New Shimano 105 announced: Mechanical, 12 speed, disc brake only

Shimano 105 mechanical
(Image credit: Shimano)

Shimano has today announced not one but two brand new groupsets: the cost-conscious performance road groupset, 105 mechanical; and the similarly-positioned gravel groupset, GRX. 

We'll cover the new GRX launch in a separate story but here we're going to make like a good set of tyres and stick to the road, focussing on 105. 

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Chainset50/34T & 52/36T with crank arms at 160mm, 165mm, 170mm, 172.5mm or 175mm765.6g (50/34T)
Cassette11-34T & 11-36T361g (11-34T)
Rear derailleurn/a96g
Front derailleurn/a249g
Shiftersn/a612g (pair, with brakes)
Brakesn/aAs above
Brake rotors140mm / 160mm (mix)285.6g
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Shimano 105 Chainset (Hollowtech II)$179.99€182.99£159.99
Cassette 11-34T$65.99€76.99£69.99
Cassette 11-36T$65.99€76.99£84.99
Front derailleur$46.99€49.99£41.99
Rear deraulleur$64.99€61.99£59.99
Brakeset (shifters, hoses, calipers)$354.99€319.99£179.99
Brake rotor 140mm (each)$45.99€65.98£29.99
Brake rotor 160mm (each)$45.99€89.98£29.99

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Josh Croxton
Associate Editor (Tech)

Josh is Associate Editor of Cyclingnews – leading our content on the best bikes, kit and the latest breaking tech stories from the pro peloton. He has been with us since the summer of 2019 and throughout that time he's covered everything from buyer's guides and deals to the latest tech news and reviews. 

On the bike, Josh has been riding and racing for over 15 years. He started out racing cross country in his teens back when 26-inch wheels and triple chainsets were still mainstream, but he found favour in road racing in his early 20s, racing at a local and national level for Somerset-based Team Tor 2000. These days he rides indoors for convenience and fitness, and outdoors for fun on road, gravel, 'cross and cross-country bikes, the latter usually with his two dogs in tow.