Road racers and fast group riders on SRAM AXS who ride mostly flat or rolling terrain and want close gear steps.
The SRAM Force XG-1270 is the Force-level cassette for SRAM's 12-speed AXS road groups. The 10-28T version is the tightest option in the range, running 10-11-12-13-14-15-16-17-19-21-24-28.
That's one-tooth steps all the way from 10 to 17, which is where you spend most of your time in a bunch or on a flat time trial. SRAM's X-Range idea uses the 10T small cog to give a wide spread with smaller chainrings up front.
It fits the XDR driver body only and runs with SRAM's Flattop 12-speed chain. Mini Cluster construction keeps it light and stiff.
Close ratios
One-tooth jumps from 10T to 17T.
X-Range
10T start gives a wide spread with smaller rings.
Mini Cluster
Lighter and stiffer construction.
XDR fit
Mounts directly on SRAM's XDR driver.
Cassette
Compatibility
X-Range gearing
A 10-tooth smallest cog allows a wider range with smooth steps between gears.
Mini Cluster construction
Groups of cogs are joined together to cut weight and add stiffness and durability.
Great for
Maybe not for
Needs an XDR driver body on the rear hub and a SRAM 12-speed Flattop chain. Check your rear derailleur's maximum cog if you run something other than SRAM AXS road.
Match your chain
A new cassette on an old, stretched chain will skip. If your chain is past 0.5% wear, replace it at the same time.
Lockring torque
Use a standard cassette lockring tool and tighten to the torque printed on the lockring. The XDR body is longer than a standard freehub, so there is no spacer to fit.
Drivetrains, brakes and suspension from Chicago.
SRAM was founded in Chicago in 1987, starting out with its Grip Shift twist shifter before growing into one of the big three component makers.
Today the SRAM family covers road, gravel and mountain drivetrains and brakes, plus RockShox suspension, Zipp wheels and TruVativ cranks and bottom brackets.
