SRAM introduces direct-mount X-SYNC chainrings

New 1x11 rings increase gear range, reduce weight

SRAM is rolling out an expansive range of direct-mount chainrings for its 1x11 speed drivetrains. 

These CNC-machined aluminum direct-mount rings offer two important benefits over the four-bolt design employed thus far on XX1, XO1 and X1 cranks: increased gearing range and decreased weight. 

Curiously, SRAM opted to use two different bolt circle diameters for its three 11-speed mountain groups. The top-tier XX1 group uses a 76mm BCD, allowing riders to go as low as a 28t chainring. However, the 94mm BCD used on X01 and X1 limits the smallest chainring size to 30t.

The new sram direct-mount x-sync chainrings are compatible with xx1, x01 and x1:
The new sram direct-mount x-sync chainrings are compatible with xx1, x01 and x1:

The new direct-mount X-SYNC rings are compatible with all of SRAM's 1x11 mountain groups

This direct mount chainring option is compatible with XX1, X01 and X1-level cranksets and allows riders to select from a much broader range of tooth counts — everything from a climb-friendly 26t all the way up to a quad-killing 40t ring.

The second important benefit of SRAM’s new direct-mount rings is a reduction in weight. The claimed weight savings of the direct-mount rings ranges from 25-50g, depending on chainring size. 

One downside to this direct-mount approach is that — since the chainring bolts directly onto the crankarm spindle — the chainrings must be offered in dedicated versions for cranksets with 24mm (GXP)  and 30mm (BB30) spindles in order to get achieve the proper chainline. 

SRAM will offer its direct-mount x-sync chainrings in even tooth counts from 26-40t :
SRAM will offer its direct-mount x-sync chainrings in even tooth counts from 26-40t :

To view a compatibility chart for SRAM’s new direct-mount chainrings click here.  

Claimed weights for GXP chainrings: 61g (26t), 66g (28t), 68g (30t), 71g (32t), 76g (34t), 91g (36t), 101g (38t), 119 (40t)

Claimed weights for BB30 chainrings: 52g (26t), 58g (28t), 61g (30t), 66g (32t), 71g (34t), 82g (36t), 94g (38t), 106g (40t)    

Pricing: US$99 / £75 / AU$ TBA

Availability: 30t, 32t, 34t chainrings are available now; 26t, 28t, 36t, 38t, 40t rings will be available in April 2015.

Visit www.sram.com for more information. 

Josh has been riding and racing mountain bikes since 1998. Being stubborn, endurance racing was a natural fit. Josh bankrolled his two-wheeled addiction by wrenching at various bike shops across the US for 10 years and even tried his hand at frame building. These days Josh spends most of his time riding the trails around his home in Fort Collins, Colorado.
  • Discipline: Mountain, cyclocross, road
  • Preferred Terrain: Anywhere with rock- and root-infested technical singletrack. He also enjoys unnecessarily long gravel races.
  • Current Bikes: Trek Remedy 29 9.9, Yeti ASRc, Specialized CruX, Spot singlespeed, Trek District 9
  • Dream Bike: Evil The Following, a custom Moots 27.5+ for bikepacking adventures
  • Beer of Choice: PBR
  • Location: Fort Collins, CO, USA

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