Stone 5mm Offset Bike Chainring for E THIRTEEN E13 RG1 TRS XCX GRAVEL CARBON Crank Narrow Wide Direct Mount 9-12S 30T-40T

STONE 5mm Offset Direct Mount Chainring for E*Thirteen / E13 LG1 Race TRS Race XCX Race MTB & Gravel Carbon Cranks — Narrow Wide 9–12 Speed 30T–40T

The STONE 5mm Offset Direct Mount Chainring is designed for E*Thirteen / E13 carbon cranksets, including LG1 Race, TRS Race, XCX Race Mountain, and XCX Race Gravel models.

This chainring uses the same offset as the original E13 UL-5mm chainring, making it suitable for Boost specification frames. Made from high-strength 7075-T651 aluminum, it provides excellent stiffness, durability, and reliable chain retention for MTB, gravel, and off-road riding.

The original E13 chainring has two specifications, one is UL-5mm offset, one is CL-8mm offset. Stone chainring is 5mm offset,can fit for boost spec frames.

Compatibility

This chainring is compatible with the following E*Thirteen / E13 cranksets:

• For LG1 Race Carbon Cranks
• For TRS Race Carbon Cranks
• For XCX Race Mountain Carbon Cranks
• For XCX Race Gravel Carbon Cranks

It is designed as a replacement for the original E13 UL-5mm offset chainring.

Important Notice:
The original E13 chainring has two offset specifications:

This STONE chainring is 5mm offset and is suitable for Boost spec frames. Please confirm your original chainring offset before ordering.

Size & Weight

Weight may vary slightly due to manufacturing tolerances.

Product Advantages

1. High-Strength 7075-T651 Aluminum

Made from 7075-T651 high-strength aluminum, this chainring offers excellent mechanical performance for demanding riding conditions.

• High stiffness
• Strong durability
• Lightweight structure
• Good wear resistance
• Reliable long-term performance

2. Precision CNC Machining

Each chainring is produced using high-speed CNC machining with a working accuracy of 0.03mm.

This ensures:

• Accurate crank fitment
• Smooth chain engagement
• Stable drivetrain performance
• Consistent riding quality

3. Narrow-Wide Tooth Design

The narrow-wide tooth profile helps improve chain retention and reduce the chance of chain drop during rough riding.

It also supports smoother chain engagement and better drivetrain stability.

Package Includes

• 1 × STONE Direct Mount Chainring