Realizzazione Corone per Strada e Mtb
upgrade your sram xx cassette with ARI COGS For SRAM XX 10 speed 11/36 cassette Original 36teeth cog can be replaced with an ARI  cog with same teeth: you can put an ARI 36teeth, an ARI 38 teeth or an ARI 39 teeth without any modification on your bike Replacement is easy and fast (see videos attached) ARI 38 teeth and ARI 39 teeth cogs are particularly suggested to be used in Monoring (single speed) layout Material used is hard anodized ERGAL 7075T6 All rage of colours is available in the colours table in  web site Weight of 36 teeth cog is 56 grams (like the original) Weight of 38 teeth cog is 70 grams Weight of 39 teeth cog is 77 grams On request for cassette SRAM XX 11/32 spare part ARI 32 teeth and increased ARI 34 teeth cogs
peso pignone originale XX 36T
NB     Ari cogs are suitable both for free design hub (hub 1) than to that with support (hub 2)
Hub 1
Hub 2
On completion of the mounting of ARI cog for XX 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 (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 because the cassette is slightly more internal than it was originally (photo 3)
Photo 1
Photo 2
Photo 3
Foto 1 Foto 2
Hub Compatibily
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
ARI spare/upgrade cog for SRAM XX cassette
Derailleur adjustment instructions  with ARI cog for XX cassette
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cod. 118 € 85.00