Sram Red Axs E1 Power Meter Spider Dub - Direct Mount 50-37T (Bb Not Included): 172.5Mm

It’s the best tool to help you reach your best. The choice of our top professionals, our lightest, stiffest, and most accurate integrated power meter and chainring combo just got lighter with a new carbon crankarm construction. The SRAM power meter is accurate to +/-1.5% and isn’t affected by temperature changes, and the consistent 13-tooth gap on the rings ensures fast and reliable shifting. Not just unbeatable on performance, our integrated rings are also incredibly long-lasting. Plus we’re offering more crankarm lengths than ever before to ensure this crank works for you.

FEATURES

• 29 g lighter than previous generation
• Power meter is fully integrated into the chainring for lighter weight
• Power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride
• Measures right and left leg power balance
• X-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear
• Crisp and accurate front shifts
• DUB bottom bracket adds durability and simplicity
• 50/37T, 48/35T and 46/33T chainring combos available
• Available in 160, 165, 167.5, 170, 172.5, and 175 mm lengths

SPECIFICATIONS
Speeds 12
BB Compatibility All SRAM Road DUB BBs
Chainring Size 50/37T
Crank arm length 160mm, 165mm, 167.5mm, 170mm, 172.5mm, 175mm
Chainline 45.0mm
BB Spindle Interface DUB
Chainring material Aluminum
Guard No Guard
Bolt Circle Diameter (BCD) Direct Mount (DM)
Crank arm material Carbon
Colour (Crank arm) Natural carbon
Power meter Yes
Power Meter Type Spider