Home > All Products > Chainrings& Spiders& Power Meter > Stone Round Chainring for Special 30mm spindle crank MTB bike Cycling 30T 32T 34 36 38 40T Chain Wheel Bicycle Tooth Plate BB30 0mm offset for specialized crank for s-works

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Limited Offer!

Stone Round Chainring for specialized crank for s-works 30–40T, 0mm offset, Narrow-Wide, 4mm Thickness

Name: Stone Round Chainring for specialized crank for s-works 30–40T, 0mm offset, Narrow-Wide, 4mm Thickness
Brand: DJC Bikes - DJC Components
Price: 60.48 USD
Availability: InStock

$60.48 ~~$84.00~~

-28%

Stone Round Chainring for specialized crank for s-works 30–40T, 0mm offset, Narrow-Wide, 4mm Thickness.

Not for Other crank models.

Not for T-Type 12-speed chains by default.

Tooth-count options: 30-40T.

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Specifications
Warranty FAQ

Stone Round Chainring for specialized crank for s-works 30–40T, 0mm offset, Narrow-Wide, 4mm Thickness

STONE Round Direct Mount Narrow-Wide Chainring for Special BB30 30mm Spindle MTB Crank | 0mm Offset | 30T–40T

The STONE Round Narrow-Wide Chainring is designed for Special BB30 30mm spindle MTB cranks. With a 0mm offset design and precision CNC-machined structure, it offers reliable chain engagement, smooth pedaling, and stable performance for mountain biking, XC, and trail riding.

Made from high-strength 7075-T651 aluminum, this chainring provides excellent stiffness, durability, and lightweight performance. The Narrow-Wide tooth profile helps improve chain retention, reduce chain drops, enhance mud-shedding performance, and lower drivetrain noise.

Specifications

Item	Details
Model Name	STONE BB30 Round Chainring for specialized crank for s-works
Material	Aluminum 7075-T651
Color	Black, Anodized
Tooth Options	30T / 32T / 34T / 36T / 38T / 40T
Offset	0mm
Thickness	4mm
Hardness	HB150
Processing Precision	0.03mm
Chain Compatibility	9 / 10 / 11 / 12-speed Chains (Not for AXS Flattop 12/13-speed chain)
Key Feature	Material: Aluminum 7075-T651
Compatibility	Chain Compatibility: 9 / 10 / 11 / 12-speed Chains (Not for AXS Flattop 12/13-speed chain)

Compatibility

This chainring is designed for:

For Special BB30 30mm spindle crank only

Not Compatible With

Not for Other crank models
Not for T-Type 12-speed chains by default

Please confirm your crank type before ordering, as this chainring is only compatible with the specified Special BB30 30mm crank.

Chain Compatibility Notice

This chainring supports most 9–12-speed chains.

However, it does not support T-Type 12-speed chains by default.

If you need a chainring for a T-Type chain, please contact us before ordering for customized tooth profile options.

Size & Weight

Model	Teeth	Diameter	Weight
Special-Round	30T	130mm	53g
Special-Round	32T	138mm	59g
Special-Round	34T	146mm	61g
Special-Round	36T	154mm	71g
Special-Round	38T	162mm	81g
Special-Round	40T	170mm	90g

Weight may vary slightly depending on production batch.

Package Includes

1 × Bike Chainring

Key Features

Round Narrow-Wide tooth design for improved chain retention
Helps reduce chain drops during rough riding
Enhanced self-cleaning performance in muddy and dirty conditions
Reduced drivetrain noise for a smoother ride
0mm offset design for compatible BB30 30mm spindle cranks
CNC-machined for accurate fitment and reliable performance
Black anodized finish for better corrosion resistance and premium appearance

Advantages

1. Premium 7075-T651 Aluminum

Made from high-strength 7075-T651 aluminum, offering excellent stiffness, strength, and endurance for demanding MTB riding.

2. High-Precision CNC Machining

Manufactured with precision CNC processing and a working accuracy of 0.03mm, ensuring precise installation, smooth chain engagement, and dependable performance.

Important Note

This chainring is only suitable for Special BB30 30mm spindle cranks. Other crank models cannot be installed. Please check your crank model carefully before placing an order.

Stone Round Chainring for specialized crank for s-works 30–40T, 0mm offset, Narrow-Wide, 4mm Thickness

Available Options

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

Option 1
30T
32T
34T
36T
38T
40T

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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