Dia-Compe Gran Compe Single crankset review

Dedicated singlespeed chainset

Our rating 
3.5 out of 5 star rating 3.5
GBP £149.99 RRP | USD $222.00
Dia-Compe Gran Compe Single Crankset

Our review

Perfect kit for converting your road bike to singlespeed
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This is the sort of chainset you might consider if you’re building a fixie from scratch and want shorter than usual cranks. These cranks are 165mm long – the sort of length that’ll give you extra clearance on a velodrome’s banking and which could also come in handy when cornering on a fixed-wheel bike.

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The 130 BCD chainset comes with a CNC-milled 46-tooth chainring in 6061 aluminium and forged 2014 aluminium crank arms, though we’d expect better finishing quality on these for the price. If you’re riding them a lot on salted roads you’re going to have to keep them clean if you want to keep the highly polished finish.

As for compatibility, this’ll need to be matched with a square taper (JIS-type) bottom bracket. A 103mm BB is probably the ideal for keeping a narrow Q-factor (the distance between the pedals), and TA’s Axix bottom bracket would be a sound choice (available in lengths from 103-125mm for around £44).

You’ll also need a 1/8in chain. We’d probably go for something like KMC’s Z510 gold chain, which represents good value at just £6.49. Paired with a 17-tooth freewheel it’ll give you a 73in gear – great for general street riding and the occasional gradient.

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Out on the road, the Gran Compe feels reassuringly stiff and efficient, just what you want when riding fixed. Overall this is a pretty decent chainset for creating your own fixie, though the price is on the high side. 

Product Specifications

Product

Name Gran Compe Single Crankset (09)
Brand Dia-Compe

Weight (g) 630
Features 46T
Material Aluminium
Bottom bracket - crank arms connection Square taper
Crank Arm Lengths 165mm