Bike Clinique

Shimano 105 5800 Long Cage Rear Derailleur

£39.99 GBP

Sale Sold out

Tax included.

Product variants

Pay with Cycle to Work

We accept Cyclescheme, Gogeta and Green Commute Initiative.

Buy this part (and fitting) through Cycle to Work: Cyclescheme, Gogeta or Green Commute Initiative. No bike needed. Subject to your employer's scheme.

Ask us for a written quote showing the exact items and price.
Apply through your employer's provider (Cyclescheme, Gogeta or GCI) using our quote. Your employer approves it.
Collect from our workshop at Unit 1, The Swan Centre, Rosemary Road, London SW17 0AR. Bring your certificate or voucher code.

Ask us for a Cycle to Work quote How Cycle to Work works at Bike Clinique

Savings depend on your tax band and your employer's scheme. Cyclescheme and Gogeta say you can save up to 47%; GCI says 28% to 47%. We quote the exact total, because Cyclescheme doesn't allow topping up a certificate with your own money. The bike must be for you, not a child. Cyclescheme and GCI exclude cameras and GPS bike computers.

Shimano 105 Pure R7120 2x12 Mechanical Groupset – Fitted by Bike Clinique

If you want pro-level performance, reliability, and a modern 12-speed drivetrain—without the premium price tag—Shimano 105 Pure R7120 is the perfect upgrade for your road bike. At Bike Clinique, we’re fully manufacturer-trained and have extensive experience fitting Shimano 105, so you get a flawless install, precise setup, and ongoing support.

Why Choose 105 Pure R7120 at Bike Clinique?
Shimano 105 Pure R7120 brings many of the features from Dura-Ace and Ultegra to a more accessible package. You get a crisp, wide-range 12-speed drivetrain, hydraulic disc brakes, and all the durability you expect from Shimano. The slightly heavier materials don’t compromise on function—this is a groupset built for real-world riding, big climbs, and everyday reliability.

What’s Included:

Shifters/Brakes: 105 ST-R7120 dual-control levers with BR-R7170 flat-mount hydraulic calipers. Slim, comfortable, and easy to modulate, with individually adjustable reach.
Rotors: Ultegra RT-CL800 Center Lock, 160mm front and rear, with IceTech FREEZA cooling for fade-free, quiet braking on any descent.
Crankset: 105 FC-R7100, 2x12-speed, your choice of 50-34T or 53-36T chainrings. Hollowtech II arms for stiffness and low weight.

Crank Lengths: 160, 165, 170, 172.5, 175mm (same as Di2).

Front Derailleur: 105 FD-R7100, braze-on, 2x12-speed, with toggle link construction for fast, precise, cable-actuated shifting and easy adjustment.
Rear Derailleur: 105 RD-R7100, 2x12-speed, Shadow RD design for crisp, stable shifting and low-profile protection. Compatible with 11-34T and 11-36T cassettes.
Cassette: 105 CS-HG710, 12-speed, 11-34T or 11-36T, Hyperglide for seamless, quiet shifting under load. Compatible with standard 11-speed Shimano Road freehub bodies.
Chain: SLX/105 CN-M7100, 12-speed, 126 links, with chain lock and SIL-TEC coating for quiet, smooth, and long-lasting performance.

Specs at a Glance:

2x12-speed (mechanical shifting)
Crank Lengths: 160, 165, 170, 172.5, 175mm
Chainring Options: 50-34T, 53-36T
Cassette: 11-34T or 11-36T
Brake: Hydraulic disc, flat mount, 160mm rotors
Freehub: Shimano 11-speed Road
Front Derailleur Mount: Braze-on
Color: Black

How Does It Ride?
Shimano 105 Pure R7120 is all about confidence, comfort, and reliability. The wide-range 12-speed drivetrain makes tough climbs easier and keeps your cadence smooth on any terrain. Braking is powerful, fade-free, and quiet—even on long descents. Riders love the crisp shifting, improved ergonomics, and the peace of mind that comes with a pro-level install.

Why Trust Bike Clinique?
With full Shimano manufacturer training and years of hands-on experience, you get expert advice, a perfect install, and ongoing support. We’ll check your frame compatibility, talk through gearing and setup options, and provide a clear estimate before any work begins.

Ready to upgrade your ride with 105 Pure?
Book a consultation, schedule your upgrade online, or call us on 07951125843. Pop into our Wimbledon workshop for a demo, get honest, jargon-free advice, and let us help you unlock the best of Shimano 105 for your next adventure.