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Shimano 105 Groupset Review

Shimano are well known for creating some fantastic cycling products, one of their most well known products is the 105 groupset. Newly released, the Shimano 105 groupset 2011 version is quickly becoming known as one of the best groupset within its price range.

A strong rival to Shimano more expensive model, the Ultegra, the new 2011 105 groupset is now considered to be a fantastic alternative to the more expensive models available to riders today. Available in silver or black the new 2011 versions of this groupset includes a variety of improvements, in particular an improved braking system that works effectively in wet conditions and an asymmetrical chain that ensures better shifting.

The rear derailleur included in the newly improved 105 groupset is remarkably similar to Shimano’s Dura-Ace; it remained stable and accurate even after several miles of use. The shifting of the rear derailleur was also remarkably precise and quick, working effectively with both 9-speed and 8-speed systems. The front derailleur although looks similar to previous models, the specifications of the new 105 reveal that the front derailleur is over 1mm wider apart, is shaped differently and the parallelogram features a new geometric design. These slight but significant changes results in quick accurate shifts, as well as allow for more room between the plates, so that the chain is allowed to run ‘crossed’, without rubbing.

The cassette of the 105 groupset is available in 4 versions, all versions feature new rear cassette sprockets which work well with the asymmetrical chain, guaranteeing smooth and precise shifting. Impressively, when our testers used a standard chain, rather than the supplied 5701 chain, it performed flawlessly, although it was slightly noisier. The crankset of the new 105 is arguably one of the stiffest our testers have ever tested, allowing for excellent shifting performance, while the rigidity of the crank arm ensures effectively power transfer. The inner chainring of the 105 mounts directly on to the crank arm, rather than to the middle ring like the Ultegra model. The only noticeable fault is the chainrings did appear to wear after excessive use; however, these aren’t that expensive to replace.

The bottom bracket of the 105 features new seals, while the outbound bearings posses a more modified steel alloy composition. Compatible with all Shimano Hollowtech II road cranksets, our testers commented that it performed smoothly and remained extremely durable.

Shimano have reshaped the 105 brake callipers, although when tested felt and performed the same as the previous 105 models. Although they don’t possess as high a standard as we expect, they do work well, allowing riders to effectively control their braking. The most remarkable aspect of the 105 brakes is the brake pad. Created using a new compound, the brake pads work brilliantly, especially in unfavourable weather conditions.

The levers look fantastic, as does the new internal cable routings, although despite the new PTFE lined cables this has unfortunately created undertape bulges, which causes a slight amount of friction. The shifting of the new 105 levers is light, smooth and quiet and retains previous models effective braking performance. The SPD-SL pedals of the 105 are durable, with enduring bearings and high performing.

There is no doubt that Shimano’s 105 groupset is a fantastic example of what cycling manufacturers can achieve. Although this groupset is not one of the lightest, the quality, price and performance of these components are incredible, making the Shimano 105 a great rival to other more expensive models.