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STONE 100BCD Round Narrow-Wide Chainring 32-48T for Shimano M7100 M7120 M7130 M8100 M8120 M8130 Cranks

Name: STONE 100BCD Round Narrow-Wide Chainring 32-48T for Shimano M7100 M7120 M7130 M8100 M8120 M8130 Cranks
Brand: DJC Bikes - DJC Components
Price: 16.56 USD
Availability: InStock
Rating: 5 (1 reviews)

$16.56 ~~$23.00~~

-28%

STONE 100mm BCD round Narrow-Wide chainring, 32-48T, for Shimano SLX M7100/M7120/M7130 and XT M8100/M8120/M8130 cranksets.

not compatible when the original chainring is the 28T or 30T version. Confirm the original ring can be removed with a T15 Torx wrench.

Chainring and bolt-only options are separate; select the required item. For 1x setups with the matching mounting specification.

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Specifications
Warranty FAQ

STONE 100BCD Round Narrow-Wide Chainring 32-48T for Shimano M7100 M7120 M7130 M8100 M8120 M8130 Cranks

Stone 100BCD Round MTB Chainring for Shimano SLX M7100 M7120 M7130, XT M8100 M8120 M8130 Crankset, Narrow-Wide 32T-48T

Technical Specifications

Item	Specification
Product Type	Chainring
BCD	100BCD
Material	Aluminum 7075-T651
Key Feature	Designed for Shimano 100BCD MTB cranksets Narrow-Wide tooth design for improved chain retention
Compatibility	Chain Compatibility: 9 / 10 / 11 / 12-speed chains (Compatible with Shimano 12-speed chains and for SRAM MTB 12-speed chains.)

The BCD100 single chainring is a special specification. for Shimano original chainring come in two different specifications, although they look the same. If your original chainring is 28T or 30T, this chainring is not compatible.

A T15 Torx wrench is required to remove the bolts from the original chainring. Before placing an order, please test whether the original chainring can be disassembled. If it can be removed successfully, you can then place an order for the replacement chainring.

We only provide the chainring. Chainring bolts are not included, the bolts need pay separately.

Product Description:

This Stone 100BCD round chainring is designed for Shimano 12-speed MTB cranksets with 100BCD mounting. Made from high-strength 7075-T651 aluminum alloy and precisely CNC-machined, it provides excellent stiffness, durability, and reliable performance for 1x MTB drivetrain setups.

The Narrow-Wide tooth profile improves chain retention, helps reduce chain drop on rough terrain, and provides smooth, stable riding performance. It is suitable for 9 / 10 / 11 / 12-speed chains. (Compatible with Shimano 12-speed chains and for SRAM MTB 12-speed chains.)

Important Compatibility Notice:

Compatible crankset models:

for Shimano SLX M7100 / M7120 / M7130
for Shimano XT M8100 / M8120 / M8130

Not compatible with:

for Shimano Deore M5100
for Shimano Deore M6100
Other cranksets not listed above

Please confirm your crankset model before purchase.

Specifications

Brand: Stone

BCD: 100BCD

Shape: Round

Material: 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

Tooth Options: 32T / 34T / 36T / 38T / 40T / 42T / 44T / 46T / 48T

Chain Compatibility: 9 / 10 / 11 / 12-speed chains (Compatible with Shimano 12-speed chains and for SRAM MTB 12-speed chains.)

Drivetrain Use: 1x only

Front Shifting: Not supported

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.

for Shimano 12-Speed Road Chain Quick Link Notice:

If you use a for Shimano 12-speed road bike chain, please replace the original for Shimano 12-speed road quick link with another brand 12-speed quick link, such as KMC, YBN, SUMC, or similar.

The original for Shimano 12-speed road quick link may be too narrow and may affect compatibility.

Size / Max Diameter / Weight:

32T - 138mm - 52g

34T - 145mm - 58g

36T - 154mm - 60g

38T - 162mm - 66g

40T - 170mm - 72g

42T - 178mm - 79g

44T - 186mm - 88g

46T - 194mm - 96g

48T - 202mm - 105g

Features

Designed for Shimano 100BCD MTB cranksets
Narrow-Wide tooth design for improved chain retention
Helps reduce chain drop during off-road riding
Suitable for 1x MTB drivetrain setups
Supports 9 / 10 / 11 / 12-speed chains
Compatible with Shimano and for SRAM MTB 12-speed chains
High-strength 7075-T651 aluminum alloy construction
CNC-machined with 0.03mm processing accuracy
Black anodized finish for improved durability and corrosion resistance
Lightweight, strong, and reliable for mountain bike riding

Package Includes

1 x Chainring

Bolts are not included. You can use the original crankset bolts for installation.

If want bolts, it have to pay separately.

STONE 100BCD Round Narrow-Wide Chainring 32-48T for Shimano M7100 M7120 M7130 M8100 M8120 M8130 Cranks

Available Options

Each row below is one available option combination. Choose the complete combination that matches your setup.

Option 1
32T
34T
36T
38T
40T
42T
44T
46T
48T
8-bolt bolts

All Taxes & Duties Included • Fast Delivery (8–12 Days) • No Hidden Fees • 6-Month Warranty

1 How long is the warranty?
We offer 6 months limited warranty to all products because of the quality defects. We offer lifetime payable repair service after the warranty.

2 Do need to pay tax duty when package arrive my country?
You no need to pay tax when package arrive your country, most countries in the world no need pay.
USA aslo no need tax duty and tariff, our carrier will cover it.

Brazil, Chile, Columbia clients need pay import duty when package arrive your country.

3 Can I return the goods if I am not like it?
Yes you can apply return and refund when you receive the product within 7 days. But as return shipping fee is relatively high when send back to China, so we suggest you consider and carefully before purchase.

Or you can send message to us and discuss technical issues to clarify if the products is what you need, and then pay after you sure your order is correct.

4 How long is the shipping time?
To most countries 7-15days can arrive your address. Pay extra 20USD if want ship by Fedex DHL UPS.

5 How can I know the tracking number?
We will send the tracking code to your email automatically after we send the package. check the track update here https://www.17track.net/en

Support email info@djcbikes.com

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