Realizzazione Corone per Strada e Mtb
you remove from your Shimano XTR M9000 11speed cassette 11/40 the cogs 17T and 19T and you replace them with the ARI 18T cog given as spare component and you add, after the original 40T cog, the ARI spare cog choosen, without any additional modification on your bike   teeth available are: 44T 45T 46T and 48T   replacement is easy and fast - see video attached material used is hard anodized ERGAL 7075T6 all range of colors is available in our color chart at link   Available colors   weight of 44 teeth cog is  98 grams weight of 45 teeth cog is 104 grams weight of 46 teeth cog is 111 grams weight of 48 teeth cog is 122 grams
40T And 42T ARI cog for shimano      and sram rear cassette     mounting instruction video
Derailleur adjustment photo
Adjustment instructions of rear derailleur with larger cogs
Instructions for the correct adjustment of rear derailleur with larger cogs   In the distance adjustment of the rear derailleur from the teeth of the larger cog you have to take extra care that the inner cage of the derailleur itself, especially during descent, does not touch the gear tooth.  In the photo 1 it is shown the inner side of the cage marked by the tooth of the cog because the adjustment WAS NOT CORRECT  In the photo 2 it is highlighted interference between the internal cage of the front derailleur and the end of the teeth of the cog; also in this case the adjustment  WAS NOT CORRECT  N.B. ATTENTION, THE INTERFERENCE OF THE DERAILLEUR CAGE WITH THE TEETH OF THE COG CAN CAUSE THE BREAKING OF THE TEETH OF THE COG
Suggestions for length regulation of chain with monoring
Suggestions for the correct and efficient regulation of the chain lengh with monoring To avoid accidental falls of the chain with the use of  monoring  without guidechain it is necessary that the lenght of the chain itself is perfect. With the chain positioned on the largest rear cog, as is highlighted in the photo, the movement of the front derailleur should be approximately between 4 and 5 mm
NB     Ari cogs are suitable both for free design hub (hub 1) than to that with support (hub 2)than to that with support (hub 2)
Hub Compatibily
Hub 1
Hub 2
Here how it shifts the 46 teeth Ari cog for  Shimano 11 speed cassette
Derailleur adjustment with ARI cog for Shimano cassette    On completion of the mounting of ARI cog for Shimano cassette follow these simple instructions to adjust the derailleur 1) Place down one of the teeth of ARI cog perpendicular to the ground  (do not choose a      milled tooth) 2) Place upward one of the teeth of the upper pulley of the derailleur always       perpendicular to the  ground 3) By turning the adjusting screw of the derailleur (photo 1) adjust the distance      between the teeth at an height between 6 and 7mm for 44t, 45t and 46t cogs and      between 3 and 4mm for 48t cog  (photo 2) NB Screw L of the rear derailleur has to be generally  unscrewed of one-half turn, this allow the chain to shift up efficiently on the cog added  (photo 3)  
photo 1
photo 2
photo 3
ARI spare/upgrade cog for Shimano XTR M9000 11/40 11speed cassette   cod. 304  € 110,00