Shimano Ultegra FC-R8100-P Power Meter Crankset (12-speed, 175mm, 50-34T)
SKU code: SHM-IFCR8100PEX04F
Sold Out
Train and race with true, dual-sided power data straight from your cranks. The Shimano Ultegra FC-R8100-P builds an accurate left/right power meter into the proven Hollowtech II crankset, so you get race-grade Ultegra stiffness and shifting with no bolt-on pods, no extra pedals and no compromise on weight.
Highlights
- Dual-sided measurement reports true left/right balance, not an estimate
- Integrated, waterproof, rechargeable Li-ion battery with up to 300+ hours of ride time
- Wireless data over both ANT+ and Bluetooth LE to head units and training apps
- Genuine Ultegra Hollowtech II crank arms for stiff, efficient power transfer
- 50-34T compact gearing in a 175 mm arm length for versatile road riding and climbing
Accurate dual-sided power
Strain gauges in each crank arm measure your left and right legs independently, giving you genuine left/right balance and consistent readings across the calibration range. Active temperature compensation keeps the numbers steady as conditions change, and Shimano rates the system to within plus or minus 2.0 percent.
Built-in, fuss-free battery
A sealed, rechargeable lithium-ion battery is integrated into the crankset, so there are no coin cells to swap. It is fully waterproof and delivers up to 300+ hours of riding between charges, depending on your ANT+ and Bluetooth LE settings.
Proven Ultegra performance
This is a full Ultegra R8100 crankset first and a power meter second. Hollowtech II construction and Hollowglide outer chainrings deliver crisp, fast front shifting and excellent rigidity, so the power data comes without any drop in ride quality.
Compatibility & fit
- Designed for 2 x 12-speed Shimano road drivetrains
- Hollowtech II interface running on a 24 mm Shimano bottom bracket (sold separately)
- 110 mm 4-arm asymmetric bolt circle diameter (BCD)
- Compact 50-34T chainrings, 175 mm crank arm length
- Q-factor 148 mm
- Pairs with ANT+ and Bluetooth LE compatible cycling computers, watches and training apps
Always confirm your frame has adequate chainstay clearance and that your bottom bracket matches the Hollowtech II 24 mm spindle before fitting.
This Shimano Ultegra FC-R8100-P power meter crankset is covered by Shimano's manufacturer warranty against defects in materials and workmanship under normal use. The warranty does not cover normal wear, crash or impact damage, improper installation, or unauthorised modification. Retain your proof of purchase.
For warranty support, return the item to Tune Cycles and we'll manage the claim for you.
This warranty is in addition to your rights under the Australian Consumer Law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and to compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
- Dual-sided power meter with independent left/right leg measurement and balance
- Shimano-rated accuracy within plus or minus 2.0 percent across the calibration range
- Active temperature compensation for stable readings in changing conditions
- Integrated, waterproof, rechargeable lithium-ion battery
- Up to 300+ hours of ride time per charge (depending on ANT+/Bluetooth LE settings)
- Wireless transmission over both ANT+ and Bluetooth LE
- Genuine Ultegra R8100 Hollowtech II crankset
- Hollowglide outer chainring for fast, precise front shifting
- 50-34T compact gearing, 175 mm crank arm length
| Brand | Shimano |
|---|---|
| Series | Ultegra R8100 |
| Model | FC-R8100-P |
| Type | Dual-sided power meter crankset |
| Speeds | 2 x 12-speed (road) |
| Chainrings | 50-34T (compact) |
| Crank arm length | 175.0 mm |
| Crank construction | Hollowtech II |
| BCD | 110 mm, 4-arm asymmetric |
| Bottom bracket interface | 24 mm Shimano Hollowtech II spindle |
| Q-factor | 148 mm |
| Crank arm material | Aluminium |
| Power measurement | Dual-sided, left/right balance |
| Accuracy | Within +/- 2.0% |
| Battery | Integrated, waterproof, rechargeable lithium-ion |
| Battery life | Up to 300+ hours (depending on ANT+/Bluetooth LE settings) |
| Connectivity | ANT+ and Bluetooth LE |
| SKU | SHM-IFCR8100PEX04F |
| Barcode # | 4550170821159 |
| Brand | Shimano |
