Road Groupset

The new four-arm chainring bolt circle is not radially symmetric. Instead, Shimano says the arms are more aligned with how forces are transmitted during the pedal stroke, adding more material where it's needed and removing it where it isn't. Replacement chainrings will almost certainly be very expensive

Shimano Dura-Ace 9000 group review

GBP £1854.91 RRP USD $2699.92

The rear derailleur pulleys rotate on hybrid ceramic bearings. We're disappointed that SRAM hasn't integrated the excellent Gutter seal technology from its newer bottom brackets, though

SRAM Red 2012 group review

GBP £1899.99 RRP USD $2575.00

Shimano's Ultegra Di2 group replicates the shift performance of the top-end Dura-Ace Di2 at a much lower price, if you can accept modest downgrades in weight and bulk

Shimano Ultegra Di2 review

GBP £1124.92 RRP USD $1600.00

Shimano Tiagra 10-Speed transmission

Shimano Tiagra 10-speed transmission review

GBP £333.95 RRP

The Super Record EPS groupset offers laser-accurate shifting with rewarding lever feedback and trademark Campagnolo flair

Campagnolo Super Record EPS – First ride review

Shimano Ultegra Glossy Grey

Shimano Ultegra Glossy Grey groupset review

GBP £949.99 RRP

SRAM offers a new level of budget-based performance with Apex, but there are concessions made, namely crank stiffness and braking performance

SRAM Apex road groupset review

GBP £539.49 RRP USD $871.00

Shimano 105 2011 groupset

Shimano 105 2011 groupset review

GBP £588.91 RRP USD $1024.85

Athena's elegant polished aluminium crankset

Campagnolo Athena groupset review

Force takes a page from the Red playbook with the giant graphics on the back of the non-driveside crankarm

SRAM Force road groupset review

GBP £1060.00 RRP USD $1311.00

Shimano have infused the latest Ultegra 6700 group with many of the features introduced on Dura-Ace 7900

Shimano Ultegra 6700 groupset review

GBP £849.9 RRP USD $1399.00

Rich Tyler takes his Ultegra 6700 equipped Pinarrelo for a spin

First ride: Shimano Ultegra 6700 review

GBP £849.9 RRP USD $1395.08

Shimano's latest Dura-Ace group is a big step forwards in some ways, but not in others

Shimano Dura-Ace 7900 group review

GBP £1699.99 RRP USD $2705.00

Campagnolo Chorus Ultra-Torque Chainset

Campagnolo Chorus 11-speed groupset review

GBP £1079.92 RRP USD $1499.00

SRAM's revamped Rival group makes it an even better value with performance that nips at the heels at Red but at less than half the price.

SRAM Rival groupset review

GBP £561.33 RRP USD $919.00