Shimano Ultegra FC-R8100 12-Speed Chainrings - 52T
Precision Engineering. Smooth Shifting. Race-Ready Performance.
Upgrade or replace your chainrings with the official Shimano Ultegra FC-R8100 chainrings, engineered for 12-speed 2x road drivetrains. Designed specifically for use with the FC-R8100 and FC-R8100-P power meter cranksets, these chainrings ensure the perfect match for your Ultegra-level performance setup.
Thanks to Shimano’s proven Hollowglide construction on the outer rings, you get exceptional stiffness at low weight, ensuring lightning-fast front shifts and reliable power transfer. Whether you’re pushing hard on race day or clocking up big miles on your local loops, these chainrings deliver smooth and efficient performance you can count on.
Available in a range of sizes for both inner and outer rings, you can tune your drivetrain to suit your riding style — from fast-paced criteriums to long endurance rides.
Key Features & Benefits
- Compatible with FC-R8100 / FC-R8100-P - Designed to work seamlessly with Shimano’s 12-speed Ultegra cranksets and power meter variants.
- Hollowglide Outer Ring Construction - Carbon-reinforced and hollow on the outer rings for reduced weight and improved stiffness, delivering fast, crisp shifts under load.
- Lightweight & Durable Materials - Inner and outer rings made from anodised aluminium and CFRP (carbon-fibre reinforced plastic) for optimal performance and wear resistance.
- 12-Speed Road Optimised - Perfect chainline, fast shifting, and high efficiency for modern Shimano 2x12 road drivetrains.
- Multiple Gear Options - Fine-tune your gearing with inner and outer ring combinations to match your riding needs.
Technical Specifications
| Feature | Details |
| Compatibility | Shimano FC-R8100 / FC-R8100-P cranksets |
| Speeds | 2x12-speed road |
| Mounting | 110 mm BCD (4-bolt pattern) |
| Chainring Sizes | Inner: 34T, 36T Outer: 50T, 52T |
| Outer Ring Material | Carbon Fibre Reinforced Plastic (CFRP) and anodised aluminium (Hollowglide) |
| Inner Ring Material | Anodised aluminium |
| Colour | Anodised grey |
| Drivetrain Compatibility | Shimano 12-speed road (R8100 series) |
What’s Included
- 1 × Shimano Ultegra FC-R8100 Chainring
(Choose your size: 34T, 36T, 50T or 52T)
Note: Inner and outer rings sold separately.
Who Is This For?
- Road cyclists running Shimano 12-speed 2x drivetrains
- Riders looking to replace worn chainrings or change gearing ratios
- Cyclists upgrading to high-performance Hollowglide chainrings
Why Choose Shimano Ultegra Chainrings?
Because you want the legendary precision, stiffness, and reliability Shimano is known for — without the extra weight or compromise. These are the same chainrings trusted by thousands of riders and racers worldwide for smooth, responsive shifting and long-term durability.
Precision-built for performance. Now available at PDL.Bike
(4186)
Key Features & Benefits
- Compatible with FC-R8100 / FC-R8100-P - Designed to work seamlessly with Shimano’s 12-speed Ultegra cranksets and power meter variants.
- Hollowglide Outer Ring Construction - Carbon-reinforced and hollow on the outer rings for reduced weight and improved stiffness, delivering fast, crisp shifts under load.
- Lightweight & Durable Materials - Inner and outer rings made from anodised aluminium and CFRP (carbon-fibre reinforced plastic) for optimal performance and wear resistance.
- 12-Speed Road Optimised - Perfect chainline, fast shifting, and high efficiency for modern Shimano 2x12 road drivetrains.
- Multiple Gear Options - Fine-tune your gearing with inner and outer ring combinations to match your riding needs.
Who Is This For?
- Road cyclists running Shimano 12-speed 2x drivetrains
- Riders looking to replace worn chainrings or change gearing ratios
- Cyclists upgrading to high-performance Hollowglide chainrings
Why Choose Shimano Ultegra Chainrings?
Because you want the legendary precision, stiffness, and reliability Shimano is known for — without the extra weight or compromise. These are the same chainrings trusted by thousands of riders and racers worldwide for smooth, responsive shifting and long-term durability.
| Feature | Details |
| Compatibility | Shimano FC-R8100 / FC-R8100-P cranksets |
| Speeds | 2x12-speed road |
| Mounting | 110 mm BCD (4-bolt pattern) |
| Chainring Sizes | Inner: 34T, 36T Outer: 50T, 52T |
| Outer Ring Material | Carbon Fibre Reinforced Plastic (CFRP) and anodised aluminium (Hollowglide) |
| Inner Ring Material | Anodised aluminium |
| Colour | Anodised grey |
| Drivetrain Compatibility | Shimano 12-speed road (R8100 series) |
What’s Included
- 1 × Shimano Ultegra FC-R8100 Chainring
(Choose your size: 34T, 36T, 50T or 52T)
Note: Inner and outer rings sold separately.
| SKU | 4186 |
| Brand | Shimano |
