There are a couple of big changes out back. First, you get a carbon pulley plate that brings down the weight (16g overall). Second, the new rear mech is compatible with cassettes up to 28T. The total capacity (the tooth difference between the two chainrings plus the tooth difference between the biggest and smallest sprockets) is now 33T – so you’re unlikely to feel the need for a triple. Once set up and bedded in, we had no troubles at all with shifting either up or down the cassette – all very precise and very definite in both directions with no need for any tweaking during the test period. What more can you ask for?
Read the component reviews here:
Chainset STI Levers Rear mech Front mech Brakes
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Dave is a founding father of road.cc and responsible for kicking the server when it breaks. In a previous life he was a graphic designer but he's also a three-time Mountain Bike Bog Snorkelling world champion, and remains unbeaten through the bog. Dave rides all sorts of bikes but tends to prefer metal ones. He's getting old is why.