SRAM X-Sync Steel Direct Mount Chainring - SRAM Direct Mount - 3mm Boost - Round - Grey - 28T YGroup_7421788422189 BR-M810 - Saint

BR-M810 - Saint

one 16g CO2 cartridge

crystals are also larger

The JetBlack Z1 PRO Fluid is an award winning trainer and like all JetBlack trainers

but which weighs 100g more than the standard version

SRAM X-Sync Steel Direct Mount Chainring - SRAM Direct Mount - 3mm Boost - Round - Grey - 28T YGroup_7421788422189 BR-M810 - SaintGenuine, budget replacement chainrings for SRAM direct mount compatible cranks. By making the chainring from steel, SRAM were able to bring the price of their X Sync technology down to a whole new level. As a bonus, these also last substantially longer than the alumium chainrings, they do weight a bit more though. Works great for 10 or 11 speed.