STONE 110BCD Double Chainring for SRM PM7/PM9 Power Meters (50/34T–54/40T)
The STONE double chainring is built for 110BCD 4-bolt road cranksets, including the spiders of the SRM PowerMeter PM7 and PM9. It is offered in round and aero designs, with four tooth combinations—50/34T, 52/36T, 53/39T, and 54/40T—so you can match the gearing to your riding style.
Important: Check Before Ordering
Before purchasing, please verify your mounting distance.
Both the SRM PM7 and SRM PM9 power meters may use either a 106.5mm or a 110.8mm mounting distance.
This means that knowing you have a PM7 or PM9 alone is not enough to confirm compatibility. Check that your current spider or chainring uses the same mounting distance as the version you order.
This listing includes the chainring only. The crankset and power meter are not included.
Compatibility
| Platform | Compatible Models |
|---|---|
| SRM 4-bolt power meter spiders | PM7 / PM9 |
| Shimano crank platforms | FC-5800 / FC-6800 / FC-4700 / FC-9000 |
| Other 110BCD 4-bolt power meter spiders | SIGEYI, XCADEY, Magene P505 |
Specifications
- Material: 7075-T651 aluminum alloy
- Material hardness: HB150
- Processing: high-precision CNC machining
- Machining tolerance: 0.03mm
- Surface finish: black anodized
- Type: round / aero road bike double chainring
- BCD: 110BCD
- Thickness: 4mm
Chain Compatibility
- 9–12 speed MTB chains
- 9–11 speed road bike chains
- 12-speed Shimano road bike chains
The default version does not support the SRAM AXS Flattop 12/13-speed chain. If you need an AXS-specific tooth profile, please contact us before ordering to arrange customization.
Model Options and Weight
106.5mm version
- 50/34T – 122.6g
- 52/36T – 134.7g
- 53/39T – 146.3g
- 54/40T – 152g
110.8mm version
- 50/34T – 122.3g
- 52/36T – 134.3g
- 53/39T – 146.2g
- 54/40T – 148.8g
Package Includes
- 1 x chainring
- 4 x bolts
Notes
- This page sells the chainring only.
- Crankset and power meter are not included.
- Before ordering, please confirm whether your mounting distance is 106.5mm or 110.8mm.
