SRAM Quarq RED E1 threaded-mount spider
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The SRAM Quarq RED E1 spider with Thread Mount is the foundation of a dual-sided power meter, designed for riders looking for reliable training measurements. The design is intended for 38T to 46T chainrings and aims to be lightweight and stiff without limiting the ability to change chainrings.
Claimed accuracy is +/-1.5%, even as weather conditions change, with 10K temperature compensation and automatic MagicZero calibration while you pedal. No cadence magnet is required. The CR2032 battery is user-replaceable, with a 200-hour runtime, and the system is waterproof to IPX7, up to 1 meter for 30 minutes. Bluetooth Low Energy and ANT+ connectivity. Before purchasing, check the DUB bottom bracket and 12/13-speed compatibility with your drivetrain.
| Chainring mount | Thread Mount |
|---|---|
| Chainring sizes | 38T-46T |
| Bottom bracket | DUB |
| Compatibility | 12/13-speed |
| Accuracy | +/-1.5% |
| Battery | Replaceable CR2032, 200 hours |
| Connectivity | Bluetooth Low Energy, ANT+ |
| Temperature compensation | 10K |
| Waterproof rating | IPX7, 1 m for 30 minutes |
| Calibration | Automatic MagicZero |
| Cadence magnet | Not required |
Ships in 5-6 business days.