RIRO 110BCD Road Bike Chainring 50/34T 52/36T 53/39T Shimano

RIRO 110BCD Road Bike Chainring — Ultralight 7075-T6 Aluminum, 4-Bolt Double Chainwheel

Upgrade your drivetrain with the RIRO 110BCD Double Chainring, engineered for road cyclists who demand precise, smooth, and reliable gear changes. Compatible with Shimano 105 FC-R7000, FC-R8000, and FC-R9100 cranks, this CNC-machined chainring delivers exceptional stiffness and ultralight performance for every ride.

Made in Mainland China.

Key Features

• Premium 7075-T651 Aluminum Alloy (T6 Heat Treated): Aerospace-grade material offers a superior strength-to-weight ratio, keeping your setup light without sacrificing durability.
• Full CNC Hollow Design (4.6mm Chainring Thickness): Precision CNC machining on both sides enhances rigidity while minimizing weight — approximately 155g–175g depending on tooth configuration.
• Multiple Shift Pins & Down-Chain Notches: 6 upshift pins and multiple downshift notches work together for snappy, chain-drop-resistant gear transitions on 2×10S, 2×11S, and 2×12S drivetrains.
• Stripe Chamfer Design: The textured, chamfered profile adds rigidity and three-dimensional aesthetics while reducing overall weight.
• Countersunk Bolt Structure: Maximizes contact area with the chainring teeth, simplifies installation, and reduces unwanted noise during riding.
• Anodized Surface Finish: Hard anodizing protects against corrosion, keeps bolts secure, and cuts down on drivetrain noise.
• Included 9mm CNC-Machined Chainring Bolts: Integrated double chainring screws included — ready to install right out of the box.

Specifications

Note: All measurements are manually taken and may have slight deviations.

Why Choose the RIRO 110BCD Chainring?

Whether you're tackling steep climbs or pushing top-end speed on flat roads, the RIRO chainring's CNC triangle and texture structure ensures direct power transfer with every pedal stroke. The countersunk design and precision bolt holes mean you spend less time wrenching and more time riding. The included chainring bolts make installation straightforward for home mechanics and professional bike fitters alike.

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Frequently Asked Questions

Q: What cranks is the RIRO 110BCD chainring compatible with?

A: The RIRO 110BCD chainring is compatible with Shimano 105 FC-R7000, FC-R8000, and FC-R9100 cranks, as well as any other crankset using a 110 BCD (Bolt Circle Diameter) 4-bolt pattern. Always verify your crank's BCD before purchasing.

Q: What speed drivetrains does this chainring support?

A: This chainring supports 2×10-speed, 2×11-speed, and 2×12-speed drivetrains, making it versatile for a wide range of modern road bike groupsets.

Q: Are chainring bolts included with this chainring?

A: Yes! The RIRO 110BCD chainring comes with complimentary 9mm CNC-machined double chainring bolts, so you can install it directly without purchasing additional hardware.

Q: Which tooth combination should I choose — 50/34T, 52/36T, or 53/39T?

A: The 50/34T compact option is ideal for climbing and varied terrain. The 52/36T mid-compact suits all-around road riding. The 53/39T standard setup is best for flat roads and high-speed performance. Choose based on your riding style and the gradient of your typical routes.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.