Elegant and secure direct-mount X-SYNC chainrings from the company that originated the 1x drivetrain for the ultimate in consistent chain control over the long haul.
MODEL ID: FC-RIV-1W-D1
FEATURES
- Direct mount chainrings in 38T through 46T
- DUB bottom bracket adds durability and simplicity
- Wide chainline crankset to fit the biggest gravel tires
- Longer DUB crank spindle accommodates both Road and MTB width frame bottom bracket standards for unmatched cross-compatibility across brands
- Compatible with 135, 142 and BOOST rear spacing
TECHNOLOGY
DUB
The relationship between bottom bracket spindle and bearing is the core of DUB technology. It’s where stiffness meets durability. SRAM took it a step beyond conventional thinking and made everything simpler—better integrating the relationship between chainring, crank, spindle and bottom bracket. It’s this approach to developing a complete system that equals better drivetrain performance.
X-RANGE
Road bikes are faster and more capable than ever before, and riders are expanding what’s possible with drop bar bikes. X-Range is gearing for today’s road riding. SRAM completely reimagined road gearing for wider range, more useful and smoother gear progression, as well as smarter shift settings—enabled by AXS. With X-Range, you’re always in the right gear.
SPECIFICATIONS
CRANK ARM LENGTH | 160mm, 165mm, 170mm, 172.5mm, 175mm |
---|---|
BB SPINDLE INTERFACE | DUB |
BB COMPATIBILITY | All SRAM Road WIDE DUB BBs |
SPEEDS | 12 |
CHAINRING MATERIAL | Aluminum |
BOLT CIRCLE DIAMETER (BCD) | Direct Mounts (DM) |
CHAINLINE | 47.5mm |
CHAINRING SIZE | 40T, 46T |
160mm / 40T 00.6118.612.008
165mm / 40T 00.6118.612.000
170mm / 40T 00.6118.612.001
172.5mm / 40T 00.6118.612.002
175mm / 40T 00.6118.612.003
160mm / 46T 00.6118.612.009
165mm / 46T 00.6118.612.004
170mm / 46T 00.6118.612.005
172.5mm / 46T 00.6118.612.006
175mm / 46T 00.6118.612.007