Stone 104BCD Round MTB Chainring Narrow Wide for Shimano M590 M610 M615 M670 M675 M770 M785 M780 M970 M980 M820 M430 SRAM X0 X5 X7 X9 32T-50T
Product Description:
This Stone 104BCD round chainring is designed for 104BCD MTB cranksets. Made from high-strength 7075-T651 aluminum alloy and precisely CNC-machined, it offers excellent stiffness, durability, and reliable performance for 1x drivetrain setups.
The narrow-wide tooth profile helps improve chain retention, reduce chain drop on rough terrain, and provide smooth and stable riding performance. It is suitable for mountain bike riding, 1x drivetrain conversions, and riders who need a lightweight and durable replacement chainring.
Compatibility:
BCD: 104BCD
Shape: Round
Chain Compatibility:
– MTB chains: 9 / 10 / 11 / 12-speed
– SRAM road bike chains: 9 / 10 / 11-speed
– Shimano road bike chains: 9 / 10 / 11 / 12-speed
Not compatible with:
– SRAM AXS 12-speed Flattop chains
– SRAM T-Type 12-speed chains
If want tooth shape for sram AXS/T-type flattop chain, buy here.
Narrow wide tooth, it design for 1x speed only, can not use as 2x speed, not support front shifting derailleur.
Please confirm your crankset BCD and mounting type before purchase.
Compatible with Shimano cranksets:
– For Shimano M590
– For Shimano M610
– For Shimano M615
– For Shimano M670
– For Shimano M675
– For Shimano M770
– For Shimano M785
– For Shimano M780
– For Shimano M970
– For Shimano M980
– For Shimano M820
– For Shimano M430
Compatible with SRAM cranksets:
– For SRAM X0
– For SRAM X5
– For SRAM X7
– For SRAM X9
– For SRAM XF
Important Note:
This is a narrow-wide chainring designed for 1x drivetrain systems only.
It cannot be used as a 2x chainring and does not support front derailleur shifting.
Shimano 12-Speed Road Chain Quick Link Notice:
If you use a Shimano 12-speed road bike chain, please replace the original Shimano 12-speed road quick link with another brand 12-speed quick link, such as KMC, YBN, SUMC, or a similar compatible brand.
The original Shimano 12-speed road quick link may be too narrow and may affect compatibility.
Specifications:
Brand: Stone
BCD: 104BCD
Shape: Round
Material: High-strength Aluminum 7075-T651
Material Hardness: HB150
Thickness: 4mm
Finish: Black anodized
Surface Treatment: Anodizing
Processing: High-speed CNC machining
CNC Precision: 0.03mm
Tooth Profile: Narrow Wide
Drivetrain Use: 1x only
Front Shifting: Not supported
Available Teeth: 32T / 34T / 36T / 38T / 40T / 42T / 44T / 46T / 48T / 50T
Size / Max Diameter / Weight:
32T – 138mm – 39g
34T – 146mm – 51g
36T – 154mm – 57g
38T – 162mm – 61g
40T – 170mm – 71g
42T – 178mm – 77g
44T – 186mm – 86g
46T – 194mm – 102g
48T – 202mm – 108g
50T – 210mm – 119g
Features:
– Designed for 104BCD MTB cranksets
– Round chainring design for stable power transfer
– Narrow-wide tooth profile for improved chain retention
– Helps reduce chain drop during off-road riding
– Suitable for 1x MTB drivetrain setups
– Compatible with 9 / 10 / 11 / 12-speed MTB chains
– Made from high-strength 7075-T651 aluminum alloy
– CNC-machined with 0.03mm processing accuracy
– Black anodized finish for better durability and corrosion resistance
– Lightweight, strong, and reliable for mountain bike use
Package Includes:
1 x Chainring
4 x Chainring Bolts
Production Notice:
Most Stone chainrings are produced to order. Please allow 3-5 days for production and preparation before shipping. Thank you for your understanding.
