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Adjustable angle stem. The true tool to find your right riding position.
Deda stems state that they have a 31.7mm clamp diameter but the precise measurement for the clamp diameter is 31.75mm which most manufacturers round up to 31.8mm but Deda round down to 31.7mm. So a Deda stem will fit 31.8mm handlebars.
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Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.
This stem is great works with most adapters, great to have if you like to adjust the height of your bars..
There is a quiet but growing trickle of adjustable stems for serious road use. Aimed at time triallists looking to find their optimum position, this stem has a lot to offer for anyone experimenting with handlebar height. Adjustment is laughably easy: loosen the 6mm bolt head three turns and the stem can be moved within a range of plus/minus 55 degrees. When you've chosen your position, tighten it three turns and you're ready to go, making for hassle-free, mid-ride adjustments.
Thanks mainly to cheap models, adjustable designs enjoy a reputation for having the rigidity of a blancmange, so I fitted it to my cyclo crosser and sought out some bridle path. Thundering through the rougher sections, leaning hard on the bars, I could detect a little flex but on tarmac this was negligible compared to a conventional stem. The belt and braces four-bolt face eliminates any chance of slippage (although the bolts on the test model benefited from a liberal greasing) and the classy black finish is understated and will just get treated to a bath of anodising remover when it looks tired. Ultimately, Deda has produced a great looking, versatile stem which has performed very well, although I have some reservations over the long term durability of the locking clamp assembly.