Turn every pedal stroke into actionable data. The SRAM RED AXS Power Meter crankset puts race-proven, spider-based power measurement and SRAM's lightest road crankarms ever onto your bike, so you can train smarter and ride faster. This is the 172.5mm crank arm length with a 48/35T chainring combo.

Highlights

• Spider-based power meter with true left/right dual-leg balance
• Accurate to +/-1.5%, unaffected by temperature swings
• Ultra-light hollow carbon crankarms, 29g lighter than the previous generation
• 2x 12-speed X-Range gearing for a wide, smoothly stepped range
• User-replaceable CR2032 battery with ANT+ and Bluetooth connectivity
• DUB spindle for broad frame and bottom-bracket compatibility

Power you can trust

The power meter is built into the chainring spider, measuring force from both legs so you get genuine left/right balance rather than an estimate. Readings stay accurate to within +/-1.5% regardless of climate, and auto-zero keeps calibration simple. It transmits over both ANT+ and Bluetooth, so it pairs with virtually any head unit or training app.

Lightest road cranks SRAM has made

An optimised carbon layup gives these hollow carbon crankarms a 29g saving over the previous generation while keeping the stiffness you want when you put the power down. The aluminium 48/35T rings use SRAM's 8-bolt Direct Mount interface and X-Range tooth profiles for fast, reliable front shifts across the 12-speed cassette.

Compatibility and fit

This crankset runs a DUB spindle and works with all SRAM Road DUB bottom brackets. It is part of the 2x 12-speed SRAM RED eTap AXS road groupset and uses the 8-bolt Direct Mount chainring standard. Chainline is 45.0mm. This listing is the 172.5mm crank arm length; the 48/35T rings suit riders who want a versatile road range for both flats and climbs.