STONE 110 BCD Round Narrow Wide Chainring 34T–72T for Shimano 105 R7100, Ultegra R8100 & Dura-Ace R9200 1x Road Cranksets (9–12 Speed)
Product Overview
This round narrow wide chainring is designed for Shimano 4-arm road cranksets, including R7100, R8100, R9200, R9100, R8000, and R7000. It is offered in sizes from 34T to 72T for 1x road bike setups and works with 9–12 speed chains.
Available Styles
- Hollow Style: 34–42T or 44–60T
- Aero Groove Style: 44–60T
- Aero Flat Style: 42–72T
Available Teeth Options
34T / 36T / 38T / 40T / 42T / 44T / 46T / 48T / 50T / 52T / 54T / 56T / 58T / 60T / 62T / 64T / 66T / 68T / 70T / 72T
Compatibility
This chainring is designed for Shimano 110 BCD 4-arm road cranksets and is suitable for 1x single chainring setups only.
Perfect Fit For
- Shimano 105 R7100
- Shimano Ultegra R8100
- Shimano Dura-Ace R9200
Also Compatible With
- Shimano Dura-Ace R9100
- Shimano Ultegra R8000
- Shimano 105 R7000
- Shimano 9000 Series
- Shimano Tiagra 4700
- Shimano FC-5800
- Shimano FC-6800
- 110 BCD 4-arm power meters
Setup Requirements
| Requirement | Details |
|---|---|
| BCD | 110 BCD |
| Drivetrain system | 1x only |
| Front derailleur | Not supported |
| 2x drivetrain | Not supported |
Important Compatibility Notice
This is a narrow wide tooth chainring designed for 1x drivetrains only. It cannot be used as an inner or outer chainring for 2x drivetrains and does not support front derailleur shifting.
Chain Compatibility
- Shimano road chain: 9 / 10 / 11 / 12 speed
- Shimano MTB chain: 9 / 10 / 11 / 12 speed
- SRAM road chain: 9 / 10 / 11 speed
- Not compatible with SRAM AXS 12-speed Flattop chain (contact us if you need AXS tooth)
Note for Shimano 12-Speed Users
For Shimano 12-speed chains, please replace the original Shimano 12-speed quick link with another brand’s 12-speed quick link, such as KMC, YBN, SUMC, or similar brands. The original Shimano 12-speed quick link may be too narrow for this chainring.
Material & Manufacturing
Made from high-strength Aluminum 7075-T651, this chainring delivers excellent stiffness, durability, and lightweight performance for road cycling.
Specifications
- Material: Aluminum 7075-T651
- Hardness: HB150
- Surface treatment: Anodized
- Processing: Full CNC machining
- CNC precision: 0.03 mm
- Thickness: 4 mm
- Color options: Black / Silver
- BCD: 110 BCD
- Teeth options: 34T–72T
- Weight: Approx. 24 g and above, depending on tooth size and style
Key Features
- Wide teeth range (34T–72T): Available from 34T to 72T in even-number teeth to suit different riding styles, cadence preferences, and gear setups.
- High-strength 7075 aluminum: Built with premium 7075-T651 aluminum for excellent strength, stiffness, and long-lasting performance.
- Full CNC machining: Precision CNC processing with 0.03 mm accuracy ensures a clean fit and smooth chain engagement.
- Narrow wide tooth design: Improves chain retention and helps reduce chain drop on 1x road bike drivetrains.
- Four style options: Available in hollow or aero designs, with black or silver color options.
Size & Weight Reference
| Teeth | Maximum Outer Diameter (mm) | Hollow Weight (g) | Aero Weight (g) |
|---|---|---|---|
| 34 | 146 | 43 | — |
| 36 | 154 | 55 | — |
| 38 | 162 | 65 | — |
| 40 | 169 | 77 | — |
| 42 | 178 | 80 | 89 |
| 44 | 186 | 92 | 99 |
| 46 | 194 | 99 | 109 |
| 48 | 202 | 109 | 116 |
| 50 | 210 | 116 | 127 |
| 52 | 219 | 123 | 139 |
| 54 | 226 | 129 | 150 |
| 56 | 235 | 142 | 164 |
| 58 | 242 | 152 | 176 |
| 60 | 250 | 161 | 190 |
| 62 | 257 | — | 231 |
| 64 | 265 | — | 244.9 |
| 66 | 273 | — | 259.7 |
| 68 | 281 | — | 275.8 |
| 70 | 289 | — | 290 |
| 72 | 298 | — | 310 |
Package Includes
- 1 × STONE Chainring
- 4 × Standard Aluminum Chainring Bolts
