The Aeron TPU CX/Gravel ExtraLite Protect Inner Tube is designed for cross and gravel riders seeki...The Aeron TPU CX/Gravel ExtraLite Protect Inner Tube is designed for cross and gravel riders seeking a lightweight yet puncture-resistant solution. Its TPU construction ensures a low weight for improved acceleration and efficiency, while the reinforced protection layer guards against sharp debris and rough surfaces. This tube is compatible with a wide range of wheel sizes, including 650-700c and 27.5-29", and is available with either a 42mm or 65mm valve. At only 56g (42mm valve) or 57g (65mm valve), it offers excellent rolling efficiency without compromising on durability, making it an ideal choice for demanding off-road conditions.
Aeron CX/Gravel ExtraLite Protect Inner Tube (650B-700C x 32-52mm) - 42mm PrestaFree delivery in 1–3 days£20.43Visit shop →
Product Information
Full details
The Aeron TPU CX/Gravel ExtraLite Protect Inner Tube is for cross and gravel cyclists prioritizing speed and puncture resistance. Its key benefit is a significantly reduced weight for better acceleration and climbing, though it requires careful installation due to its thin material. This tube features TPU construction for low weight, a reinforced layer for protection against punctures, and compatibility with various wheel sizes and valve lengths.
All features
Model Part Number
AE-33310000
Brand
AERON
Extended Product Information
FAQs
What is TPU and why is it used?
TPU stands for Thermoplastic Polyurethane. It's used in this tube because it allows for a significantly lower weight and smaller packed size compared to traditional butyl rubber, while still offering good puncture resistance.
How much lighter is this tube than a standard butyl tube?
This Aeron TPU tube weighs approximately 56-57 grams, whereas a standard butyl tube for a similar size can range from 100 to 200 grams or more, making this tube roughly 50-70% lighter.
Can I repair a puncture in this TPU tube?
Yes, specialized TPU patches are available for repairing these tubes. However, ensure the tire is thoroughly inspected for the cause of the puncture, and patching is often considered an emergency fix rather than a permanent solution.
What is the recommended tire pressure range?
The recommended pressure depends on your tire, weight, and riding conditions. Always adhere to the maximum pressure specified by your tire and rim manufacturer. Consult typical CX/Gravel pressure guides for optimal performance and comfort.
Is this tube suitable for tubeless setups?
No, this is an inner tube designed for use with clincher tires in a traditional tube-and-tire system. It is not designed for or compatible with tubeless setups.
What is the difference between the 42mm and 65mm valve options?
The valve length refers to the length of the Presta valve stem. The 42mm is suitable for shallower rims, while the 65mm is for deeper rims to ensure the pump head can easily attach for inflation.
Troubleshooting
Tube won't inflate / slow leak
Check valve core is tightened (if applicable) and that the tube is not pinched between the tire bead and rim. Inspect the tire for sharp objects.
Tube deflates quickly after installation
Most likely a pinch flat due to improper installation. Carefully remove the tire and inspect the tube for damage. Ensure the tube was not caught between the tire bead and the rim during inflation.
Difficulty fitting tube into tire
Slightly inflate the tube to give it shape. Do not force it; ensure the tire bead is fully seated on the rim before inflating the tube to its final pressure.
Pros and Cons
Pros
Significantly reduces rotational weight, enhancing acceleration and climbing.
Offers good puncture protection against common trail hazards.
Provides excellent rolling efficiency due to its low mass.
Versatile compatibility with multiple wheel sizes.
Available with different valve lengths for wider rim compatibility.
Cons
Requires careful installation to avoid pinching the thin material.
May be less durable than heavier butyl tubes on extremely rough terrain.
Higher cost compared to standard butyl inner tubes.
TPU material can be more sensitive to heat during prolonged braking on descents (less common issue for CX/Gravel).
Setup, Compatibility & Care
Setup:
Ensure the tire is fully seated on the rim.
Lightly inflate the Aeron TPU tube to give it shape.
Carefully insert the tube into the tire, starting with the valve stem.
Work the tube evenly around the tire, ensuring no twists.
*Crucially*, check that the tube is not pinched between the tire bead and the rim. This is the most common cause of punctures with lightweight TPU tubes.
Inflate to your desired pressure. Do not over-inflate beyond tire or rim maximums.
Compatibility:
Wheel Sizes: Compatible with 650c, 700c, 27.5", and 29" wheels.
Tire Width: Suitable for tires typically used in CX and Gravel disciplines (e.g., 30mm - 50mm).
Rim Type: Works with standard clincher rims. Ensure your rim tape is in good condition.
Valve Type: Available with Presta valves in 42mm and 65mm lengths. Ensure the valve length is appropriate for your rim depth.
Care:
Store tubes away from direct sunlight and extreme temperatures.
Avoid exposing the tube to sharp objects or excessive heat (e.g., prolonged braking on steep descents can heat rims significantly).
After a puncture, inspect the tire thoroughly for the cause (thorn, glass, etc.) to prevent repeat flats.
TPU tubes can be repaired with specific TPU patches, but patching is often not recommended due to the material's properties and is best done sparingly for emergencies.