Aero chainring kit · 2x12
ALUGEAR AERO Upgrade Kit for Shimano 105 R7100 (2x12)
A complete aero chainring and cover upgrade for Shimano 105 R7100, bringing CNC-machined 7075-T6 rings and a premium look to an everyday 12-speed chainset.
Highlights
Why we rate it
Complete aero conversion
Outer ring, inner ring and a matching aero cover in one box, so your 105 FC-R7100 crank gets a clean, integrated look without hunting for parts.
Hides the spider joint
The cover sits over the junction between the rings and the crank arm, smoothing the drive side and tidying up the profile.
Five gearing choices
Pick from 48-34, 50-34, 52-36, 54-40 or 56-40 – from compact endurance gearing right up to big-ring time-trial ratios.
Mix-and-match colours
Rings and cover are chosen separately, with ten anodised cover finishes to match or contrast with the rest of your build.
Machined, not stamped
Both rings are CNC-milled from 7075-T6 aluminium and hard anodised for stiffness, accurate shifting and long-lasting good looks.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Compatibility
- Shimano 105 FC-R7100 2x12 cranks
- BCD
- 110 mm Shimano asymmetric (4-arm)
- Speeds
- 2x12
- Ring combinations
- 48-34, 50-34, 52-36, 54-40, 56-40
- Outer ring weights
- 50T 112 g; 52T 127 g; 54T 143 g; 56T 171 g
- Inner ring weights
- 34T 26 g; 36T 29 g; 40T 39 g
- Cover weight
- 17 g
- Bolts
- M8 11.5 mm, 8 g
- Material
- Aluminium 7075-T6
- Manufacture
- CNC milled, anodised
- Intended use
- Road and time trial
In the box
- Includes
- Outer chainring
- Includes
- Inner chainring
- Includes
- ALUGEAR AERO cover
- Includes
- M8 11.5 mm chainring bolts
Ordering
Available from The Cycle Collective
Made to order by ALUGEAR. For availability, lead times, sizing or compatibility advice, call 0203 148 6764 or email hello@thecyclecollective.cc.