Stone 130 BCD Round Chainring 42T–60T for Fixed Gear, Track and Single Speed Bikes
The Stone 130 BCD round chainring is a CNC-machined, single speed chainring built for fixed gear, track, fixie and single speed bicycles. Cut from high strength 7075-T651 aluminum alloy, it offers 19 tooth options from 42T to 60T so you can dial in the exact gear ratio for your riding style and terrain.
Important: This chainring is for single speed bikes only.
It is not compatible with 7/8/9/10/11/12 speed bikes.
Compatibility
- Fits 130 BCD 5-arm cranksets.
- Designed for fixed gear, track, fixie and single speed bicycles.
- Works with 1/2″ x 1/8″ single speed chains.
- Not compatible with 7-12 speed drivetrains.
- For BB30 / BF30 cranksets, this chainring cannot be installed in the outer chainring position. The inner chainring position is not affected.
Available Sizes
Max outer diameter and weight are for reference only.
| Teeth | Max Outer Diameter | Weight |
|---|---|---|
| 42T | 176mm | 103g |
| 43T | 180mm | 108.8g |
| 44T | 184mm | 112.4g |
| 45T | 188mm | 123g |
| 46T | 192mm | 121.1g |
| 47T | 196mm | 124.3g |
| 48T | 200mm | 129.4g |
| 49T | 204mm | 144.1g |
| 50T | 208mm | 148.4g |
| 51T | 212.5mm | 156.4g |
| 52T | 216.5mm | 161.2g |
| 53T | 220.5mm | 170g |
| 54T | 225mm | 172.7g |
| 55T | 228.5mm | 179.4g |
| 56T | 232.5mm | 187.8g |
| 57T | 236.5mm | 193.9g |
| 58T | 241mm | 200g |
| 59T | 245mm | 206.3g |
| 60T | 249mm | 211.6g |
Product weight may vary slightly due to production batch or product upgrades.
Specifications
- Brand: Stone
- Material: High strength 7075-T651 aluminum alloy
- Hardness: HB150
- BCD: 130 BCD
- Shape: Round
- Speed: Single Speed
- Chain Compatibility: 1/2″ x 1/8″
- Thickness: 4mm
- Manufacturing: CNC machined
- CNC Precision: 0.03mm
- Color: Black
- Teeth Options: 42T-60T
Features
- Designed for fixed gear, track, fixie and single speed bicycles.
- Made of high strength 7075-T651 aluminum alloy for good stiffness and durability.
- CNC machined to 0.03mm precision for an accurate fit and smooth chain engagement.
- 4mm thick construction improves rigidity for single speed riding.
- 19 tooth options from 42T to 60T cover a wide range of gear ratio needs.
- Round chainring design delivers stable, direct power transfer for single speed riding.
Important Compatibility Notes
- For single speed bikes only. Not compatible with 7/8/9/10/11/12 speed bikes.
- Confirm your crankset is 130 BCD before purchase.
- Confirm your chain size is 1/2″ x 1/8″.
- For BB30 / BF30 cranksets, this chainring cannot be installed in the outer chainring position. The inner chainring position is not affected.
- Check frame clearance before choosing a large tooth size.
- Installation compatibility may vary depending on crank model, chainline and bicycle frame clearance.
Package Includes
- 1 x Chainring
- 5 x Chainring Bolts
