SRAM XX SL Eagle T-Type Power Meter Spider for Threaded Mount Chainrings
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SRAM XX SL Eagle T-Type Power Meter Spider for Threaded Mount Chainrings Info
The SRAM XX SL Eagle T-Type Power Meter Spider for Threaded Mount Chainrings brings SRAM's top-tier power measurement to riders running Eagle Transmission cranks. Spider-based and purpose-built for the T-Type ecosystem, it delivers dual-sided power data with ±1.5% accuracy from a package light enough to forget it's there. This is SRAM's most accurate power meter, designed without compromise for riders who need reliable data on every ride.
The thread-on chainring mount is the defining design choice. Rather than conventional bolt-on attachment, SRAM's proprietary threaded interface between the spider and the T-Type chainring — available in 32–38t — reduces weight and eliminates the reliability concerns that small bolts under sustained load can introduce. Compatible with all Eagle Transmission 8-Bolt cranks via SRAM's DUB spindle standard, the spider fits cleanly into the existing drivetrain without adapters or compatibility headaches.
MagicZero handles automatic calibration while you ride, removing the pre-ride zero ritual entirely — the spider checks and recalibrates itself on the go, so data quality isn't dependent on the rider remembering to zero before a hard effort. AxCad measures cadence internally, with no external magnet to mount or lose. Battery life is 200 hours per user-replaceable CR2032 cell, keeping maintenance genuinely infrequent. The spider broadcasts simultaneously over Bluetooth LE and ANT+, pairing with any head unit on the market. For AXS ecosystem riders, it integrates directly with Flight Attendant — SRAM's automatic suspension and shifting coordination system — and is managed through the SRAM AXS app for battery monitoring, firmware updates, and configuration. IPX7 waterproofing (1m for 30 minutes) handles wet rides without concern.
Specs at a Glance
- Compatibility: Eagle Transmission 8-Bolt cranks
- Spindle Interface: DUB
- Chainring Mount: Proprietary thread-on (T-Type)
- Chainring Range: 32–38t
- Measurement: Dual-sided (total watts)
- Accuracy: ±1.5%
- Battery: CR2032, user-replaceable, 200-hour life
- Connectivity: Bluetooth LE + ANT+
- Waterproofing: IPX7 (1m / 30 min)
- AXS Compatible: Yes — Flight Attendant, AXS app
Design Benefits
- Thread-on mount eliminates bolt hardware: Lighter and more reliable than conventional bolt-on chainring attachment under sustained power.
- MagicZero automatic calibration: The spider recalibrates itself while you ride — no manual zero, no degraded data quality from skipped calibration.
- AxCad internal cadence: No external magnet required. One less thing to mount, check, or lose.
- Universal wireless: ANT+ and Bluetooth LE simultaneously — pairs with Garmin, Wahoo, Hammerhead, and any other head unit.
- Full AXS integration: Flight Attendant compatible and app-managed for battery status, firmware updates, and component configuration.
