CST Inner Tube 12 1/2 x 2 1/4 Dunlop Valve 32mm

Name: Hollandbikeshop.com
Address: Molenweer 22, Wateringen, 2291NR, NL
Telephone: +31 (0)70 - 300 00 44

EAN 6933882568327
Brand: CST
Product Model: 163554

In Stock +/- 2 Business Days

Information
Technical Specifications
Manuals & Videos
Size Chart

A CST bicycle tube is predominantly made of Butyl rubber.
Butyl is a very elastic and airtight synthetic rubber.
This high elasticity CST tubes allows a wide range of different tire sizes to be covered.

Specifications:
Brand: CST
Wheel size (inch): 12
Valve type: Dunlop/Blitz valve
Valve length: 32 mm
Valve diameter: 7.7 mm
Maximum valve pressure 6 bar (Keep the maximum tire pressure in mind)

This inner tube is suitable for tires with INCH size:
12 x 1.75
12 x 1.90
12 ½ x 1.75
12 ½ x 1.90
12 x 2.00
12 x 1.95
12 ½ x 2 ¼
12 ½ x 2 ¼

This inner tube is suitable for tires with the ETRTO size:
47-203
50-203
54-203
57-203
62-203

INCH: 12 1/2 x 2 1/4
Valve Type: Holland 32 mm
Category: Inner Tube
Brand: Cheng Shin Tire
Type: 12

Brand: CST
Group: Inner Tube
Size: 121/2X21/4-210
Category: 070102
Specifications: DV 32MM - DUNLOP Valve
Article Packaging: Per Piece

User Manual

Hollandbikeshop.com Tire Chart

Which tire fits which rim?

The so-called ETRTO size (European Tire and Rim Technical Organisation) consists of two numbers:
the first is the width of the tire in millimeters and the second is the diameter of the tire in millimeters.
City bikes usually have tire size 37-622: a 37 mm width and a 622 mm diameter.
The tire width must match the rim width.
The following chart shows possible combinations of tire widths and rim widths according to ETRTO.

ETRTO Tire Size Chart
	ETRTO	Inch	French
12"	47-203	12 x 1.75
		12 x 1.90
		12 ½ x 1.75
		12 ½ x 1.90
	50-203	12 x 2.00
	54-203	12 x 1.95
	57-203	12 ½ x 2 ¼
	62-203	12 ½ x 2 ¼
14"	47-254	14 x 1.75
		14 x 1.90
	50-254	14 x 2.00
	40-279	14 x 1 ½	350 x 38B
	37-288	14 x 1 3⁄8	350 x 35A
		14 x 1 5⁄8 x 1 3⁄8
	40-288	14 x 1 5⁄8	350 x 38A
	44-288	14 x 1 5⁄8 x 1 3⁄8	350 x 42A
	47-288	14 x 1.75
	32-298	14 x 1 ¼	350 x 32A
16"	40-305	16 x 1.50
	47-305	16 x 1.75
		16 x 1.90
	50-305	16 x 2.00
	54-305	16 x 1.95
		16 x 2.00
	57-305	16 x 2.125
	40-330	16 x 1 ½	400 x 38B
	28-340		400 x 30A
	32-340	16 x 1 3⁄8 x 1 1⁄4	400 x 32A
	37-340	16 x 1 3⁄8	400 x 35A
	44-340	16 x 1 5⁄8
	28-349	16 x 1 1⁄8
	30-349	16 x 1.20
	32-349	16 x 1 ¼
		16 x 1.25
	35-349	16 x 1.35
	37-349	16 x 1 3⁄8
17"	32-357	17 x 1 ¼
	32-369	17 x 1 ¼
18"	28-355	18 x 1 1⁄8
	32-355	18 x 1.25
	35-355	18 x 1.35
	40-355	18 x 1.50
	42-355	18 x 1.60
	47-355	18 x 1.75
		18 x 1.90
	50-355	18 x 2.00
	37-387	18 x 1 ½
	28-390	18 x 1 1⁄8	450 x 28A
	37-390	18 x 1 3⁄8	450 x 35A
	55-390		450 x 55A
	57-390		450 x 55A
	37-400	18 x 1 3⁄8
20"	54-400	20 x 2 x 1 ¾
	23-406	20 x 0.90
	25-406	20 x 1.00
	28-406	20 x 1.10
		20 x 1 1⁄8
	32-406	20 x 1.25
	35-406	20 x 1.35
	37-406	20 x 1.40
		20 x 1 3⁄8
	40-406	20 x 1.50
	42-406	20 x 1.60
	44-406	20 x 1.50
	44-406	20 x 1.625
	47-406	20 x 1.75
	47-406	20 x 1.90
	50-406	20 x 2.00
	54-406	20 x 2.10
		20 x 2.00
	55-406	20 x 2.15
	57-406	20 x 2.25
		20 x 2.125
	60-406	20 x 2.35
	54-428	20 x 2.00
	40-432	20 x 1 ½
	37-438	20 x 1 3⁄8
	40-438	20 x 1 3⁄8 x 1 ½
	28-440		500 x 28A
	37-440		500 x 35A
	40-440	20 x 1 ½ NL	500 x 38A
	23-451	20 x 0.90
		20 x 7⁄8
	25-451	20 x 1.00
	28-451	20 x 1 1⁄8
	37-451	20 x 1 3⁄8 B.S.
22"	44-457	22 x 1.75
	44-484	22 x 1 5⁄8 x 1 ½
	25-489	22 x 1.00
	37-489	22 x 1 3⁄8 NL
	40-489	22 x 1 3⁄8 x 1 ½
	50-489	22 x 2.00
	28-490		550 x 28A
	32-490	22 x 1 3⁄8 x 1 1⁄4	550 x 32A
	37-490	22 x 1 3⁄8	550 x 35A
	47-498	22 x 1 3⁄8 x 1 1⁄4
	25-501	22 x 1.00 B.S.
	32-501	22 x 1 ¼
	37-501	22 x 1 3⁄8
24"	40-507	24 x 1.50
	44-507	24 x 1.625
		24 x 1.75
	47-507	24 x 1.75
		24 x 1.85
		24 x 1.90
	50-507	24 x 2.00
		24 x 1.90
		24 x 2.125
	54-507	24 x 2.10
	55-507	24 x 2.15
	57-507	24 x 2.25
		24 x 2.125
	60-507	24 x 2.35
	62-507	24 x 2.40
	23-520	24 x 0.90
		24 x 7⁄8
	44-531	24 x 1 5⁄8 x 1 1⁄2
	40-534	24 x 1 ½
	20-540	24 x ¾
	23-540	24 x 0.90
		24 x 7⁄8
	25-540	24 x 1.00
	30-540	24 x 1.20
	32-540	24 x 1 3⁄8 x 1 1⁄4
	37-540	24 x 1 3⁄8
	40-540	24 x 1 3⁄8 x 1 1⁄2
	22-541
	25-541		600 x 25A
	28-541		600 x 28A
	32-541	24 x 1 3⁄8 x 1 1⁄4 NL	600 x 32A
	37-541		600 x 35A
25"	57-520	25 x 2.25
26"	20-559	26 x 3⁄4
	23-559	26 x 0.90
		26 x 7⁄8
	25-559	26 x 1.00
	28-559	26 x 1.10
	30-559	26 x 1.20
	32-559	26 x 1.25
	35-559	26 x 1.35
	37-559	26 x 1.40
		26 x 1 5⁄8 x 1 3⁄8
	40-559	26 x 1.50
	42-559	26 x 1.60
	44-559	26 x 1.625
	44-559	26 x 1.75
	47-559	26 x 1.75
		26 x 1.80
		26 x 1.85
		26 x 1.90
	50-559	26 x 2.00
		26 x 1.90
		26 x 1.95
	54-559	26 x 2.10
		26 x 1.95
		26 x 2.125
	57-559	26 x 2.25
		26 x 2.125
		26 x 2.20
	60-559	26 x 2.35
	62-559	26 x 2.40
		26 x 2.50
	64-559	26 x 2.50
	65-559	26 x 2.60
	70-559	26 x 2.75
	75-559	26 x 3.00
	95-559	26 x 3.70
		26 x 3.80
	100-559	26 x 4.00
	115-559	26 x 4.50
	120-559	26 x 4.80
	20-571	26 x 3⁄4
	23-571	26 x 7⁄8	650 x 23C
	40-571	26 x 1 ½ CS	650 x 38C
		26 x 1 3⁄8 x 1 1⁄2 NL
	47-571	26 x 1 ¾	650 x 45C
			650 CS Confort
	54-571	26 x 2 x 1 ¾	650 x 50C
	20-590	26 x ¾	650 x 20A
	25-590	26 x 1.00	650 x 25A
	28-590	26 x 1 3⁄8 x 1 1⁄8	650 x 28A
	32-590	26 x 1 3⁄8 x 1 ¼	650 x 32A
	37-590	26 x 1 3⁄8	650 x 35A
	40-590	26 x 1.50	650 x 38A
		26 x 1 3⁄8 x 1 ½
	42-590	26 x 1 5⁄8	650 x 40A
	32-597	26 x 1 1⁄4
27"	40-609	27 x 1 ½
	20-630	27 x ¾
	22-630	27 x 7⁄8
	25-630	27 x 1.00
		27 x 1 1⁄16
	28-630	27 x 1 1⁄8
	32-630	27 x 1 ¼
	35-630	27 x 1 3⁄8
27.5"	28-584	26 x 1 1⁄8 x 1 1⁄2	650 x 28B
	32-584		650 x 32B
	35-584	27.5 x 1.35	650B
		26 x 1 3⁄8 x 1 1⁄2	650 x 35B
	37-584	27.5 x 1.40	650B
		26 x 1 1⁄2 x 1 3⁄8	650 x 35B
			650 Standard
	40-584	27.5 x 1.50	650B
		26 x 1 5⁄8 x 1 1⁄2	650 x 38B
	44-584	27.5 x 1.65	650B
		26 x 1 5⁄8 x 1 2⁄2	650 x 42B
			650B
			Semi-Confort
			650B ½ Ballon
	47-584	27.5 x 1.75	650B
	50-584	27.5 x 2.00	650B
	54-584	27.5 x 2.10	650B
		26 x 1 ½ x 2
	57-584	27.5 x 2.25	650B
	60-584	27.5 x 2.35	650B
	62-584	27.5 x 2.40	650B
	64-584	27.5 x 2.50	650B
	65-584	27.5 x 2.60	650B
	70-584	27.5 x 2.75	650B
	74-584	27.5 x 2.90	650B
	75-584	27.5 x 3.00	650B
28"	18-622	28 x ¾	700 x 18C
	19-622		700 x 19C
			700 x 19
	20-622	28 x ¾	700 x 20C
	22-622	28 x 7⁄8	700 x 22C
			700 x 22
	23-622	28 x 0.90	700 x 23C
		28 x 7⁄8
	24-622		700 x 24C
	25-622	28 x 1.00	700 x 25C
		28 x 1 1⁄16
	26-622		700 x 26C
	28-622	28 x 1.10	700 x 28C
		28 x 1 5⁄8 x 1 1⁄8
	30-622	28 x 1.20	700 x 30C
	32-622	28 x 1.25	700 x 32C
		28 x 1 5⁄8 x 1 ¼
	33-622	28 x 1.30	700 x 33C
	35-622	28 x 1.35	700 x 35C
	37-622	28 x 1.40	700 x 35C
		28 x 1 5⁄8 x 1 3⁄8
	40-622	28 x 1.50	700 x 38C
		28 x 1 5⁄8 x 1 ½
	42-622	28 x 1.60	700 x 40C
	44-622	28 x 1.625	700 x 42C
	47-622	28 x 1.75	700 x 45C
	50-622	28 x 2.00
		29 x 2.00
		28 x 1.90
	55-622	28 x 2.15
		29 x 2.15
	60-622	28 x 2.35
		29 x 2.35
	32-635	28 x 1 ½ x 1 1⁄8	770 x 28B
			700 x 28B
			700B Course
	40-635	28 x 1 ½	700 x 38B
		28 x 1 ½ x 1 5⁄8	700B Standard
	44-635	28 x 1 5⁄8 x 1 ½	700 x 42B
	28-642	28 x 1 5⁄8 x 1 ½	70