	59 -68	5'9"-5'11"	175 - 181	33-36	86 - 91	26-28	64 - 71	32-34.5	81-87
42/XL/12	130-150	59 -68	5'8"-5'10"	173 - 179	35-37	89 - 95	28-30	71 - 76	33-35	84-89
42/XL/T12T	135-155	61 - 70	5'9"-6'0"	177 - 183	35-37	89 - 95	28-30	71 - 76	33-35	84-89
44/XXL/14	141-160	64 - 73	5'9"-5'11"	175 - 181	36-39	94 - 99	29-31	73 - 78	33-36	85-90
46/3XL/16	160-180	73 - 82	5'6"-5'8"	181 - 185	37-40	97 - 102	31-33	78 - 84	35-37	88-94

			HEIGHT		CHEST		WAIST		HIPS
SIZE	AGE	pound	ft	cm	inch	cm	inch	cm	inch	cm
4XS/86-98	2-3 YR	28-38	2'11"-3'1.5"	88 - 95	19-21	48-53	18-20	46-51	19-21	48-53
3XS/98-104	3-4 YR	32-40	3'1,5"-3'5"	95 - 103	20-22	51-56	19-21	48-53	20-22	51-56
2XS/110-116	4-5 YR	36-44	3'5"-3'7,5"	103 - 110	21-23	53-58	20-22	51-56	21-23	53-58
XS/116-122	5-6 YR	40-50	3'10"-4'2"	118 - 126	23-25	58-63	21-23	53-58	23-25	58-64
S/128-134	7-8 YR	45-60	4'2"-4'4"	126 - 133	24-26	62-67	22-24	55-60	25-27	64-68
M/140	9-10 YR	50-70	4'4"-4'8"	133 - 141	25-28	66-71	23-25	57-62	27-29	68-74
L/146	10-11 YR	28-38	4'7"-4'10"	140 - 147	28-30	71-76	24-30	59-65	28-30	71-76
XL/152-158	11-12 YR	32-40	4'10"-5'1"	147-155	29-31	74-79	25-27	64-69	30-32	71-81
XXL/158-164	12-13 YR	36-44	5'1"-5'4"	155-162	31-33	79-84	27-33	69-74	32-34	81-86
XXXL/164-170	14-16 YR	40-50	5'4"-5'7"	162 - 170	33-35	84-89	33-35	71-76	34-36	86-91

RRD K4 Thruster set L

GUIA DE TALLAS NP

NEOPRENOS HOMBRE

NEOPRENOS MUJERE

JUNIOR

NIÑOS

ARNÈS

Impact Vests

CE Approved Vests

USCG (UL) Approved Vests

Men's Tops

Ladies Tops

Men's Boardshorts & Bottoms

Ladies Boardshorts & Bottoms

Men's / Ladies Boots

Boots Kids

Gloves

Helmet

PROLIMIT SIZE CHARTS

MENS WETSUITS

WOMENS WETSUITS

GROMMETS WETSUITS

MENS HARNESSES

WOMENS HARNESSES

GROMMETS HARNESSES

GUIA DE TALLAS RRD

MEN

WOMAN

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Ficha técnica

Opiniones

LOS CLIENTES QUE COMPRARON ESTE PRODUCTO TAMBIÉN HAN COMPRADO:

RRD Barracuda LTD V2 2018 surfboard

RRD Barracuda V2 2018 surfboard

Mejor precio garantizado sobre - RRD K4 Thruster set L

30 Días Derecho de devolución

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30 Días
Derecho de devolución

Mejor precio
Garantizado

Envío gratis
Pedidos superiores a 59.99 €

Pagos seguros
Cifrado SSL