Shimano Ultegra Vs Shimano 105 Groupset

Shimano is a brand that most people will be familiar with, even if they aren't particularly avid cyclists, as their components come fitted as standard to a huge number of bikes, from top end Carbon road bikes, all the way through to kids bikes. They began producing bike components in 1921, and over the decades they have established themselves as a leader in the components market. Two of the most common groupsets in Shimano's road bike lineup are Ultegra and 105, both well established, but here we're going to compare the two to see which one is best for you.

Similar Features

Both the Shimano Ultegra and Shimano 105 groupsets share several key features, which make them such a popular choice for many seasoned roadies. Here is a look at their similarities.

1. Speed and Shifting: Both groupsets are available as a 12 speed system, which offers a wide range of gears with small, smooth steps in between. This keeps shifting quick, smooth and precise for both systems.
2. Brakes: Both groupsets offer dual-pivot rim brakes as well as discs, although most road bikes now come equipped with hydraulic disc brakes. The performance from both sets of brakes is very similar.
3. Chainsets: The chainsets in both the 105 and Ultegra groupsets are constructed using Shimano’s Hollowtech II technology, which is lightweight and stiff. They offer similar crank arm lengths and chainring options, although the Ultegra also offers a specific configuration for cyclocross racing.
4. Compatibility: Components from both groupsets are designed to be interchangeable to some extent, allowing riders to mix and match components based on their needs and preferences.

Key Differences

Despite their similarities, there are distinct differences between the Shimano Ultegra and Shimano 105 groupsets, so let's take a look at where the two ranges differ.

1. Weight and Materials: The main difference is that the Ultegra components are generally lighter than those of the 105, mainly due to the use of materials like carbon fibre and titanium. This weight reduction can be reasonably significant for competitive cyclists looking to optimise every aspect of their bike’s performance.
2. Durability and Finish: Ultegra groupsets tend to have a more refined finish and can feature coatings that enhance durability and aesthetics. This gives Ultegra an arguably sleeker look compared to the more utilitarian appearance of the 105.
3. Performance Enhancements: Ultegra incorporates technology trickled down from Shimano’s top-tier Dura-Ace groupset, resulting in slightly smoother and quicker shifting performance.

Conclusion

When choosing between the Shimano Ultegra and Shimano 105 groupsets, it really comes down to the rider's needs and budget. The Ultegra groupset mainly offers a lighter weight that appeals to serious cyclists and racers who can justify the higher cost. The 105 groupset provides very similar performance and reliability at a more accessible price point, albeit at a slightly higher weight.