Road Groupsets
Shimano Dura-Ace
At the top of the pile is Dura-Ace, Shimano's premium road groupset and the go-to choice for professional racers. The latest version, R9200, launched earlier this year and is Shimano's first 12-speed road groupset. Plus, it is now semi-wireless and electronic-only.
Amongst the features that roadies have grown to love with Shimano's electronic groupsets is 'Synchronised Shift', a feature originally taken from Shimano MTB Di2 systems. Synchronised shift allows the rider to change gears on both the front and rear derailleurs rapidly from a single shift, simplifying choice and reducing the time lost during racing when you're searching for the right gear. You can go full or semi synchronised, giving you total control over your gears and taking your riding up to the next level. The tidy, compact control box and Bluetooth ANT connectivity give you access to Shimano E-tube, meaning that you're able to refine your gearing to your exact requirements directly from your phone. The future is now and it's called Dura-Ace.
As you'd expect with their halo groupset, the rest of the Dura-Ace range is of the very highest quality with no expense spared whether you choose rim or disc brakes, plus power meters, shimano derailleurs and shifters.
Shimano Ultegra
Launched alongside the new Dura-Ace in 2021, Shimano's latest Ultegra R8100 groupset is 12-speed, electronic only, semi-wireless and available in disc brake or rim brake variations, and offers very high performance at a more wallet-friendly price point. Due to the 'trickle down' effect of technology, the difference between Dura-Ace and Ultegra becomes ever smaller, with the new Ultegra design looking particularly similar to Dura-Ace and offering many of the same features such as carbon brake levers and shadow rear-derailleur.
The weight penalty is minimal, meaning that Ultegra has become the favourite of the amateur racers and all-rounders that require fantastic performance but aren't as fussed about shaving off as many grams as possible. Ultegra is ridiculously versatile, allowing cassettes from 11-23t all the way to 11-34t and ensuring Ultegra can be utilised by racers and adventure riders and everyone else in between! Ultagra is Shimano's entry level for electronic shifting and is a brilliant option for those looking for their first bike with Di2.
Shimano 105
The workhorse of the group and the middle point of the road hierarchy, the 105, a shimano 11 speed cassette is the perfect groupset for the commuter, weekend rider or beginner in the world of road racing or TT.
Upgraded to 11-speed in 2014, 105 is ideal for most riders, with all the reliability you'd expect from Shimano, without stretching your budget to Ultegra or Dura-Ace. Due to its versatility, 105 components can be found on bikes across a plethora of price points and are often combined with other, cheaper components. Last updated in 2019, 105 received a facelift with a sleek, angular look and is now lighter and shifts more smoothly than ever before, making this amazing price point groupset a serious contender when it comes to many rider's drivetrain selection.
Shimano Tiagra
Updated a few years ago, Tiagra is visually very similar to the previous iteration of 105. Other than weight, the major difference between the two sets is the gearing. Tiagra runs on a 10-speed set-up, resisting the market shift to 11-speed in order to offer a groupset that provides slightly less gears but increased savings on overall cost and weight.
Tiagra is the groupset for the leisure rider, weekend warrior or beginner on the road, giving reliable and quick performance in an easy to use, all-round package. There's also a Tiagra system for flat-bar shifters, so expect to see it fitted onto city and commuting bikes as well as road bikes in the very near future!
Shimano Sora
Offering affordable performance and value, Shimano Sora offers all mod-cons (Dual control shifters, Hollowtech II bottom bracket etc) as the 4 groupsets above it in the range. Sora offers approximately 80-90% performance of the highest end groupsets, matching many of them visually.
The key difference is the additional weight of a Sora system and the fact that it's a 9-speed - significantly reducing the spread of gears and allowing less customization of cassettes to suit different riding styles/disciplines. That being said, for its target market of sub-£750 road riders, Sora offers good value for money when you consider how much bang you get for your buck.
Shimano Claris
Claris is the most affordable of the Shimano complete road groupsets, aimed solely at those shopping in entry level, sub-£500 road bike market. Sporting dual-control levers like the Tiagra above, Claris keeps things very simple with a triple, cyclocross or compact cassette set-up that focuses on low gear ratios to make hills relatively easy.
The older yet still very reliable Octolink bottom bracket is still featured on Claris but considering the huge technology advances of the last couple of years, expect to see the trickle down effect in full force when a new version of the Claris is developed.