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I just bought a brand new Canyon Endurace SL from the Canyon factory and started ridding it for about 10 days. On the spec sheet is only 7.6 Kg so I was pretty confident when a friend lifted it to check the weight. My ego and pride scatter to pieces when he said it was rather on the heavy side. And he was right, it does feel way heavier than I can recall.

Back home I get the balance out and check it for myself, and it displays something like 8.7Kg.

So where does all this extra weight comes from? My pedals are less than 500g a pair according to Shimano, a 40g bottle cage, two 35g lights for safety and a speed counter on the from rim (no more than 40g I assume). That doesn't sum to more than a Kilo. Can water get caught in the frame and/or rims after a wet day or a thorough wash? Did Canyon deliberately lie on the specs? Can my bike sneak out and feed itself over grease and power gels overnight?

I guess it's just my brain playing tricks on me...

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    Did you actually weight the bike yourself to get to 7.6 kg? Manufacturer-measured weights are notoriously smaller than actual weight. Not that they lie, but most often it's without pedals, smallish frame, lightest tires, ... I think it's really a perception issue. – StefanS Sep 19 '18 at 8:46
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    What size is yours? What size do they specify the weight for? (if they don't it will be a small one). What do you weigh it as if you strip it down to the conditions they specify? How are you weighing it? Luggage scales would be the best common device, or stand on bathroom svcales holding it, then subtract your own weight measured immediately before/after. – Chris H Sep 19 '18 at 8:50
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    Is there food missing from your fridge? Most people think we lock our bikes to stop them being stolen but really it's to stop them snacking while we're not watching. – David Richerby Sep 19 '18 at 9:24
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    @DavidRicherby I'll check the fridge, but to be scientifically valid, I'll have to get rid of my wife (and daughter) to eliminate any potential interference. – Rwanou Sep 19 '18 at 9:44
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    Maybe an obvious question, but did you check the weight for (and did you receive) the correct model? The Endurance CF SL 7.0 is listed at 8.2kg, which adding pedals and accessories will come to your 8.7kg figure – Andy P Sep 19 '18 at 11:20
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There is some variance in the manufacturers' claimed weight. Due to slight differences in the manufacturing process of the individual components, it is possible that the claimed weight was legitimate. If they weighed the smallest frame available and mated it to the lightest set of the specified wheels, the lightest saddle, etc, they could produce a bike that is lighter than anything that would come down the normal assembly line. Many brands specify that they don't list weights because of these variations. Some brands actually advertise the weight but don't specify the details such as frame size, was the frame painted, was bar tape installed etc.

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When they measured the frame it might be a size "S" or even "XS" for display. If you do have a bigger frame, your disc rotor is likely to have an increase in size as well. Dirt and dust may also be a contributing factor.

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    As stated in the comments, Canyon usually gives the weight for a size M bike, and mine is S. Now, if you have some figures or stats about how much dust and dirt adds to a bike, I would be interested! – Rwanou Nov 7 '18 at 12:30
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    Larger frames use larger disc rotors? Are you sure about that? – David Richerby Nov 19 '18 at 22:47

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