zoom Challenge Valve Extensions
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|2 Valves 1 Key||
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10+ In stock, ready for despatch now
Set of 2 x 42mm valve extensions for inner tubes and tubulars. Includes tool.
Top Features of the Challenge Valve Extensions
- Valve: Presta
- Length: 42mm
- Weight: Each 4g
|Wheel Size:||700c (622)|
About Road Race Tyres
These tyres are for racing style bikes that use clincher/hooked rims, these are the most common fitment and hook onto the rim and require an inner tube. There is a wide choice of tyres within this category and the right choice is important. Lighter tyres will accelerate quickly, but will be more prone to punctures so getting a balance is extremely important. If you require a tyre for all round use look for something with puncture protection, an average TPI(Threads Per Inch) and average weight. If you require a fast tyre and speed is the only thing that matters look for a low weight folding tyre with high TPI. If durability is your priority and speed is not so important look towards the puncture resistant tyres and consider going for a wider tyre, these will be less prone to punctures and offer a bit more comfort. For wet road conditions a triple compound or winter tyre is a good choice, these use a softer compound on the cornering surface to maximise grip.
About the Challenge brand
In 2003 Challengetech created its own brand “Challenge”. Challenge, as the word says, wants to point out how difficult and exciting it is to keep the tradition of high quality products, created with obstinacy, with the steady research of special materials and through handcrafted processes. Since the 2000s, Challengetech has being producing tubulars for other brands, thanks to the constant use of these products in the professional cycling.
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- Standard Delivery: Estimated Delivery within 8 working days – $15.01
Spend $82.60 more to qualify for free delivery
- Priority International Delivery: Estimated delivery within 6 working days - $22.14
- Tracked Courier Delivery: Estimated delivery within 4 working days - $35.63
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