Product Details
The choice of the world's best climbers, sprinters, and time trialists, the Dura-Ace R9100 chainringdrops weight while maximising power transfer.
The new design, and its iconic look, is adapted for race specific disc brake systems.
Features
Best balance for lighter weight (-7g) and efficiency
Maintains high rigidity and reduces weight
Shorter length of rear center with O.L.D.135mm
Optimum power transfer
Iconic design
Adapted for race specific disc brake system
Rider tuned gearing options
Specifications
Chain line (mm) 43.5 Compatible chain HG-EV 11-speed, HG-X11 Crank fixing bolt included No Gear arms 4 HollowGlide Yes HollowTech Technology Yes B.C.D. (mm) 110 Rear Speeds 11
Versions:
34 teeth (for use with 50 teeth)
Type: MS
36 teeth (for use with52 teeth)
Type: MT
39 teeth (for use with53 teeth)
Type: MW
42 teeth (for use with54 or 55 teeth)
Type: MX
50 teeth (for use with34 teeth)
Type: MS
52 teeth (for use with36 teeth)
Type: MT
53 teeth (for use with39 teeth)
Type: MW
54 teeth (for use with42 teeth)
Type: MX
55 teeth (for use with42 teeth)
Type: MX
Note: To guarantee best shifting performance, you may only combine chainrings of the same type, e.g. MS with MS
What Sets Alchemy Apart
The best pre-owned bikes
When you buy a pre-owned bike from Alchemy Cycle Trader, you’re getting more than just a great deal. Every bike is roadworthy certified, comes with a 3-month warranty, and includes your first service free - so you can ride away with complete confidence.
Buy with confidence
In-house Active Thermography Carbon Fibre Testing for extra peace of mind on pre-owned bikes.
Learn more about our carbon testing.
Expert Servicing & Ongoing Support
Our professional workshop team is here to keep your bike running at its best long after you’ve taken it home. From routine servicing to performance tuning, our qualified mechanics ensure your ride stays smooth, safe, and ready for every adventure. Whether it’s your first free service or future maintenance, you can count on Alchemy Cycle Trader for trusted support and expert care. Learn more about our workshop services.
