Shimano 105 Triple Hollowtech II review

Born of the original BMX crank configuration, Shimano started the revolution to the current two-piece crank systems with its Dura-Ace model and the design was soon fed down to the other groupsets.

Our rating 
4.5 out of 5 star rating 4.5
GBP £99.99 RRP | USD $199.95
Shimano 105 Triple Hollowtech II

Our review

A cinch to fit and great value
Skip to view product specifications

Born of the original BMX crank configuration, Shimano started the revolution to the current two-piece crank systems with its Dura-Ace model and the design was soon fed down to the other groupsets. The left-hand crank is secured using a pair of bolts that must be tightened carefully using a torque wrench, though plastic spacers are present to prevent inadvertedly overtightening.

Advertisement

The 105 arms are less hollow than the costlier Ultegra and 157g heavier Dura-Ace versions and the chainrings are stamped out rather than machined – the smallest one is steel. The teeth are perhaps less radically profiled than those of the Deore chainset but they still ramp very smoothly under pressure. In our experience these pressed chainrings don’t last as long as machined ones, but they can be replaced with other brands or Ultegra or Dura Ace.

Product Specifications

Product

Name 105 Hollowtech II Triple FC-7803
Brand Shimano

Bottom Bracket Included Yes
Chainrings Included Yes
Splined Crank Yes
Weight (g) 942
Material Aluminium
Gearing 30/39/50 30/39/52
Fits Shell Width 68mm 70mm
Chain Speed Compatibility 10
Bottom Bracket Type Hollowtech II
Crank Arm Lengths 165mm 170mm 172.5mm 175mm
Chainring Options Triple
Bolt Circle Diameter 130/74mm