This chainring spider adapter is designed for Rotor 30mm spindle cranksets, including Rotor REX1, REX2, 3D, 3DF and 3DF+ cranksets.
It converts the crankset to 110BCD road chainring compatibility, suitable for road bike and gravel bike use.
Compatible with both 1x and 2x drivetrain setups.
Fit for Rotor 30mm spindle cranksets
Fit for Rotor REX1 / REX2
Fit for Rotor 3D / 3DF / 3DF+
Compatible with 110BCD 4-arm / 5-arm chainrings
Compatible with 1x and 2x drivetrain setups
for Shimano 105 R7000 / 5800 / R7100
for Shimano Ultegra R8000 / 6800 / R8100
for Shimano Dura-Ace R9100 / 9000 / R9200
for Shimano Tiagra 4700
Product Type: Chainring Spider Adapter
Crank Compatibility: for Rotor 30mm Spindle Crankset
Fit Crank Models: Rotor REX1 / REX2 / 3D / 3DF / 3DF+
Chainring Type: 4-arm / 5-arm road chainring
Drivetrain Compatibility: 1x / 2x
Material Source: Aleris USA
Hardness: HB150
Surface Treatment: Anodized
Thickness: 13mm
Chainline: Same as original Rotor size
Weight: approx. 40g
1. High-Strength Aluminum
Made from 7075-T651 aerospace aluminum alloy, offering excellent stiffness, durability, and long service life.
2. Precision CNC Machining
High-precision CNC machining with working accuracy up to 0.03mm helps ensure accurate installation and stable riding performance.
3. 110BCD Conversion
Converts Rotor 30mm spindle cranksets to 110BCD, allowing riders to use more road and gravel chainring options.
4. Wide Chainring Compatibility
Compatible with 110BCD 4-arm and 5-arm chainrings.
5. Stable Chainline
Designed to keep the same chainline as the original Rotor size for smooth drivetrain performance.
Please check your crank model, spindle type, chainring BCD, and chainring arm type before purchase.
This adapter is designed for Rotor 30mm spindle cranksets, including REX1, REX2, 3D, 3DF and 3DF+.
Professional installation is recommended.
