Shimano 105 R7100 12S Disc group

Shimano 105 12-Speed Mechanical Groupset

Elevate your performance with SHIMANO 105

SHIMANO 105 is a mid-range road groupset that inherits racing technologies and design to deliver a unique balance of performance, reliability, and affordability. With its updated interface and 12-speed mechanical shifting, Shimano 105 brings a fresh level of precision and control to road cycling.

Optimised Grip & Comfort

The redesigned Dual-Control levers provide:

• Ergonomic shape for a wide range of hand sizes

• Reduced distance between hood and lever

• Improved control with less effort

• More efficient braking and shifting performance

Built for Every Rider

A drivetrain designed for versatility and real-world riding:

• Sub 1:1 gear ratio for steep climbs

• Smooth and controlled effort management

• Wide gearing range for different riding styles

• Confident performance on varied terrain

Advanced Braking Performance

Smooth, powerful, and reliable braking

• New piston design for improved braking efficiency

• Increased pad clearance (10%) reduces rotor rub

• Consistent modulation and control

• Low-maintenance hydraulic system

Key Components & Features

Crankset — FC-R7100

• HOLLOWTECH II construction

• Excellent balance of stiffness, weight, and efficiency

• Q-factor: 148 mm

• Speed: 2x12

• Chainline: 44.5 mm

• Compatible bottom brackets: SM-BBR60 / SM-BB72-41B

Cassette (12-Speed)

• Progressive gear ratios for smooth cadence

• Optimised for acceleration and efficiency

• Compatible with 12-speed drivetrains and 11-speed road hubs

• Aluminium spider + steel sprockets

Shifters & Brakes — ST-R7120 + BR-R7170

• Mechanical 12-speed Dual Control levers

• Improved ergonomics and reach

• Adjustable lever travel

• Hydraulic disc brakes with Shimano mineral oil

• Compatible with ICE TECHNOLOGIES pads

Front Derailleur — FD-R7100

• Smooth, low-effort shifting

• Easy and precise adjustment

• Integrated cable tension adjustment

• Max chainring: 50–52T

• Total capacity: 16T

Rear Derailleur — RD-R7100

• SHIMANO SHADOW RD design

• Stable and precise shifting

• Wide gear compatibility (up to 36T cassette)

• Total capacity: 41T

Chain — CN-M7100

• Designed for 12-speed systems

• Improved chain retention and engagement

• Durable and efficient performance

• Non-reusable quick link