Shimano 105 R7120 12 Speed Disc Groupset – Mechanical Hydraulic Road Bike Groupset
Shimano 105 R7120 12 Speed Disc Groupset – Mechanical Hydraulic Road Bike Groupset
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Shimano 105 R7120 12 Speed Disc Groupset
Reliable 12-Speed Mechanical Disc Groupset for Modern Road Bikes
The Shimano 105 R7120 12 Speed Disc Groupset brings advanced 12-speed road performance to riders seeking reliability, efficiency and value. Designed around Shimano’s proven mechanical shifting platform and powerful hydraulic disc braking system, the R7120 groupset delivers smooth gear changes, consistent braking and dependable drivetrain performance for everyday road cycling.
Inspired by technologies from Shimano’s higher-tier groupsets, the 105 R7120 features improved gear range, refined ergonomics and durable components built to handle long training rides, sportives and endurance cycling. With 12-speed capability and hydraulic disc braking, this groupset provides modern road bike performance without the complexity of electronic shifting.
Key Features
12-Speed Mechanical Shifting
The Shimano 105 R7120 drivetrain provides precise and reliable mechanical gear changes with improved gear spacing for smoother cadence control across varied terrain.
Hydraulic Disc Brake Performance
Powerful hydraulic disc brakes offer consistent stopping power and enhanced modulation in wet or dry conditions. This improves rider confidence on descents and during high-speed riding.
Wide Range Cassette Options
The 12-speed cassette offers versatile gearing options ideal for climbing, endurance riding and fast road efforts. Riders benefit from improved gear progression and flexibility.
Durable Road Cycling Components
Built with Shimano’s renowned engineering standards, the 105 groupset offers long-lasting durability and dependable performance for high-mileage training and everyday use.
Comfortable Ergonomic Shifters
The updated hood design improves hand comfort and control, providing a confident grip during long rides and varied road conditions.
Pro-Level Technology at an Accessible Level
Borrowing design cues from Ultegra and Dura-Ace platforms, the R7120 delivers excellent drivetrain efficiency and braking performance at a more accessible price point.
Specifications
Series: Shimano 105 R7100 Series
Model: R7120
Speed: 12-speed
Shifting System: Mechanical shifting
Brake Type: Hydraulic disc brake
Crankset: Hollowtech II (multiple crank lengths available)
Cassette Compatibility: Shimano 12-speed road cassette
Chain Compatibility: Shimano 12-speed chain
Bottom Bracket: Compatible with Hollowtech II systems
Intended Use: Road cycling, endurance riding, sportives, training rides
Why Choose the Shimano 105 R7120 12 Speed Disc Groupset?
Reliable 12-speed mechanical shifting performance
Powerful hydraulic disc braking for all-weather riding
Durable components designed for high mileage
Wide gear range suitable for varied terrain
Excellent balance of performance, reliability and value
Ideal upgrade for modern road bike builds
The Shimano 105 R7120 12 Speed Disc Groupset is perfect for riders who want dependable shifting, strong braking performance and modern 12-speed gearing. Whether building a new road bike or upgrading an existing setup, this groupset offers the performance and reliability that Shimano 105 is known for.
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Specification:
Specification:
- Speeds: 13-Speed
- Drivetrain: 1× Electronic (eTap AXS)
- Cassette Range: 10–46T
- Crankset: 42T Direct-Mount, DUB Spindle, Power Meter Crank
- Rear Derailleur: XPLR AXS, Clutch-Equipped
- Brakes: Hydraulic Disc, Flat-Mount
- Chain: Flattop 13-Speed
- Battery: SRAM AXS Rechargeable
- App Compatibility: SRAM AXS
Who's it for?
Who's it for?
Designed for gravel racers, endurance riders, and bikepackers seeking wireless precision, wide-range gearing, and dependable braking in a simplified 1× platform.
Want this professionally fitted?
Want this professionally fitted?
The Bike Lab offers expert installation and servicing in and around Surrey and West Sussex. Book today, enquire at TheBikeLabWorkshop@gmail.com or view our services.
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FAQ
How long does a Gold Service take?
As this is a full strip down and rebuild, it usually takes slightly longer than our other services. Most Gold services are completed within 1 to 2 weeks depending on workload and any additional parts required.
Is this service suitable for older bikes?
Yes. Older bikes often benefit the most from a full strip down, especially if they have not had a thorough service in some time.
Will parts be replaced automatically?
No. We will always contact you before replacing any worn or damaged parts. No additional work is carried out without your approval.
What is the difference between Silver and Gold?
The Gold Service includes a full strip down and rebuild, along with headset and bottom bracket removal and re-greasing. Silver focuses more on adjustment, wheel truing, and drivetrain cleaning.
How often should I book a Gold Service?
For regularly ridden bikes, once a year is a good guideline. If you ride in harsh conditions or high mileage, you may benefit from it more frequently.