Stone 64BCD Oval Narrow-Wide Chainring for Shimano XT M780/M785 & BMX 1x Cranks (24–28T, 9–12 Speed)
Key Specifications
This oval narrow-wide chainring is CNC-machined from high-strength aluminum and finished with a durable anodized coating, making it a dependable choice for 1x drivetrains. Check the specifications and compatibility details below before ordering.
Important Compatibility Note
The narrow-wide tooth profile is designed for 1x drivetrains only. It cannot be used as a 2x chainring and does not support a front derailleur.
Material & Construction
- Material: High-strength Aluminum 7075-T651
- Hardness: HB150
- CNC precision: 0.03mm
- Surface treatment: Anodized, high-speed CNC machined
- Thickness: 4mm
- Color: Black
- Bolt circle diameter: 64 BCD
Compatibility
| Category | Compatible | Not Supported |
|---|---|---|
| Cranks | Most chainring cranks, including Shimano XT M780 and M785, plus BMX cranks | Cranks without a 64mm BCD |
| MTB chains | 9, 10, 11, and 12 speed | — |
| SRAM road chains | 9–11 speed | SRAM AXS 12s Flattop chain |
| Shimano road chains | 9–12 speed | Original Shimano 12s road quick link (see notice below) |
If you need a tooth shape compatible with the SRAM AXS Flattop chain, send us a message to customize it; an extra surcharge applies.
Shimano 12-Speed Road Chain Notice
When using a Shimano 12-speed road chain, you must replace the original Shimano quick link with another brand’s 12-speed quick link (such as KMC, YBN, or SUMC). The Shimano 12s road chain quick link is too narrow for this chainring.
Weight by Tooth Count
| Tooth Count | Weight |
|---|---|
| 22T | 23g |
| 24T | 29g |
| 26T | 32g |
| 28T | 40g |
Package Contents
- 1 x chainring
- 4 x bolts
Before You Order
This chainring fits a 64mm BCD only. Please confirm your crank’s BCD size before placing your order.
