Inner tubes -NEWBIE Question!
garyroberts
Posts: 869
in General Chat
Please can someone let me what inner tube i need. I have a trek roadbike with Bonntrager Race wheels and 700x23 tyres......when i look on wiggle i get various options.....what do i need to get...Presta 42mm 700x18-25 or some other type...please help! What does the 42mm mean?
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