KCNC K-type RD2 chainset review

Lightweight chainset

Our rating 
3.0 out of 5 star rating 3.0
GBP £274.99 RRP
KCNC K-type RD2 chainset

Our review

Eye-catching crankset that will put your drivetrain on a diet
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KCNC’S K-type RD2 cranks are real eye-catchers, with extensively machined arms, further lightened by twin cavities running along their length.


The search for light weight also extends to the scandium alloy axle whose neatly splined ends are held in place by extra-long crank bolts for extra durability.

Stainless steel bearings spin freely in aluminium BB-cups and feel wonderfully smooth at first, though ours developed play after 100km that the adjustment system couldn’t remove. All this shaving and saving of weight has left the RD2 a little flexible compared to Shimano’s top-end crank sets, but for fast-paced TT-riding, flexibility was never a cause for concern.

Shifting from the KCNC chainrings was good, but there was a rhythm-breaking delay as the chain scrabbled for purchase during rushed shifts.


At 660g (with 68mm threaded BB) these are a good way to slice weight off your drivetrain, if that’s a priority.

Product Specifications


Name K-type RD2 chainset
Brand KCNC

Weight (g) 660
Material 7075 Alloy
Gearing 39/53
Fits Shell Width 68mm
Chainring Set-up Double
Q-Factor 151