Shimano Road and Gravel Groupsets: Claris to Dura-Ace Compared

Shimano’s road groupsets, from entry level up, are Claris (8-speed), Sora (9), Tiagra (10, and 11 on the new 2026 R4000), 105 (12, mechanical or electronic Di2), and Ultegra and Dura-Ace (12, Di2 only). For gravel there’s GRX. Moving up the range adds gears until you reach 105; beyond that, you’re mostly paying for lower weight and nicer finishes, not better shifting. For most riders, 105 is the sweet spot.

The lineup at a glance

Data from Shimano’s September 2026 Line-up Chart (version 2.6):

The same chart still lists the 11-speed 105 R7000 and Ultegra R8000, plus 11-speed (RX810, RX600) and 10-speed (RX400) GRX. You’ll find them on used bikes and some new ones. The most common chainrings across the range are 50/34 (compact) and 52/36 (mid-compact); some Dura-Ace and Ultegra cranks also come in 46/36 or 54/40, and Claris in 46/34.

Approximate weight

Shimano doesn’t publish a complete-groupset weight for every line, and every figure depends on the build (chainrings, cassette, rotors, power meter). Groupsets are usually quoted in grams, so that’s what we list first. The numbers we could verify:

Ultegra to Dura-Ace saves about 140 g (5 oz); 105 Di2 to Ultegra, about 370 g (13 oz). If you want to go faster, better tires or a more aerodynamic position usually buy you more for the same money.

Which groupset is right for you

Claris R2000 (2×8). The entry-level group, found on budget road bikes and many drop-bar commuters. It shifts well and is cheap to maintain, but with 8 cogs the jumps between gears are big. Good for getting started or riding to work.

Sora R3000 (2×9). One more cog and shifters that look like the higher-end ones. A fit for weekend riders with no racing plans. It takes an 11-34 cassette, enough for most climbs with a 34-tooth small ring.

Tiagra 4700 (2×10) and Tiagra R4000 (2×11). The 4700 has been the groupset on countless entry-level road bikes for years. The new R4000, launched in March 2026, moves to 11 speeds, switches to hydraulic disc brakes and debuts an 11-36 cassette (a 327% range). According to TOUR magazine, it replaces the 4700, which goes out of production in early 2027. For riders who want an affordable disc bike with low gears for the mountains.

105 R7100 (2×12, mechanical or Di2). The benchmark. It’s the only 12-speed road groupset with a mechanical version, and its Di2 version brings electronic shifting to mid-priced bikes. It takes an 11-36 cassette, the lowest gearing in Shimano’s road range. For riders who train regularly, do gran fondos or want a bike that lasts for years.

Ultegra R8100 (2×12 Di2). Works the same as Dura-Ace, with a bit more weight. For demanding riders and amateur racers. Cassettes up to 11-34.

Dura-Ace R9200 (2×12 Di2). The pro peloton groupset: the lightest, with an optional power meter and 54/40 chainrings. Compared with Ultegra, the main difference is weight, not shifting precision.

GRX (gravel). Lower gearing, shifters shaped for dirt roads and clutch derailleurs that keep the chain in place over bumps. The 12-speed versions are RX820 and RX610 (mechanical, 1× or 2× with 48/31 chainrings) and their Di2 counterpart; the RX717 is a 1×12 Di2 that runs mountain bike cassettes up to 10-51. If you’re torn between 1× and 2×, see our guide to 1x vs 2x drivetrains.

Mechanical or Di2

With Shimano, you only get to choose on 105 (and GRX): 12-speed Ultegra and Dura-Ace are electronic only. Current Di2 is semi-wireless. The shifters have no wires and run on a CR1632 coin cell that Shimano says lasts 1.5 to 2 years, while the derailleurs run off an internal BT-DN300 battery (3.7 Wh, 52 g / 1.8 oz) that charges through the rear derailleur. We compare the pros, cons and costs in our guide to mechanical vs electronic shifting.

Compatibility: what to know before you mix parts

• Don’t mix speeds. 11-speed shifters won’t run a 12-speed derailleur properly, or vice versa. Cassette, chain, derailleur and shifters must all have the same number of speeds.
• Freehub body. According to Shimano’s compatibility chart, 12-speed road cassettes fit both the 11-speed road freehub (HG L) and the 12-speed one (HG L2). We explain it in our guide to changing a cassette and in the freehub body chart.
• Largest cog. Every derailleur has a maximum cog size: 34 teeth on Dura-Ace and Ultegra Di2, 36 on 105. If you want an 11-36, your derailleur has to support it.
• Chain. Shimano calls for its 12-speed chains (CN-M9100, M8100, M7100 or M6100) with its 12-speed cassettes.
• Di2 across generations. 12-speed Di2 uses a different wiring and battery system from 11-speed; you can’t mix them without swapping parts.

How to choose

1. Set a budget for the whole bike, not the groupset: stepping up a groupset level usually comes with a better frame and wheels.
2. Decide between disc and rim brakes. All the new groupsets are disc; rim brakes are left to older series.
3. Look at the gearing before the tier: a 105 with 50/34 and 11-36 climbs better than a Dura-Ace with 52/36 and 11-30. Compare them with the gear ratio calculator and our guide to gearing for climbing.
4. Choose mechanical or Di2 based on how you look after your bike and how much you want to spend.
5. Think about replacement parts. 105 chains and cassettes cost much less than Dura-Ace ones and last about as long.

The names of every drivetrain part in six languages are in the drivetrain glossary.

Updated October 19, 2026 ·Report an error on this page