SRAM RED D1 DUB Crankset 170mm 48/35 Direct Mount 12 Speed - Carbon Road Bike Crank | Cycling Gears Hub

Upgrade your road bike with the SRAM RED D1 DUB Crankset, a premium 12 speed carbon crankset engineered to deliver exceptional stiffness, lightweight performance, and precise shifting for serious road cyclists. Built as part of SRAM's flagship RED groupset, this crankset leverages a pivotal design innovation, smaller chainrings paired with a wider cassette range, resulting in smoother, faster front shifting and more useful overall gearing for today's riders.

X-Range Gearing Technology:
The SRAM RED D1 crankset features X-Range gearing technology, which shifts more of the gear range to the rear cassette while keeping the front chainrings smaller. This design gives riders a smoother gear progression with a consistent 13-tooth jump between the small and big rings, compared to the larger 16-tooth jump found on traditional compact cranksets or the 14-tooth jump on standard cranksets. The result is crisper, quicker front shifting with fewer compensating shifts needed in the rear, along with improved cadence and pedaling efficiency across varied terrain.

Direct Mount Chainring Design:
This crankset uses a unique direct mount chainring design, where the 48/35T chainrings are machined from a single block of lightweight aluminum and mounted directly to the crank arm rather than relying on a traditional spider-based system. This construction increases overall stiffness, reduces weight, and delivers faster, crisper, and more consistent shifting performance. The narrow-wide tooth profile on the chainrings further enhances chain retention and reduces the likelihood of chain drops, even when riding over rough or bumpy road surfaces.

DUB Bottom Bracket Technology:
The SRAM RED D1 Crankset is built around SRAM's DUB, or Durable Unified Bottom Bracket, design. This innovative approach means a single crank spindle is compatible with a wide range of bottom bracket standards, offering exceptional cross-compatibility across different frame designs. DUB cranks use a large diameter aluminum spindle measuring 28.99mm, slightly slimmer than traditional 30mm spindle designs, which allows for larger and more effective bearing seals. This results in improved durability, smoother rotation, and broader compatibility with SRAM Road DUB bottom brackets across various frame standards.

Build Quality and Materials:
Constructed with high-quality carbon fiber crank arms finished in a natural carbon colorway, this crankset combines lightweight construction with race-level stiffness for efficient power transfer with every pedal stroke. The aluminum direct mount chainrings add further durability while keeping overall weight to a minimum, making this an ideal component for competitive road racing, gran fondos, and performance-focused road riding.

Specifications and Compatibility:
This SRAM RED D1 DUB Crankset is available in a 170mm crank arm length with 48/35T chainrings, and is designed specifically for 12 speed road drivetrains for smooth, precise, and reliable shifting performance. It features a 45.0mm chainline and is compatible with all SRAM Road DUB bottom brackets, ensuring straightforward installation across a wide range of modern road bike frames. The crankset can also be upgraded to a power meter for riders who want to add power data tracking to their setup down the line.

Ideal Use Cases:
This crankset is ideal for road cyclists, racers, and gran fondo riders who want the performance benefits of SRAM's top tier RED groupset, including improved front shifting, reduced weight, and broad bottom bracket compatibility. It is a strong choice for anyone building or upgrading a high performance 12 speed road bike drivetrain, particularly for riders who value a smoother cadence and quicker gear transitions during competitive or long-distance riding.

Key Specifications Summary:
Brand: SRAM
Model: RED D1
Product Type: Crankset
Number of Speeds: 12 Speed
Crank Arm Length: 170mm
Chainring Size: 48/35T
Chainring Material: Aluminum
Chainring Mount: Direct Mount
Crank Arm Material: Carbon Fiber
Color: Natural Carbon
Bottom Bracket Interface: SRAM DUB
Spindle Diameter: 28.99mm
Chainline: 45.0mm
BB Compatibility: All SRAM Road DUB Bottom Brackets
Technology: X-Range Gearing, DUB Bottom Bracket Design
Power Meter Upgradeable: Yes
Intended Use: Road Racing and High Performance Road Riding

The SRAM RED D1 DUB Crankset combines lightweight carbon construction, precise direct mount chainrings, and SRAM's innovative DUB bottom bracket technology, making it an excellent upgrade for road cyclists seeking smoother shifting, broader compatibility, and race-proven performance in a 12 speed drivetrain.