Shimano 105 R7100 Di2 12-Speed Groupset

The Shimano 105 R7100 Di2 12-Speed Groupset presents itself as an affordable yet robust option that doesn't compromise significantly on performance compared to higher-priced models, delivering solid shifting and durability suitable for various cycling needs.

The Shimano 105 R7100 Di2 12-Speed Groupset offers impressive shifting, almost on par with higher-end groupsets like Ultegra or Dura-Ace. It's responsive and tuneable via the e-tube app, with minor issues related to feeling the gear shifting due to the rear cassette's build quality.

The 105 Di2 groupset weighs around 2562 grams, heavier than Ultegra (2349 grams) and significantly more than Dura-Ace (2058 grams). The weight difference is evident, especially in the front derailleur and cranks, where the 105 model seems to carry a noticeable penalty.

In terms of pricing, the Shimano 105 Di2 Groupset costs around $3200, while Ultegra goes for approximately $4300, and Dura-Ace is priced at $6749. The 105 groupset offers considerable value for its performance compared to its higher-priced counterparts.

The groupset's design closely resembles the higher-tier Shimano groupsets, with similar looks and ergonomics. However, there are slight differences, such as the bulkier front derailleur in the 105 model.

The Shimano 105 Di2 Groupset performs impressively in terms of durability and ride quality. Despite being a budget-friendly option, it provides a reliable and sturdy build, suitable for racing and regular cycling activities.

The setup and adjustment of the 105 Di2 Groupset are user-friendly, allowing for tuning through the e-tube app. While some components may benefit from potential upgrades like rotors or cranks for specific preferences, the groupset functions well straight out of the box.

The Shimano 105 Di2 Groupset presents itself as an advanced electronic system within the 105 lineup, offering precise shifting and a contemporary design. However, its higher cost and susceptibility of key components to damage could impact its overall value proposition for some cyclists.

The Shimano 105 Di2 Groupset offers precise shifting, similar to higher-tier groupsets like Ultegra and Dura-Ace. It features semi and full synchronization modes, making gear changes smoother and reducing abrupt gear ratio shifts.

The total weight of the groupset amounts to around 2967 grams, slightly heavier than the claimed weight from Shimano, yet still relatively lightweight for an electronic groupset.

Priced at £1,000, the Shimano 105 Di2 Groupset might seem expensive for an electronic option within the 105 range, lacking backward compatibility with older 11-speed components, potentially necessitating a complete upgrade.

The groupset design maintains similarity to the previous 105 components, showcasing a sleek appearance. However, it may not introduce any significant aesthetic or structural alterations compared to its predecessors.

While the groupset looks and feels well-made, there are concerns about the vulnerability of the rear derailleur, which holds the brain of the system, potentially leading to costly repairs if damaged.

The setup involves a mix of wireless and semi-wireless components, utilizing cables to connect the derailleurs to the battery. It eliminates the need for cable routing through the shifters, making it a relatively straightforward installation process.

The Shimano 105 R7100 Di2 12-Speed Groupset brings affordability and several features from its premium siblings but sacrifices some cutting-edge technology, making it a formidable option but not without compromises, especially compared to its closest competitor, SRAM Rival.

The Shimano 105 R7100 Di2 12-Speed Groupset offers smooth and reliable shifting, albeit not as seamless as the higher-tier Ultegra and Dura-Ace models due to the absence of HyperGlide Plus technology.

Weighing approximately 100 grams less than its competitor SRAM Rival, the 105 R7100 Di2 Groupset showcases a lighter build in a similar configuration, offering a competitive weight advantage.

Priced around £1700 in the UK, the groupset presents a considerable investment compared to SRAM Rival, with an aesthetic design that elevates the bike's appearance, resembling Ultegra and Dura-Ace but at a more affordable cost.

The design language follows the footsteps of higher-tier groupsets, boasting integrated wiring, improved ergonomics with rubberized hoods offering a premium feel, and an overall sleek appearance that enhances the bike's class.

While maintaining reliable braking performance akin to the mechanical version of 105, this groupset lacks new Servo Wave technology found in Ultegra and Dura-Ace, resulting in slightly diminished braking modulation and power transmission.

The setup features simplified wiring, ensuring an integrated look with minimal visible cables, requiring additional hoses for lever-to-caliper connection, a standard practice in high-end road groupsets.