Stone 130BCD Oval Chainring for Brompton for SRAM Red for Shimano 5700 6700 Rotor QUARQ Power Meter Crank 40T–60T 9–12 Speed 7075-T651 Aluminum Road Folding Bike Chainring
Stone 130BCD oval chainring is designed for 1x drivetrain setups and is compatible with 130BCD cranks, including Brompton, SRAM Red, Shimano 5700 / 6700, Rotor 130BCD, and QUARQ 130BCD power meter cranks.
Made from high-strength 7075-T651 aluminum alloy and CNC-machined with high precision, this chainring offers excellent stiffness, durability, and smooth riding performance.
This chainring fits the following 130BCD cranks:
This chainring is designed for 1x drivetrain only and does not support 2x drivetrain setups.
For Shimano 12-speed road bike chains, the original Shimano 12-speed quick link is too narrow. Please replace it with another brand 12-speed quick link, such as:
KMC / YBN / SUMC / Other compatible 12-speed quick linksBuy here, if you need a tooth profile compatible with SRAM AXS 12-speed Flattop chain. Extra surcharge may apply.
If you need a different ovality other than 8.3%, please contact us for custom production.
| Tooth Size | Max Diameter | Weight |
|---|---|---|
| 40T | 178 mm | 86 g |
| 42T | 186 mm | 85 g |
| 44T | 194 mm | 90 g |
| 46T | 202 mm | 86 g |
| 48T | 210 mm | 99 g |
| 50T | 219 mm | 107 g |
| 52T | 226 mm | 112 g |
| 54T | 235 mm | 119 g |
| 56T | 242 mm | 124 g |
| 58T | 250 mm | 129 g |
| 60T | 259 mm | 133 g |
Note: 40T to 44T do not have hollow style.
Made from 7075-T651 aluminum alloy, supplied by Aleris from the USA, a material supplier known for aerospace-grade aluminum products. The chainring provides excellent stiffness, strength, and long-term durability.
Manufactured by high-speed CNC machining with 0.03 mm processing accuracy, helping ensure stable performance, accurate fitment, and smooth power transfer.
Anodized surface finish improves corrosion resistance, wear resistance, and appearance durability.
Most Stone chainrings are produced by order. Please allow 3–5 days preparation time before shipment.
Thank you for your understanding.

























