Crankset SRAM Red 1 D1 DUB 40T

Single-ring drivetrain simplifies functionality and reduces weight.

48 and 50t variants feature direct mount aero chainrings for better aerodynamics.

Non-aero chainrings can be installed with a single tool, making gearing changes a breeze.

SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control.

Laser-etched chainring finish is more durable.

DUB bottom bracket adds durability, simplicity and broad compatibility.

Can be upgraded to a power meter.

TECHNOLOGIES

DUB - The relationship between bottom bracket spindle and bearing is the core of DUB technology. It's where stiffness meets durability. We 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.

Exogram - Our hollow Carbon Construction starts in the crank arm and extends into the crank's spider, maximizing the stiffness to weight ratio.

X-SYNC - SRAM X-SYNC 1x chainrings provide the highest level of performance and durability. The SRAM X-SYNC tall square teeth edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best posible performance in muddy conditions, the X-SYNC chainrings have been designed with mud-clearing receses for the inner chain links and rollers. Engineered in Germany, X-SYNC rinsg are an integral part of the SRAM 1x drivetrain. Accept no imitation.

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. We completely reimagined road gearing for wider range, more useful and smoother gear progresion, as well as smarter shift settings - enabled by AXS. With X-Range, you're always in the right gear.