Product description

This inner tube is compatible with 27.5" diameter tyres, with a cross-section ranging from 1.90 to 2.50 with a 48 mm Presta valve.

27.5 x 1.90 to 27.5 x 2.50 Presta valve inner tube for 27.5" tyres.

DECATHLON

27.5x1.9-2.5 bike inner tube - presta

Dhs. 25.00

Size Guide

MEN’S

Tops

Size	Chest (in)	Waist (in)
XS	33.1 – 34.3	27.6 – 28.7
S	34.6 – 35.8	29.1 – 30.3
M	36.2 – 37.4	30.7 – 31.9
L	37.8 – 40.6	32.3 – 35.0
XL	40.9 – 44.5	35.4 – 39.4
2XL	44.9 – 48.4	39.8 – 43.7
3XL	48.8 – 53.1	44.1 – 48.4

Bottoms

Size	Low hip (in)	Waist (in)
XS	31.5 – 33.5	26.0 – 28.0
S	33.9 – 35.8	28.3 – 30.3
M	36.2 – 38.2	30.7 – 32.7
L	38.6 – 40.9	33.1 – 35.0
XL	41.3 – 43.7	35.4 – 38.2
2XL	44.1 – 46.5	38.6 – 41.3
3XL	46.9 – 49.6	41.7 – 44.5

HOW TO MEASURE:

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when you're looking straight ahead.

Chest: Wrap a tape measure around your back and measure the fullest part of your chest. Make sure it's straight and parallel to the floor. Look straight ahead, tighten the tape and breathe normally.

Waist: Wrap a tape measure around the narrowest part of your waist, above your belly button. Raise your head, tighten the tape and breathe normally.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

WOMEN’S

Tops

Size	Low hip (in)	Waist (in)
2XS	31.5 – 32.7	22.8 – 24.4
XS	33.1 – 34.3	24.4 – 25.6
S	34.6 – 35.8	26.0 – 27.2
M	36.2 – 37.4	27.6 – 28.7
L	37.8 – 40.6	29.1 – 33.1
XL	40.9 – 44.5	33.5 – 37.8
2XL	44.9 – 48.4	38.2 – 42.5

Bottoms

Size	Low hip (in)	Waist (in)
2XS	31.1 – 33.5	23.6 – 24.8
XS	33.5 – 35.4	25.2 – 26.8
S	35.4 – 37.8	27.2 – 28.7
M	37.8 – 40.2	29.1 – 31.1
L	40.2 – 42.5	31.5 – 33.9
XL	42.5 – 44.9	34.3 – 36.6
2XL	44.9 – 47.2	37.0 – 39.4

Bra

Size	Bust (in)	Underbust (in)
2XS	30.7 – 31.5	24.8 – 26.4
XS	31.5 – 33.5	24.8 – 28.3
S	33.5 – 35.4	26.8 – 30.3
M	35.4 – 37.4	28.7 – 32.3
L	37.4 – 39.4	30.7 – 34.3
XL	39.4 – 41.3	32.7 – 36.2
2XL	41.3 – 43.3	34.6 – 38.2

HOW TO MEASURE:

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when you're looking straight ahead.

Bust: Wrap a tape measure around your back and measure the fullest part of your bust. Make sure it's straight and parallel to the floor. Look straight ahead, tighten the tape and breathe normally.

Underbust: Directly below the bust. wrap a tape measure around the ribcage. Make sure it's straight and parallel to the floor. Raise your head, tighten the tape and breathe normally.

Waist: Wrap a tape measure around the narrowest part of your waist, above your belly button. Raise your head, tighten the tape and breathe normally.

Hips: Wrap a tape measure around the fullest part of your hips.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

KIDS’

Boys

Age	Height (in)	Chest (in)	Waist (in)	Low hip (in)
6 months	24.0 – 27.2	16.5 – 16.9	14.6 – 15.2	16.5 – 17.1
9 months	27.6 – 28.3	16.9 – 17.3	15.2 – 15.6	17.1 – 17.7
12 months	28.7 – 29.5	17.3 – 17.7	15.6 – 16.1	17.7 – 18.5
18 months	29.9 – 31.9	18.1 – 18.5	16.3 – 16.9	18.5 – 19.3
24 months	32.3 – 34.6	18.9 – 19.3	17.3 – 18.1	19.3 – 20.3
2 – 3 years	35.0 – 37.4	19.7 – 20.1	18.1 – 18.9	20.3 – 20.9
3 – 4 years	37.8 – 40.2	20.5 – 21.3	19.3 – 20.1	21.3 – 22.4
4 – 5 years	40.6 – 44.1	21.7 – 22.4	20.1 – 20.9	22.8 – 24.0
5 – 6 years	44.5 – 48.0	22.8 – 23.6	20.9 – 21.7	24.4 – 25.6
7 – 8 years	48.4 – 51.2	24.4 – 24.8	21.7 – 22.4	26.0 – 27.2
8 – 9 years	51.6 – 55.1	25.2 – 26.4	22.8 – 23.6	27.6 – 28.7
10 – 11 years	55.5 – 59.1	26.8 – 28.7	24.0 – 25.2	29.1 – 30.3
12 – 13 years	59.4 – 63.0	29.1 – 31.5	25.6 – 27.2	30.7 – 33.1
14 – 15 years	63.4 – 67.7	31.9 – 34.6	27.6 – 29.1	33.5 – 35.8

Girls

Age	Height (in)	Chest (in)	Waist (in)	Low hip (in)
6 months	24.0 – 27.2	15.4 – 16.9	13.4 – 15.2	15.4 – 17.1
9 months	27.6 – 28.3	16.9 – 17.3	15.2 – 15.6	17.1 – 17.7
12 months	28.7 – 29.5	17.3 – 17.7	15.6 – 16.1	17.7 – 18.5
18 months	29.9 – 31.9	18.1 – 18.5	16.3 – 16.9	18.5 – 19.3
24 months	32.3 – 34.6	18.9 – 19.3	17.3 – 18.1	19.3 – 20.3
2 – 3 years	35.0 – 37.4	19.7 – 20.1	18.1 – 18.9	20.3 – 20.9
3 – 4 years	37.8 – 40.2	20.5 – 21.3	19.3 – 20.1	21.3 – 22.4
4 – 5 years	40.6 – 44.1	21.7 – 22.4	20.1 – 20.9	22.8 – 24.0
5 – 6 years	44.5 – 48.0	22.8 – 23.6	20.9 – 21.7	24.4 – 25.6
7 – 8 years	48.4 – 51.2	24.4 – 24.8	21.7 – 22.4	26.0 – 27.2
8 – 9 years	51.6 – 55.1	25.2 – 26.4	22.8 – 23.6	27.6 – 28.7
10 – 11 years	55.5 – 58.3	26.8 – 28.0	24.0 – 24.8	29.1 – 31.9
12 – 13 years	58.7 – 62.6	28.3 – 31.9	25.2 – 26.4	32.3 – 35.0
14 – 15 years	63.0 – 65.4	32.3 – 33.9	26.8 – 28.0	35.4 – 36.6

HOW TO MEASURE:

Height:Stand against a wall, barefoot or in socks, heels pasted to the wall. Stand right, then hold a book or flat object on the top of your head. Block the book, mark the bottom edge of the book. Measure the distance from the floor to the mark.

Head:Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when your head is straight.

Hand:Hold a tape measure at the bend of the thumb. Wrap around your palm.

FOOTWEAR

Men's Footwear

US Size	Foot length (in)	EU Size	Foot length (cm)
6	9.6	38.5	24.5
6.5	9.6	39	24.5
7	9.8	39.5	25
7.5	10	40	25.5
7.5	10	40.5	25.5
8	10.2	41	26
8.5	10.4	41.5	26.5
9	10.4	42	26.5
9.5	10.6	42.5	27
9.5	10.8	43	27.5
10	11	43.5	27.5
10.5	11	44	28
11	11.2	44.5	28.5
11.5	11.2	45	28.5
11.5	11.4	45.5	29
12	11.6	46	29.5
12.5	11.6	46.5	29.5

Women's Footwear

US Size	Foot length (in)	EU Size	Foot length (cm)
4	8.25	34	20.8
4.5	8.5	34.5	21.3
5	8.7	35	22
5.5	8.9	35.5	22.5
5.5	8.9	36	22.5
6	9.1	36.5	23
6.5	9.3	37	23.5
7	9.3	37	23.5
7.5	9.4	38	24
7.5	9.6	38.5	24.5
8	9.6	39	24.5
8.5	9.8	39.5	25
9	10	40	25.5
9	10	40.5	25.5
9.5	10.2	41	26
10	10.4	41.5	26.5
10.5	10.4	42	26.5

Unisex Footwear

Women's / Men's US Size	Foot length (in)	EU Size	Foot length (cm)
W5 / M3.5	8.6	35	21.9
W5.5 / M4	8.9	36	22.5
W6 / M4.5	9.1	36.5	23
W6.5 / M5	9.3	37	23.5
W7 / M5.5	9.3	37.5	23.5
W7.5 / M6	9.4	38	24
W8 / M6.5	9.6	39	24.5
W8.5 / M7	9.8	39.5	25
W9 / M7.5	10	40	25.5
W9.5 / M8	10.2	41	26
W10 / M8.5	10.4	41.5	26.5
W10.5 / M9	10.4	42	26.5
W11 / M9.5	10.8	43	27.5
W11.5 / M10	11	43.5	27.5
W12 / M10.5	11	44	28
W12.5 / M11	11.2	44.5	28.5
W13 / M11.5	11.2	45	28.5
W14 / M12	11.6	46	29.5
W15 / M13	11.8	47	30
W16 / M13.5	12	48	30.5

HOW TO MEASURE:

Foot length:Stand against a wall, heels touching the wall. Put an object (e.g. book...) against your longest toe. Measure the length between the wall and the object. Repeat this process for the other foot. If the lengths are different, choose the largest.

ACCESSORIES

Headwear (Caps, Beanies, Hats)

US Size	Head (in)
2XS	18.5 – 19.7
XS	19.7 – 20.9
S	20.9 – 22.0
M	22.0 – 23.2
L	23.2 – 24.4

Helmets

US Size	Head (in)
2XS	17.3 – 19.3
XS	18.5 – 20.5
S	20.5 – 21.7
M	21.7 – 23.2
L	23.2 – 24.4

Gloves

Size	Palm perimeter (in)	Hand length (in)
2XS	7.0 – 7.3	6.3 – 6.6
XS	7.3 – 7.6	6.7 – 6.9
S	7.6 – 7.9	7.0 – 7.2
M	8.0 – 8.2	7.2 – 7.4
L	8.3 – 8.5	7.4 – 7.7
XL	8.6 – 8.9	7.7 – 7.9
2XL	8.9 – 9.2	8.0 – 8.1
3XL	9.2 – 9.5	8.2 – 8.4

HOW TO MEASURE:

Head:Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when your head is straight.

Hand:Hold a tape measure at the bend of the thumb. Wrap around your palm.

BIKES

Kids' Bikes

Bike size	Height (ft)
12"	2'5" – 3'0"
14"	3'0" – 3'5"
16"	3'5" – 3'11"
20"	3'11" – 4'5"
24"	4'5" – 5'1"

Road & Gravel Bikes

Bike size	Height (ft)
XS	5'1" – 5'5"
S	5'5" – 5'8"
M	5'8" – 5'11"
L	5'11" – 6'2"
XL	6'2" – 6'7"

Mountain Bikes

Bike size	Height (ft)
S	4'11" – 5'5"
M	5'5" – 5'9"
L	5'9" – 6'0"
XL	6'0" – 6'7"

Size Guide

MEN’S

Tops

Size	Chest (in)	Waist (in)
XS	33.1 – 34.3	27.6 – 28.7
S	34.6 – 35.8	29.1 – 30.3
M	36.2 – 37.4	30.7 – 31.9
L	37.8 – 40.6	32.3 – 35.0
XL	40.9 – 44.5	35.4 – 39.4
2XL	44.9 – 48.4	39.8 – 43.7
3XL	48.8 – 53.1	44.1 – 48.4

Bottoms

Size	Low hip (in)	Waist (in)
XS	31.5 – 33.5	26.0 – 28.0
S	33.9 – 35.8	28.3 – 30.3
M	36.2 – 38.2	30.7 – 32.7
L	38.6 – 40.9	33.1 – 35.0
XL	41.3 – 43.7	35.4 – 38.2
2XL	44.1 – 46.5	38.6 – 41.3
3XL	46.9 – 49.6	41.7 – 44.5

HOW TO MEASURE:

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when you're looking straight ahead.

Waist: Wrap a tape measure around the narrowest part of your waist, above your belly button. Raise your head, tighten the tape and breathe normally.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

WOMEN’S

Tops

Size	Low hip (in)	Waist (in)
2XS	31.5 – 32.7	22.8 – 24.4
XS	33.1 – 34.3	24.4 – 25.6
S	34.6 – 35.8	26.0 – 27.2
M	36.2 – 37.4	27.6 – 28.7
L	37.8 – 40.6	29.1 – 33.1
XL	40.9 – 44.5	33.5 – 37.8
2XL	44.9 – 48.4	38.2 – 42.5

Bottoms

Size	Low hip (in)	Waist (in)
2XS	31.1 – 33.5	23.6 – 24.8
XS	33.5 – 35.4	25.2 – 26.8
S	35.4 – 37.8	27.2 – 28.7
M	37.8 – 40.2	29.1 – 31.1
L	40.2 – 42.5	31.5 – 33.9
XL	42.5 – 44.9	34.3 – 36.6
2XL	44.9 – 47.2	37.0 – 39.4

Bra

Size	Bust (in)	Underbust (in)
2XS	30.7 – 31.5	24.8 – 26.4
XS	31.5 – 33.5	24.8 – 28.3
S	33.5 – 35.4	26.8 – 30.3
M	35.4 – 37.4	28.7 – 32.3
L	37.4 – 39.4	30.7 – 34.3
XL	39.4 – 41.3	32.7 – 36.2
2XL	41.3 – 43.3	34.6 – 38.2

HOW TO MEASURE:

Head: Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when you're looking straight ahead.

Underbust: Directly below the bust. wrap a tape measure around the ribcage. Make sure it's straight and parallel to the floor. Raise your head, tighten the tape and breathe normally.

Waist: Wrap a tape measure around the narrowest part of your waist, above your belly button. Raise your head, tighten the tape and breathe normally.

Hips: Wrap a tape measure around the fullest part of your hips.

Hand: Hold a tape measure at the bend of the thumb. Wrap around your palm.

KIDS’

Boys

Age	Height (in)	Chest (in)	Waist (in)	Low hip (in)
6 months	24.0 – 27.2	16.5 – 16.9	14.6 – 15.2	16.5 – 17.1
9 months	27.6 – 28.3	16.9 – 17.3	15.2 – 15.6	17.1 – 17.7
12 months	28.7 – 29.5	17.3 – 17.7	15.6 – 16.1	17.7 – 18.5
18 months	29.9 – 31.9	18.1 – 18.5	16.3 – 16.9	18.5 – 19.3
24 months	32.3 – 34.6	18.9 – 19.3	17.3 – 18.1	19.3 – 20.3
2 – 3 years	35.0 – 37.4	19.7 – 20.1	18.1 – 18.9	20.3 – 20.9
3 – 4 years	37.8 – 40.2	20.5 – 21.3	19.3 – 20.1	21.3 – 22.4
4 – 5 years	40.6 – 44.1	21.7 – 22.4	20.1 – 20.9	22.8 – 24.0
5 – 6 years	44.5 – 48.0	22.8 – 23.6	20.9 – 21.7	24.4 – 25.6
7 – 8 years	48.4 – 51.2	24.4 – 24.8	21.7 – 22.4	26.0 – 27.2
8 – 9 years	51.6 – 55.1	25.2 – 26.4	22.8 – 23.6	27.6 – 28.7
10 – 11 years	55.5 – 59.1	26.8 – 28.7	24.0 – 25.2	29.1 – 30.3
12 – 13 years	59.4 – 63.0	29.1 – 31.5	25.6 – 27.2	30.7 – 33.1
14 – 15 years	63.4 – 67.7	31.9 – 34.6	27.6 – 29.1	33.5 – 35.8

Girls

Age	Height (in)	Chest (in)	Waist (in)	Low hip (in)
6 months	24.0 – 27.2	15.4 – 16.9	13.4 – 15.2	15.4 – 17.1
9 months	27.6 – 28.3	16.9 – 17.3	15.2 – 15.6	17.1 – 17.7
12 months	28.7 – 29.5	17.3 – 17.7	15.6 – 16.1	17.7 – 18.5
18 months	29.9 – 31.9	18.1 – 18.5	16.3 – 16.9	18.5 – 19.3
24 months	32.3 – 34.6	18.9 – 19.3	17.3 – 18.1	19.3 – 20.3
2 – 3 years	35.0 – 37.4	19.7 – 20.1	18.1 – 18.9	20.3 – 20.9
3 – 4 years	37.8 – 40.2	20.5 – 21.3	19.3 – 20.1	21.3 – 22.4
4 – 5 years	40.6 – 44.1	21.7 – 22.4	20.1 – 20.9	22.8 – 24.0
5 – 6 years	44.5 – 48.0	22.8 – 23.6	20.9 – 21.7	24.4 – 25.6
7 – 8 years	48.4 – 51.2	24.4 – 24.8	21.7 – 22.4	26.0 – 27.2
8 – 9 years	51.6 – 55.1	25.2 – 26.4	22.8 – 23.6	27.6 – 28.7
10 – 11 years	55.5 – 58.3	26.8 – 28.0	24.0 – 24.8	29.1 – 31.9
12 – 13 years	58.7 – 62.6	28.3 – 31.9	25.2 – 26.4	32.3 – 35.0
14 – 15 years	63.0 – 65.4	32.3 – 33.9	26.8 – 28.0	35.4 – 36.6

HOW TO MEASURE:

Head:Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when your head is straight.

Hand:Hold a tape measure at the bend of the thumb. Wrap around your palm.

FOOTWEAR

Men's Footwear

US Size	Foot length (in)	EU Size	Foot length (cm)
6	9.6	38.5	24.5
6.5	9.6	39	24.5
7	9.8	39.5	25
7.5	10	40	25.5
7.5	10	40.5	25.5
8	10.2	41	26
8.5	10.4	41.5	26.5
9	10.4	42	26.5
9.5	10.6	42.5	27
9.5	10.8	43	27.5
10	11	43.5	27.5
10.5	11	44	28
11	11.2	44.5	28.5
11.5	11.2	45	28.5
11.5	11.4	45.5	29
12	11.6	46	29.5
12.5	11.6	46.5	29.5

Women's Footwear

US Size	Foot length (in)	EU Size	Foot length (cm)
4	8.25	34	20.8
4.5	8.5	34.5	21.3
5	8.7	35	22
5.5	8.9	35.5	22.5
5.5	8.9	36	22.5
6	9.1	36.5	23
6.5	9.3	37	23.5
7	9.3	37	23.5
7.5	9.4	38	24
7.5	9.6	38.5	24.5
8	9.6	39	24.5
8.5	9.8	39.5	25
9	10	40	25.5
9	10	40.5	25.5
9.5	10.2	41	26
10	10.4	41.5	26.5
10.5	10.4	42	26.5

Unisex Footwear

Women's / Men's US Size	Foot length (in)	EU Size	Foot length (cm)
W5 / M3.5	8.6	35	21.9
W5.5 / M4	8.9	36	22.5
W6 / M4.5	9.1	36.5	23
W6.5 / M5	9.3	37	23.5
W7 / M5.5	9.3	37.5	23.5
W7.5 / M6	9.4	38	24
W8 / M6.5	9.6	39	24.5
W8.5 / M7	9.8	39.5	25
W9 / M7.5	10	40	25.5
W9.5 / M8	10.2	41	26
W10 / M8.5	10.4	41.5	26.5
W10.5 / M9	10.4	42	26.5
W11 / M9.5	10.8	43	27.5
W11.5 / M10	11	43.5	27.5
W12 / M10.5	11	44	28
W12.5 / M11	11.2	44.5	28.5
W13 / M11.5	11.2	45	28.5
W14 / M12	11.6	46	29.5
W15 / M13	11.8	47	30
W16 / M13.5	12	48	30.5

HOW TO MEASURE:

ACCESSORIES

Headwear (Caps, Beanies, Hats)

US Size	Head (in)
2XS	18.5 – 19.7
XS	19.7 – 20.9
S	20.9 – 22.0
M	22.0 – 23.2
L	23.2 – 24.4

Helmets

US Size	Head (in)
2XS	17.3 – 19.3
XS	18.5 – 20.5
S	20.5 – 21.7
M	21.7 – 23.2
L	23.2 – 24.4

Gloves

Size	Palm perimeter (in)	Hand length (in)
2XS	7.0 – 7.3	6.3 – 6.6
XS	7.3 – 7.6	6.7 – 6.9
S	7.6 – 7.9	7.0 – 7.2
M	8.0 – 8.2	7.2 – 7.4
L	8.3 – 8.5	7.4 – 7.7
XL	8.6 – 8.9	7.7 – 7.9
2XL	8.9 – 9.2	8.0 – 8.1
3XL	9.2 – 9.5	8.2 – 8.4

HOW TO MEASURE:

Head:Wrap a tape measure around your head, above your eyebrows. Make sure it is parallel to the floor when your head is straight.

Hand:Hold a tape measure at the bend of the thumb. Wrap around your palm.

BIKES

Kids' Bikes

Bike size	Height (ft)
12"	2'5" – 3'0"
14"	3'0" – 3'5"
16"	3'5" – 3'11"
20"	3'11" – 4'5"
24"	4'5" – 5'1"

Road & Gravel Bikes

Bike size	Height (ft)
XS	5'1" – 5'5"
S	5'5" – 5'8"
M	5'8" – 5'11"
L	5'11" – 6'2"
XL	6'2" – 6'7"

Mountain Bikes

Bike size	Height (ft)
S	4'11" – 5'5"
M	5'5" – 5'9"
L	5'9" – 6'0"
XL	6'0" – 6'7"

Color : Unique

Size: PRESTA VALVE

Ref: 8320817

Variant

In stock

Home Delivery 4 - 6 Days

Up to 2-year warranty

Secure Payments

Product description

This inner tube is compatible with 27.5" diameter tyres, with a cross-section ranging from 1.90 to 2.50 with a 48 mm Presta valve.

27.5 x 1.90 to 27.5 x 2.50 Presta valve inner tube for 27.5" tyres.

Description

This inner tube is compatible with 27.5" diameter tyres, with a cross-section ranging from 1.90 to 2.50 with a 48 mm Presta valve.

How to choose your inner tube

Check the information indicated on the sidewall of the tyre (diameter and width). For example, 27.5 x 2.10 means that the tyre is 27.5 inches in diameter and 2.10 inches wide. On the tyre sidewall you will also find the dimensions in mm in ETRTO international units. For example, 50-584 means a tyre that is 50mm wide and has an inner diameter of 584mm (approx. 27.5 x 2.00).

Removing an inner tube

Remove the old inner tube using B'Twin tyre levers

Checks to carry out before installing an inner tube

Check the condition of your tyre and replace it if necessary. Make sure no objects are lodged in the tyre. Check the condition of your tyre rim strip. A rim strip that is even slightly bent can cause punctures. Check that your rim does not have any other issues that could damage your inner tube.

Mounting the inner tube

Watch our video before you start. Pre-inflate the inner tube slightly to avoid pinching. Insert the valve, making sure you are using the correct valve for your rim. Put the inner tube entirely inside the tyre so that it fits inside the rim. Take care not to pinch the inner tube when fitting.

Mounting the tyre

Start mounting the tyre at the valve. Finish mounting the tyre opposite the valve to avoid pinching the inner tube. Never mount your tyre with a tool or a tyre lever, as you risk pinching and puncturing the inner tube.

Inflating the tyre

Inflate your tyre carefully, to the pressure recommended by the manufacturer (visible on the tyre sidewall in PSI or bars, 1 bar = 14.51 PSI). Regularly check that your tyre is in the correct position as you inflate it.

Tip from the pros

To avoid punctures from pinching and for the best tyre performance, we recommend that you check your tyres and inflate them to the suggested pressure before every ride.

Weight:

240g

27.5 x 1.90 to 27.5 x 2.50 Presta valve inner tube for 27.5" tyres.

Compatibility

27.5" tyres, with a cross-section from 1.90 to 2.50. ETRTO 47/64 - 584

Waterproof

Optimised composition to ensure your inner tube has a good seal.

This inner tube is compatible with 27.5" diameter tyres, with a cross-section ranging from 1.90 to 2.50 with a 48 mm Presta valve.

How to choose your inner tube

Removing an inner tube

Remove the old inner tube using B'Twin tyre levers

Checks to carry out before installing an inner tube

Mounting the inner tube

Mounting the tyre

Inflating the tyre

Tip from the pros

To avoid punctures from pinching and for the best tyre performance, we recommend that you check your tyres and inflate them to the suggested pressure before every ride.

Weight:

240g

27.5 x 1.90 to 27.5 x 2.50 Presta valve inner tube for 27.5" tyres.

Compatibility

27.5" tyres, with a cross-section from 1.90 to 2.50. ETRTO 47/64 - 584

Waterproof

Optimised composition to ensure your inner tube has a good seal.

This inner tube is compatible with 27.5" diameter tyres, with a cross-section ranging from 1.90 to 2.50 with a 48 mm Presta valve.