STONE 110 BCD Narrow-Wide Chainring with 4 mm Inner Offset for 1X Road Bike Conversion (38–58T, 9–12 Speed)
Important Notice
This chainring features a 4 mm inner offset and is designed for road bike frames only. It helps improve chainline when converting a road bike from 2X to 1X.
Chainrings of 50T and above are not suitable for gravel bike frames, as the chainring may touch the frame.
This chainring is not compatible with Shimano 9200P / 8100P surface-mounted power meter crank arms, SRM power meters, 2X drivetrains, or SRAM AXS Flattop chains.
Product Specifications
| Item | Details |
|---|---|
| Brand | STONE |
| Product Type | Road Bike Chainring |
| BCD | 110 BCD |
| Offset | 4 mm inner offset |
| Drivetrain | 1X only |
| Tooth Profile | Narrow-wide |
| Speed Compatibility | 9–12 speed |
| Material | Aluminum 7075-T6 |
| Processing | Full CNC machining |
| CNC Precision | 0.03 mm |
| Color | Black |
| Application | Road bike frame only |
Key Features
- 4 mm inner offset design
- Helps improve chainline when converting a road bike from 2X to 1X
- Designed for road bike frames only
- 110 BCD mounting standard
- Narrow-wide tooth profile for better chain retention
- CNC machined from 7075-T6 aluminum
- Suitable for 1X single-chainring setups only
- Includes chainring bolts
About the 4 mm Inner Offset
This chainring has a 4 mm inner offset. It positions the chainring closer to the center of the rear cassette, producing a better chainline for 1X road bike setups.
Road Bike Frame Only
This inner-offset chainring is designed for road bike frames only and is not suitable for gravel bike frames. On many gravel frames, the inward offset may cause the chainring to touch or hit the frame. Please check your frame clearance before purchase.
Compatible Cranks
This chainring fits many Shimano 110 BCD 4-arm road cranks, including:
- Shimano Tiagra 4700
- Shimano FC-5800
- Shimano FC-6800
- Shimano Dura-Ace 9000
- Shimano 105 R7000
- Shimano Ultegra R8000
- Shimano Dura-Ace R9100
- Shimano 105 R7100
- Shimano Ultegra R8100
- Shimano Dura-Ace R9200
Compatible Power Meter Spiders
This chainring supports compatible power meter spiders such as:
- Magene
- Sigeyi
- Xcadey
Please confirm that your power meter spider uses the correct 110 BCD 4-arm road bike mounting standard before ordering.
Not Compatible With
This chainring cannot be used with the following:
- Shimano 9200P crank arm with surface-mounted power meter
- Shimano 8100P crank arm with surface-mounted power meter
- Other crank arms with surface-mounted power meters
- SRM power meters
- Gravel bike frames
- 2X drivetrain setups
- Front derailleur shifting
- SRAM AXS Flattop chains
Chain Compatibility
Directly Compatible
All 9–11 speed chains from any brand can be used directly.
Shimano 12-Speed Chain Notice
If you use a Shimano 12-speed chain, replace the original Shimano quick link with another brand quick link, such as KMC or YBN. The original Shimano 12-speed quick link is too narrow and may not fit properly.
SRAM AXS Flattop Chain Notice
This chainring does not support the SRAM AXS Flattop chain.
Size, Diameter & Weight
| Size | Diameter | Approx. Weight |
|---|---|---|
| 38T | 162 mm | 65 g |
| 40T | 169 mm | 79 g |
| 42T | 178 mm | 88 g |
| 44T | 186 mm | 97 g |
| 46T | 194 mm | 105 g |
| 48T | 202 mm | 116 g |
| 50T | 210 mm | 126 g |
| 52T | 219 mm | 138 g |
| 54T | 226 mm | 148 g |
| 56T | 235 mm | 161 g |
| 58T | 242 mm | 172 g |
Weights may vary slightly between production batches.
Package Includes
- 1 × Chainring
- 4 × Chainring bolts
Before Ordering, Please Check
To avoid compatibility problems, please confirm the following before purchase:
- Your bike is a road bike frame, not a gravel frame.
- Your crank is compatible with 110 BCD 4-arm road chainrings.
- Your bike has enough frame clearance for a 4 mm inner offset chainring.
- Your drivetrain is 1X only.
- You are not using Shimano 9200P / 8100P surface-mounted power meter crank arms.
- You are not using an SRM power meter.
- If using a Shimano 12-speed chain, you can replace the original quick link with a KMC or YBN quick link.
