STONE 110 BCD Double Chainring for Shimano 105 R7100 / Ultegra R8100 / Dura-Ace R9200, CNC AL7075T651, 46–58T
The STONE BCD110R2B road double chainring is built to upgrade your road drivetrain with smooth shifting, high strength, and broad compatibility. Precision CNC machined from premium AL7075T651 aluminum alloy, this chainring set delivers dependable durability, accuracy, and stable performance for racing, training, commuting, gravel riding, and custom bike builds.
Key Features
- Premium AL7075T651 aluminum alloy
- High-strength 7075 aluminum material with an overall hardness of 150HB
- Durable, lightweight, and resistant to deformation
- Precision CNC machining
- CNC processed for high accuracy and consistent quality
- Optimized tooth profile for smooth, reliable shifting
- Anodized surface treatment helps prevent oxidation and corrosion
- Designed for road drivetrains
- Supports 9–12 speed setups
- Compatible with Shimano 12-speed and 11-speed road groupsets
- Compatible with SRAM 11-speed road groupsets
- SRAM AXS 12s is not supported
- Wide crank compatibility
- Suitable for Shimano R7100 / R8100 / R9200 cranksets
- Backward compatible with R7000 / R8000 / R9100 / 5800 / 6800 / 9000 cranksets
- Works with many 110×4 four-arm power meters such as SIGEYI, XCADEY, and Magene P505 P515 PES TEO
- Improved shifting performance
- Equipped with dedicated shifting pins
- More shifting pins than many similar products
- Improves chain pick-up and front shifting success rate
- Multiple teeth options
- Available in a wide range of chainring combinations
- Suitable for racing, training, commuting, gravel, and DIY bike upgrades
Available Specifications
Regular Version: BCD110R2B
| Teeth Combination | Weight with Bolts | Item No. | Color |
|---|---|---|---|
| 46T + 32T | 132 g | BCD110R2B-4632 | Black / Silver |
| 48T + 33T | 142 g | BCD110R2B-4833 | Black / Silver |
| 50T + 34T | 154 g | BCD110R2B-5034 | Black / Silver |
| 52T + 36T | 167 g | BCD110R2B-5236 | Black / Silver |
| 53T + 39T | 192 g | BCD110R2B-5339 | Black / Silver |
| 54T + 38T (New) | 182.4 g | BCD110R2B-5438 | Black / Silver |
| 54T + 40T | 200 g | BCD110R2B-5440 | Black / Silver |
| 55T + 40T | 202 g | BCD110R2B-5540 | Black / Silver |
| 56T + 42T | 214 g | BCD110R2B-5642 | Black / Silver |
| 58T + 44T | 234 g | BCD110R2B-5844 | Black / Silver |
Hollow Version: BCD110R2B-L
| Teeth Combination | Weight with Bolts | Item No. | Color |
|---|---|---|---|
| 46T + 32T | 130 g | BCD110R2B-4632-L | Black / Silver |
| 48T + 33T | 146 g | BCD110R2B-4833-L | Black / Silver |
| 50T + 34T | 157 g | BCD110R2B-5034-L | Black / Silver |
| 52T + 36T | 171 g | BCD110R2B-5236-L | Black / Silver |
| 53T + 39T | 188 g | BCD110R2B-5339-L | Black / Silver |
| 54T + 38T (New) | 184.8 g | BCD110R2B-5438-L | Black / Silver |
| 54T + 40T | 194 g | BCD110R2B-5440-L | Black / Silver |
| 55T + 40T | 200 g | BCD110R2B-5540-L | Black / Silver |
| 56T + 42T | 218 g | BCD110R2B-5642-L | Black / Silver |
| 58T + 44T | 240 g | BCD110R2B-5844-L | Black / Silver |
Product Parameters
- Brand: STONE
- Model: BCD110R2B / BCD110R2B-L
- Material: Imported AL7075T651 aluminum alloy
- Hardness: 150HB
- Process: CNC machining
- Surface treatment: Anodized finish
- Large chainring thickness: 5mm
- Small chainring thickness: 3mm
- Crank spider requirement: 3.5mm thickness
- Speed compatibility: 9–12 speed; Shimano 12-speed road / Shimano 11-speed / SRAM 11-speed; SRAM AXS 12s not supported
- Color options: Black / Silver depending on model
Compatibility
This chainring fits the following Shimano cranksets and 110×4 four-arm power meter spiders:
| Compatible Component | Notes |
|---|---|
| Shimano R7100 | 105 12-speed crankset |
| Shimano R8100 | Ultegra 12-speed crankset |
| Shimano R9200 | Dura-Ace 12-speed crankset |
| Shimano R7000 / R8000 / R9100 | Backward compatible 11-speed cranksets |
| Shimano 5800 / 6800 / 9000 | Backward compatible older cranksets |
| SIGEYI 110×4 power meter | Four-arm spider |
| XCADEY 110×4 power meter | Four-arm spider |
| Magene P505 power meter | Four-arm spider |
| Other 110×4 four-arm power meter spiders | Must match 110 BCD four-bolt pattern |
Notes:
- For 48T and above, the chainring supports the Shimano R9200P power meter crank or a compatible SIGEYI power meter spider/plate.
- SRAM AXS 12s is not supported.
Package Includes
- 1 set × STONE double chainrings
- Ordinary mounting bolts included
Optional decorative bolt caps need to be purchased separately.
Important Notes
- If using chainrings larger than 54T or smaller than 48T, we suggest purchasing the STONE front derailleur extender for better performance.
- Decor bolts only work with STONE 2X chainrings.
- 46-32T does not support decor bolts because the 32T has a built-in female bolt design.
Package Contents Detail
- 2 × Chainrings
- 4 × Aluminum chainring bolts
Extra for 46-32T:
- 2 × Offset spacers (for 24mm / 30mm axle adjustment)
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