Sram Red AXS E1 Power Meter DUB Direct Mount Aero 1x12-speed road bike crankset

The Sram Red AXS E1 Power Meter Spider DUB Direct Mount Aero 1x12v is designed for speed. There’s a good reason why it has just a single chainring. Lighter, more aerodynamic and stiffer, it simply performs better. This power meter offers an accuracy of +/- 1.5% and is unaffected by temperature variations, ensuring reliable measurements on every ride. It also has the unique feature of independently measuring the power output of each of your legs.

The power meter is fully integrated into the chainring for minimal weight and enhanced accuracy, whilst the hollow carbon fibre cranks are ultra-light, weighing 29 g less than the previous generation. Combined with the DUB bottom bracket for greater simplicity, durability and stiffness, it delivers exceptional performance on the road.

Technical specifications:

- Crank lengths (in mm): 165, 167.5, 170, 172.5, 175
- Chainring: 50
- Carbon fibre cranks
- X-SYNC technology: Alternating wide and narrow teeth to ensure chain retention
- Direct-mount chainring
- Aerodynamic
- Power accuracy 1.5%
- Right leg, left leg measurement