Can I put these into tubeless tyres?

Yes they can be used in tubeless tyres if you wish to use a tube

Are these inner tubes suitable for 700 x 20/ 28

28 yes, range covered 25-32. I'd say too big for 20.

The photos show a schrader valve not a presta valve. Can you clarify the valve type and length?

The inner tube is available in both valve options with the Presta being a standard 45mm valve though 60mm and 80 mm options are available in presta.Steve

Is the inner core removable and how do I specify the length of the presta valve (a previous answer says there are options)?

I think the core is removable. The presta valve needs to clear the rim by approx. 30mm so you can connect the pump on. If you have a pump with the flexi end that screws on, this is not as critical. You need a longer valve if you have wheels with an more aero design. 60mm should cover most applications. Should you have to use the new tube, you can measure the length of the old valve!

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Continental Race 28 (700c) x 25/32C Presta Valve Inner Tube

Product ID: 48145678

Details

Brand
Continental
Item diameter
697
Material
Rubber
Valve type
Presta
Wheel size
28 Inches

📏42mm Presta valve length

⚖️Lightweight 139g tube

🚴‍♂️Fits 25-32C tires

₩16767

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Description

🚴‍♀️ Ride Ready, Race Ready: The Inner Tube That Keeps You Ahead

PREMIUM PRESTA VALVE - 42mm valve designed for easy inflation and compatibility with high-performance pumps.
ENGINEERED DURABILITY - Mould-cured and vulcanised for uniform roundness, delivering enhanced strength and puncture resistance.
LIGHTWEIGHT ADVANTAGE - At just 139 grams, it keeps your bike agile without compromising reliability.
TRUSTED CONTINENTAL QUALITY - Made in Germany with a 4.5-star rating from over 5,000 cyclists—join the elite riders who trust Continental.
PRECISION FIT FOR PERFORMANCE - Optimized for 700c road tires from 25 to 32C, ensuring a perfect seal and smooth ride.

The Continental Race 28 Inner Tube is a high-quality, lightweight replacement tube designed for 700c road bike tires sized 25 to 32C. Featuring a 42mm Presta valve, it offers easy inflation and compatibility with deep-section wheels. Manufactured in Germany with mould-cured and vulcanised rubber, it ensures uniform roundness for durability and strength, making it a top choice for serious cyclists seeking reliability and performance.

Specifications

ASIN	B008ZTM95C
Best Sellers Rank	326 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 4 in Cycling Tubes
Bike Type	Road Bike
Brand Name	Continental
Compatible Tire Width Maximum	32 Centimetres
Compatible Tire Width Minimum	25 Inches
Country Of Origin	Germany
Customer Reviews	4.5 4.5 out of 5 stars (5,272)
EU Spare Part Availability Duration	2 Years
Global Trade Identification Number	04019238556858
Included Components	no
Item Diameter	697 Millimetres
Item Type Name	Continental R28 Training Presta Inner Tube - Black, 700C x 25 - 32 C/42mm
Item Weight	4.94 Ounces
Item Width	25 Millimetres
Manufacturer	Continental
Manufacturer Part Number	TUC81921
Manufacturer Warranty Description	producer
Material Type	Rubber
Model Number	0181921
Number of Items	1
Size	700C x 25 - 32 C/ 42mm
Unit Count	1.0 count
Valve Length	42 Millimetres
Valve Type	Presta
Wheel Size	28 Inches

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₩16767

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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4 days ago

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