Stone Oval Narrow Wide Chainring 104BCD for Shimano / SRAM Cranks
Compatible with Shimano M430 M590 M610 M615 M670 M675 M770 M780 M785 M970 M980 M820
Available Sizes: 34T / 36T / 38T / 40T / 42T / 44T / 46T / 48T / 50T
Product Description:
This Stone oval narrow wide chainring is designed for 1x drivetrain systems, offering excellent chain retention, smooth pedaling performance, and reliable durability. Made from high-strength 7075-T651 aluminum alloy and precisely CNC-machined, it is a great upgrade for MTB, gravel, and compatible road bike setups.
The oval chainring design helps improve pedaling efficiency by reducing the dead spot during each pedal stroke, making climbing and acceleration smoother and more efficient.
Specifications:
Brand: Stone
Material: High-strength Aluminum 7075-T651
Hardness: HB150
BCD: 104BCD
Thickness: 4 mm
Surface Treatment: Anodized finish
Color: Black
Manufacturing Process: High-speed CNC machining
CNC Precision: 0.03 mm
Chainring Type: Oval narrow wide chainring
Drivetrain Compatibility: 1x only
Compatible Cranksets:
For Shimano:
M430 / M590 / M610 / M615 / M670 / M675 / M770 / M780 / M785 / M970 / M980 / M820 and other compatible 104BCD cranksets
For SRAM:
Compatible with most SRAM 104BCD cranksets, including X0 / X5 / X7 / X9 / XF series
Chain Compatibility:
MTB Chains:
Compatible with 9 / 10 / 11 / 12-speed MTB chains
SRAM Road Chains:
Compatible with 9 / 10 / 11-speed SRAM road chains
Shimano Road Chains:
Compatible with 9 / 10 / 11 / 12-speed Shimano road chains
Important Note:
This chainring is not compatible with SRAM AXS 12-speed Flattop chains.
If you need a tooth profile compatible with SRAM AXS Flattop chains, please contact us for customization. Extra customization fees may apply.
Shimano 12-Speed Road Chain Notice:
When using a Shimano 12-speed road bike chain, please replace the original Shimano quick link with another brand 12-speed quick link, such as KMC, YBN, SUMC, or other compatible brands. The original Shimano 12-speed road quick link is too narrow and may not fit properly.
Size / Diameter / Weight:
34T – Max Diameter: 154 mm – Weight: approx. 50 g
36T – Max Diameter: 162 mm – Weight: approx. 62 g
38T – Max Diameter: 170 mm – Weight: approx. 69 g
40T – Max Diameter: 178 mm – Weight: approx. 72 g
42T – Max Diameter: 186 mm – Weight: approx. 78 g
44T – Max Diameter: 194 mm – Weight: approx. 86 g
46T – Max Diameter: 202 mm – Weight: approx. 98 g
48T – Max Diameter: 210 mm – Weight: approx. 109 g
50T – Max Diameter: 218 mm – Weight: approx. 118 g
Package Includes:
1 x Chainring
4 x Chainring Bolts
Features:
1. High-Strength 7075-T651 Aluminum
Made from premium 7075-T651 aluminum alloy, offering excellent stiffness, strength, and long-lasting durability.
2. Precision CNC Machining
Manufactured with high-precision CNC technology, with machining accuracy up to 0.03 mm for reliable performance and accurate fitment.
3. Narrow Wide Tooth Design
The narrow wide tooth profile improves chain retention and helps prevent chain drops during riding.
4. Oval Chainring Design
The oval shape helps optimize power transfer, improve pedaling efficiency, and reduce pedaling dead spots.
5. Lightweight and Durable
A great balance of low weight, strength, and performance for MTB, gravel, and compatible road bike use.
Important Notes:
This chainring is designed for 1x drivetrain systems only.
It cannot be used for 2x or 3x drivetrains.
It does not support front derailleur shifting.
Please make sure your crankset is 104BCD before purchasing.
Production Time:
Most Stone chainrings are made to order. Please allow 3–5 days for production and preparation before shipping. Thank you for your understanding.
