STONE 110 BCD Aero Full-Cover Chainring for Shimano 105 R7100, Ultegra R8100 and Dura-Ace R9200 — 44–60T, CNC 7075-T651 Aluminum
The STONEDW 110 BCD full-cover chainring is designed for road, folding and gravel bikes built around Shimano 105 R7100, Ultegra R8100 or Dura-Ace R9200 cranksets.
Each ring is precision CNC machined from high-strength 7075-T651 aluminum alloy, pairing a clean aero-style look with high rigidity, accurate machining and dependable drivetrain performance. It is available from 44T to 60T in black or silver.
Key Features
- Full-cover aero design for a clean, distinctive appearance
- CNC machined from high-strength 7075-T651 aluminum alloy
- 4 mm plate thickness for improved rigidity
- Hard anodized surface for better corrosion and wear resistance
- Three versions matched to Shimano R7100, R8100 and R9200 cranksets
- Compatible with Shimano 9 / 10 / 11 / 12-speed chains and most SRAM non-Flattop chains
- Wide 44T–60T range for road, commuting and high-speed riding
- Precision-controlled flatness for smooth drivetrain operation
Product Specifications
| Specification | Details |
|---|---|
| Brand | STONEDW |
| Product Type | Full-Cover Single Chainring |
| BCD | Shimano 110 BCD 4-Bolt |
| Material | 7075-T651 Aluminum Alloy |
| Thickness | 4 mm |
| Manufacturing | CNC Machined |
| Surface Treatment | Anodized |
| Colors | Black / Silver |
| Tooth Options | 44T / 46T / 48T / 50T / 52T / 54T / 56T / 58T / 60T |
| Drivetrain Type | 1x Single Chainring |
| Recommended Use | Road / Folding Bike / Gravel |
| Chain Compatibility | 9-12 Speed; SRAM 9-12 Speed Non-Flattop |
| Crank Compatibility | Shimano 105 R7100 / Ultegra R8100 / Dura-Ace R9200 |
Compatibility: Three Versions Available
Each crankset uses a different mounting structure, so please select the correct version for your crankset before ordering.
| Version | Compatible Crankset | Product Code |
|---|---|---|
| F71 | Shimano 105 R7100 | BCD110R2-F71 |
| F81 | Shimano Ultegra R8100 | BCD110R2-F81 |
| F92 | Shimano Dura-Ace R9200 and R9100-P powermeter | BCD110R2-F92 |
Because the mounting structures of the three cranksets differ, do not choose your chainring by tooth count alone — always confirm the version matches your crankset.
F71 Version for Shimano 105 R7100
The F71 version is designed specifically for Shimano 105 R7100 cranksets.
| Teeth | Max. Diameter | Approx. Weight | Model |
|---|---|---|---|
| 44T | 186 mm | 104.7 g | BCD110R2-44T-F71 |
| 46T | 194 mm | 115 g | BCD110R2-46T-F71 |
| 48T | 202 mm | 125 g | BCD110R2-48T-F71 |
| 50T | 210 mm | 137.1 g | BCD110R2-50T-F71 |
| 52T | 219 mm | 147 g | BCD110R2-52T-F71 |
| 54T | 226 mm | 165.9 g | BCD110R2-54T-F71 |
| 56T | 235 mm | 168.1 g | BCD110R2-56T-F71 |
| 58T | 242 mm | 189.4 g | BCD110R2-58T-F71 |
| 60T | 250 mm | 204.5 g | BCD110R2-60T-F71 |
F81 Version for Shimano Ultegra R8100
The F81 version is designed specifically for Shimano Ultegra R8100 cranksets.
| Teeth | Max. Diameter | Approx. Weight | Model |
|---|---|---|---|
| 44T | 186 mm | 102.8 g | BCD110R2-44T-F81 |
| 46T | 194 mm | 113 g | BCD110R2-46T-F81 |
| 48T | 202 mm | 123.4 g | BCD110R2-48T-F81 |
| 50T | 210 mm | 135.7 g | BCD110R2-50T-F81 |
| 52T | 219 mm | 143.6 g | BCD110R2-52T-F81 |
| 54T | 226 mm | 164.5 g | BCD110R2-54T-F81 |
| 56T | 235 mm | 176.3 g | BCD110R2-56T-F81 |
| 58T | 242 mm | 191.1 g | BCD110R2-58T-F81 |
| 60T | 250 mm | 203.9 g | BCD110R2-60T-F81 |
Important: The F81 full-cover version cannot be installed on an R8100-P power meter crank.
F92 Version for Shimano Dura-Ace R9200 / R9200-P Power Meter
The F92 version is designed for Shimano Dura-Ace R9200 cranksets.
| Teeth | Max. Diameter | Approx. Weight | Model |
|---|---|---|---|
| 44T | 186 mm | 101.8 g | BCD110R2-44T-F92 |
| 46T | 194 mm | 113.5 g | BCD110R2-46T-F92 |
| 48T | 202 mm | 123.8 g | BCD110R2-48T-F92 |
| 50T | 210 mm | 134.5 g | BCD110R2-50T-F92 |
| 52T | 219 mm | 143.3 g | BCD110R2-52T-F92 |
| 54T | 226 mm | 162.4 g | BCD110R2-54T-F92 |
| 56T | 235 mm | 173.8 g | BCD110R2-56T-F92 |
| 58T | 242 mm | 188.6 g | BCD110R2-58T-F92 |
| 60T | 250 mm | 200 g | BCD110R2-60T-F92 |
The F92 chainring can also be installed on the Shimano R9200-P power meter crank after the required modification procedure.
High-Strength 7075-T651 Aluminum
The chainring is manufactured from high-strength 7075 aluminum alloy.
T651 temper treatment improves material hardness, dimensional stability and machining accuracy.
Before precision CNC machining, the plate is stress-relieved to reduce deformation during production and improve the final flatness of the finished chainring.
The result is a more accurate fit and more consistent drivetrain performance after installation.
Hard Anodized Surface
The chainring receives an anodized surface treatment to improve durability.
Anodizing forms a protective oxide layer on the aluminum surface, offering improved:
- Corrosion resistance
- Wear resistance
- Surface hardness
- Color stability
- Long-term durability
Both black and silver versions are available.
Precision CNC Machining
The tooth profile and mounting structure are CNC machined for improved dimensional accuracy.
The chainring features:
- Precision-machined tooth profiles
- Smooth transition radii
- Reinforced radial rib structure
- Controlled mounting dimensions
- High flatness accuracy
For the 60T version, factory flatness is controlled to below approximately 0.3 mm, and smaller tooth-count versions generally achieve even better flatness.
Chain Compatibility
This chainring works with Shimano 9 / 10 / 11 / 12-speed chains and most SRAM non-Flattop chains.
For SRAM original Flattop chains, please contact us to customize — a dedicated tooth profile is required and an extra fee applies.
Important Note for Shimano 12-Speed Chains
When using this chainring with a Shimano 12-speed chain, we recommend replacing the original Shimano quick link with a KMC 12-speed MissingLink.
For Shimano 9 / 10 / 11-speed chains, this change is normally not required.
Decorative Bolt Covers
Optional decorative bolt covers for single chainrings are available and must be purchased separately.
Recommended Tooth Count
The best tooth count depends on your riding style, terrain, cassette range and preferred cadence.
| Riding Style | Suggested Tooth Count |
|---|---|
| Road Climbing | 38T / 40T |
| Road Commuting | 46T / 48T / 50T |
| Road Racing / High Speed | 52T / 54T |
| Folding Bike | 50T / 52T / 54T |
| Gravel | 40T / 42T / 44T |
Note: Some of the smaller tooth counts listed above may belong to other STONEDW chainring models. The full-cover series shown on this page is available from 44T to 60T.
These recommendations are for reference only. Please choose according to your actual drivetrain ratio and riding conditions.
Package Content
- 1x chainring
- 4x ordinary bolts
Decorative bolt covers must be purchased separately.
