Your complete guide to Shimano road bike groupsets 2026 — everything you need to know

This article contains links to retailers. Purchases made after clicking on those links may help support road.cc by earning us a commission.

​​Choosing the best Shimano road bike groupset for you and your riding can be tricky if you don’t really know what you’re looking for, which is why we’ve provided a complete guide to all the options you can buy currently. A groupset is a collection of bike components designed to work together, comprising the brakes and drivetrain; essentially the parts that make the bike start and stop again. As the world’s largest manufacturer of groupsets — and by some measures the largest sporting goods company in the world — Shimano has a wide range on offer. Here’s everything you need to know. 

Whether you’re buying a new bike, or looking to build one from scratch, it’s good to know what your options are. Shimano offers a range of groupsets at different prices, and is constantly updating them too, with the newest features debuting first on its top-end groupset, Dura-Ace, before eventually trickling down through the range.

The more expensive groupsets tend to be lighter, offer smoother gear shifting and superior braking, and often come with a higher number of gears as well. At the top end of the range is 12-speed Dura-Ace, while at the entry level there is 8-speed Claris (which is currently being replaced by Shimano CUES).

Here’s an overview of all Shimano road bike groupsets, with the most expensive at the top of each grouping. The range includes mechanical groupsets for road bikes, using cables to operate the front and rear derailleurs, and electronic groupsets at the top of the range. First introduced in 2008, electronic groupsets are extremely popular, with precise gear changes, long battery life and good durability. Whether you choose mechanical or electronic ultimately comes down to budget and personal preference. If you’re on the fence between the two, we’ve got a feature that explains why you should switch to electronic shifting.

More interested in gravel riding and want a Shimano gravel-specific groupset? You’ll be wanting to read our complete guide to Shimano GRX groupsets instead. 

Shimano Dura-Ace

Shimano Dura-Ace R9270 Di2 Disc — £2,195.00 without power meter

RRP: £4,2880 with power meter; £3,630 without power meter

Dura-Ace Di2 is Shimano’s flagship groupset, boasting features and materials that make it capable of withstanding the rigours of professional racing and durable enough to last well under riders who clock over 10,000 miles per year of training and racing. Its main features include electronic shifting, hydraulic disc brakes and extensive use of high-strength materials to keep weight down and high-tech bearing and surface coatings to increase service life. And it’s now a 12-speed system.

The 12-speed version of Dura-Ace was at the same time the most anticipated and most predictable product launch of 2021, yet the most surprising. Anticipated because it was preceded by a year of leaks, patent and FCC filings and race appearances; predictable because both SRAM and Campagnolo had already introduced 12-speed systems and Shimano has been making 12-speed mountain bike components since 2018; surprising because there’s no mechanical version of 12-speed Dura-Ace, and also because Shimano introduced a 12-speed version of Ultegra Di2 at the same time. More of that later.

Here’s the executive summary of Dura-Ace R9200’s features:

• 12 sprockets out back, obvs
• Wireless communication between shifters and derailleurs; derailleurs are still wired together and to a battery
• 11-34 and 11-30 Hyperglide+ cassette options
• 54/40, 52/36, 50/34, and 46/36 chainset options
• Faster shifting: 58% improvement out back; 45% up front compared to Dura-Ace 9150
• All the ‘brains’ and charge port housed in the rear mech; no more junction box/ANT+ adaptor
• Shift button offset increased
• Smaller remote shifter buttons compared to Dura-Ace 9150
• Redesigned brake hood shape
• New tubeless carbon-rimmed wheels in 36mm, 50mm and 60mm depths, with aluminium freehub bodies
• New quieter freehub engagement mechanism with quicker take-up
• New rear hub spline pattern, but compatible with previous 11-speed Hyperglide
• Increased pad clearance in disc brakes
• Rim brakes still available, but very hard to find on new bikes
• Easier hydraulic brake maintenance
• RT-MT900 rotors from XTR mountain bike groupset now standard on Dura-Ace

Many of the new features of Dura-Ace arise from its main target use case: this is a road racing groupset. Shimano says pro riders were asking for higher top gears because peloton speeds have increased, so you can now choose a chainset with a 54-tooth big ring. Faster shifting is a marginal gain, but we can see how pro riders would want to be able to get into a bigger gear for a sprint as quickly as possible, or a lower one for a big climb.

Having a rear derailleur that will accommodate a 34-tooth sprocket means pro team mechanics no longer have to faff around to provide support riders and sprinters with very low gears for mountain stages. Previously, mechanics would fit long-cage Ultegra rear mechs so that riders whose job was simply to get over the mountains rather than race up them could save their legs on the climbs. Losing the wiring between shifters and derailleurs similarly makes life easier for pro team mechanics.

Dura-Ace is also popular with affluent recreational riders, and there are features clearly aimed at those users too. Increased brake pad clearance will help keep bikes quiet that don’t get a pro mechanic once-over after every ride, and the larger shift button offset makes it easier to use the controls while wearing winter gloves.

Shimano’s engineers say they’ve learnt their lesson from the transition from 10- to 11-speed cassettes, which left many riders with collections of wheels that didn’t work with the new gearing. They’ve also admitted that the previous Dura-Ace power meter had accuracy issues. This time, the power meter and crank design teams have worked together to ensure the power meter works properly.

Dura-Ace Di2 uses a similar shifting design to Shimano’s mechanical gear systems, but instead of pushing two levers, you push two buttons positioned next to each other. If you want to move two or more sprockets at a time, rather than swinging the lever further like you do with a mechanical system, you just keep the button pressed down. Carrying over from the previous Dura-Ace Di2, R9270 boasts extensive customisability of the shift functions through an app. 

Sadly for traditionalists, there is no mechanical Dura-Ace option anymore, and stock of the previous-gen Dura-Ace 9100 mechanical groupset has just about dried up unless you buy second-hand, so it’s no longer included in this guide. There are still rim brakes, but it’s near impossible to find full bikes being sold with a 9200 rim brake groupset, and no major retailers stock the full rim brake groupset online in the UK. 

Buy Shimano Dura-Ace R9200 Di2 if you want the state-of-the-art Shimano (and arguably the overall state-of-the-art when it comes to shifting speed and customisability).

Read our review of Shimano Dura-Ace 9200 Di2

Shimano Ultegra

Shimano Ultegra R8170 Di2 Disc — £1,145.99 without power meter
Shimano Ultegra R8150 Di2 rim brake — £1,099.99 without a power meter

RRP: £3,065.00 with power meter, £2,365.00 without power meter

Shimano Ultegra is the company’s second-tier road groupset, with all the features of Dura-Ace for a bit less money because Shimano uses less expensive materials and surface coatings. It’s long been considered the working man’s performance groupset; though you might argue that this new version, with its substantial price hike over its predecessor, yields that title to 105. 

With an identical feature set to Dura-Ace R9270 Di2, the latest Ultegra is less a budget performance groupset and more a sort of Dura-Ace SE. In the past, Ultegra offered a wider range of options than Dura-Ace. For example, you could get an 11-34 cassette where Dura-Ace only went up to 11-30, and there was an Ultegra 14-28 cassette for junior racing that was previously gear-restricted; Ultegra offered a 46/36 chainset for cyclocross racing that wasn’t available in Dura-Ace. Now, both groups offer most of the same options and all the same headline technology.

And like Dura-Ace, there’s no mechanical version… yet. Shimano initially launched 105 Di2 with no mechanical option in 2022 but U-turned and finally unveiled 105 R7100 mechanical in the summer of 2023, so who knows if the demand is there?

In mirroring Dura-Ace 9270 Di2’s technologies, Ultegra R8170 Di2 gets two new features not previously seen on a Shimano groupset at this level. The first is a power meter crankset with an RRP of a not-utterly-unreasonable £999.99. That makes these cranks an attractive option, especially as Shimano appears to have ironed out most of the bugs that affected the previous Dura-Ace power meter cranks.

The other new aspect to Ultegra is a suite of tubeless-ready wheels with full-carbon rims. Like the Dura-Ace equivalents, they have 36mm, 50mm and 60mm rims.

There is an R8150 version with rim brakes that is slightly more widely available to buy than the latest Dura-Ace with rim brakes, but again, it’s very rarely seen on full off-the-peg bikes. 

Read our review of the Shimano Ultegra R8170 Di2 Disc Groupset

Shimano 105

Shimano 105 R7100 Di2 Disc – £890

RRP: £1,730.00

In 2022, Shimano released a groupset it said would never exist. Yep, Di2 has made its way to the 105 level, bringing electronic gearing in at the most affordable level Shimano has ever offered.

105 has a reputation of being reliable and more attainable than its big brothers, Dura-Ace and Ultegra. Well, in 2022 it turned 40, and to celebrate there was a new generation R7100… but unfortunately for some, mechanical shifting and rim brakes weren’t invited to the party.

Along with the move to electronic gearing comes a move to 12-speed, but just as we have seen with Ultegra and Dura-Ace, the new 12-speed cassettes can be used on existing 11-speed freehubs, so you shouldn’t have to upgrade your wheels.

By moving to a 12-speed cassette, Shimano says it has managed to provide both the high and low gearing that riders want, along with an intelligent progression of gear steps in between.

The new crankset is available in 50-34 and 52-36 varieties, features Hollowtech II technology and is available in 160, 165, 170, 172.5 and 175mm crank lengths.

Those chainsets are paired with just two cassette options: 11-34T and 11-36T.

The rear derailleur has a longer cage than on the more expensive models to cope with the larger range of cassettes, and just like on those models, this is where the brains of the system are housed. It’s also here that you will find the battery charging point as well as the wireless connection to Shimano’s STI shifters and other third-party devices.

Unlike Dura-Ace and Ultegra, there are no rim brakes at the 105 Di2 level, so it’s disc brakes only if you’re going for this groupset. 

Read our review of the Shimano 105 R7100 Di2 groupset

Shimano 105 R7100 mechanical 

Shimano 105 R7100 Mechanical Disc – £599.00

RRP: £925

Shimano’s 12-speed 105 R7100 groupset is the brand’s first 12-speed mechanical road groupset, introduced after the above Di2 (electronic) version. This mid-level mechanical 12-speed option is intended to bridge a gap in Shimano’s range and offers an alternative for those who prefer cable-actuated shifting. 

You used to (and sometimes still do) see a lot of entry-level and mid-range bikes specced with mechanical Shimano 105. It’s the workhorse of the Shimano groupset range and features on bikes covering a really wide price band. Sometimes it gets mixed with other branded parts to meet key price points, but a full 105 mechanical groupset is definitely something to look for, as it really has very few weaknesses.

Like the Di2 version, Shimano 105 R7100 Mechanical is disc brake-only, and features a redesigned gear range with the ability to accommodate (officially) up to an 11-36T cassette. The wider gearing range is arguably the biggest change from the 11-speed version, other than the new look and extra cassette cog.

Like the previous 11-speed option, the new 105 Mechanical 12-speed RD-R7100 rear derailleur uses Shimano’s Shadow RD technology, meaning that it doesn’t extend as far outboard of the bike as a more conventional design. This is intended to reduce the possibility of damage and, Shimano says, means that the derailleur doesn’t hit the chainstay in rough riding conditions.

The 105 R7100 Mechanical 12-speed groupset is priced at £925, making it much less expensive than its electronic counterpart. To quote Shimano: “The new, lightweight Shimano 105 Mechanical groupset offers premium mechanical shifting, which means riders can capture that natural riding feeling without worrying about battery levels – while still enjoying the comfort and range of a premium 12-speed groupset.”

Read more: Shimano unveils 12-speed mechanical 105 R7100 groupset to sit alongside Di2

Shimano CUES

RRP: various

CUES (which stands for Creating Unique Experiences) is Shimano’s new approach to more affordable components. The aim is to simplify and unify the lower-end Shimano groupsets by creating a single, cross-compatible product range for 9, 10, and 11-speed systems. This means that parts can be mixed and matched, which makes sourcing and fitting replacements much simpler. On the road side of things, it affects everything below Shimano’s latest 12-speed 105 groupset.

CUES sees Shimano amalgamate its mid and budget-range city, touring and mountain bike groupsets (everything for flat handlebars) into one family of interchangeable 9-speed, 10-speed and 11-speed components. There are no rim brakes in the range, just hydraulic disc brakes, and you can either have a single chainring or a 2x set-up, leaving no room for the almost extinct triple chainset.

> Read more: Shimano unveils new cross-compatible CUES groupsets for city, touring and mountain bikes, consolidating Claris, Sora and Tiagra

CUES is also taking over from the Tiagra, Sora, and Claris road groupsets, although these older generation components will be available for a few more years. Drop bar-specific CUES, aimed at recreational road and gravel riders, also has nine, 10, and 11-speed options, and you can choose between hydraulic and mechanical disc brakes, and single and double chainsets.

You can buy a U6000 Series CUES chainset with Hollowtech II hollow-forged cranks and either 50/34T or 46/32T chainrings, and the U6000 10-speed rear derailleur can handle a largest sprocket size of 39T. The CUES U6000 10/11-speed rear derailleur designed for 1x systems can cope with a maximum sprocket size of 50T.

We’ve yet to see CUES take over from the previous groupsets, although the transition is certainly underway.

Shimano Tiagra

Shimano Tiagra 4700 Rim Brake — £375

Shimano’s fourth-tier groupset last had a major update for 2016, and Shimano last announced some tweaks and extra options in 2019. Tiagra is being phased out so don’t expect any more updates, although there’s still stock out there with retailers.

The 2019 changes brought it a similar appearance to the Shimano 105 R7000 above it, with the same four-arm crankset and new shifters, and the gear and brake cables hidden underneath the bar tape. As well as the drop-bar kit, Tiagra is available with flat bar levers and shifters, so expect to see it on commuter and city bikes as well.

The 2019 tweaks include new hydraulic STI units with a better lever shape and improved shifting, and an option of a 48/34 chainset.

Tiagra retains the 10-speed configuration, though, and that could be a deciding factor if choosing between Tiagra and 105. The 52/36t, 50/34t and 50/39/30t triple chainset options provide plenty of range, and 52/36t is just fine for most racers.

>>Read our first ride review of the Shimano Tiagra 4700 groupset

Shimano Sora

Shimano Sora R3000 — £399

Shimano’s Sora groupset is also being phased out, having last had a major facelift way back in 2017. It now looks fairly similar to the higher mechanical groups in the range visually, with its four-arm chainset, and either a grey or black finish. It’s a 9-speed groupset, but it’s still excellent for the money and does 90% of what the more expensive groupsets do; it just weighs a bit more.

You get proper Shimano Dual Control gear shifters, with the brake lever moving the chain in one direction and the smaller lever moving it the opposite way. That’s essentially the same system as used to be on Dura-Ace a few years ago. You have double and triple chainset options, and the rear derailleur will accommodate an 11-32t cassette along with a 50/34t compact chainset.

Other similarities with the more expensive groupsets include the Hollowtech II bottom bracket, with the bearings sitting outboard of the frame.

Shimano Claris

Shimano Claris R2000 — from £229.99

Like Tiagra and Sora, Claris is on the way out. It was Shimano’s most affordable ‘proper’ road bike groupset, and could be found on road bikes priced at around £1,000 and below. The most recent update to the groupset saw Claris get the four-arm, fixed-axle chainset design of higher groupsets, giving it a more expensive feel.

Claris never got beyond 8-speed, although you could choose between a 50/34 compact double chainset system and a 53/39/30 triple, along with an 11-34 cassette. 

>>Read our review of the Claris-equipped Cube Attain 

For more details on Shimano groupsets straight from the source, check out Shimano’s website.

Explore the complete archive of reviews of groupsets on road.cc