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Tecnical data sheet monoring ARI K - M   Ari has developed a new MONORING K - M line, following the trend in the racing field in recent times, especially in XC field   Definitely it requires to be fully utilized in all its potentialities a good athletic preparation but we believe that it can be used by a great part of racers, also in the MARATHON field.   The most important feature of ARI K - M is that, differently from the classical transformations in monoring, the chainring using ARI K - M will be found exactly in the center of the rear cassette obtaining a perfect chain line in all conditions. The particularity is that the tooth are completely new and they have been designed to hold the chain even without the derailleur; in fact using the monoring, the front speed trigger on the left and the front derailleur can be removed with an important weight savings. Chainrings are available both in round and oval line, with par and odd teeth. Only to par teeth you will have SYNC ARI XX1 NARROW - WIDE shape which ensure a stronger hold of the chain and therefore it can be used without chain guide. Obviously it will be even more important, to avoid accidental falls of chain, that the chain length will have to be perfect and that the arm of the rear derailleur will have to be in perfect efficiency. The shape of the spider, of the chainring and the attack shape too, they have been designed to obtain the same great rigidity of all ARI spiderless . The application of ARI K - M is foreseen not only to our crankset ARI K1 but also to all the cranksets with replaceable spiders therefore CANNONDALE, S-WORKS, the complete SRAM line serie "X" and serie "S", RACE FACE 2015, CTK LIGHT 2015, FRM. ARI K - M  kit is composed of a spider with the specific attack for the crankset on which it will be mounted on, a chainring and a set of 4 special screws;it  is compatible with 10 and 11 speed cassettes. As for all  spiderless it will be supplied already assembled and ready to be fixed on the crankset. The range of teeth, as well as the range of colors available, it is always full to meet every need and it includes  from 28 to 36 teeth. For an extreme racing use or on bumpy terrains it is suggested to use a chain guide.   stay tuned !!!