Oval Concepts R900 stem review

Composite road stem

Our rating 
4.0 out of 5 star rating 4.0
GBP £89.95 RRP | USD $169.00
Oval Concepts R900

Our review

Looks like a carbon stem, and high quality for sensible money
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Cold forged and then machined before being wrapped in layers of carbon fibre composite the R900 is 5g lighter than the all-aluminium R700 model. 


It doesn’t feel any stiffer than the R700 in use, although the deflection test did show it to be slightly stiffer in torsion.

The rear facing cap screws can be a fiddle to get to grips with as they need an Allen key extension when using a torque wrench, but this also makes you pay more attention to even bolt tightening when you’re fitting your bars.


A nice touch is the slot at the rear of the steerer clamp that is cut at an oblique angle to reduce the likelihood of damage to carbon steerer tubes. 

Product Specifications


Name R900 Stem
Brand Oval Concepts

Manufacturer's Description Structural carbon wrap over net-shape 3-axis cold forged - 2014 T-6 skeleton provides optimum in stiffness and lightweight
Weight (g) 138
Steerer Size 1 In 1 1/8
Clamp/Bar Size 26.0 31.8
Stem Length/Reach Options 100mm 110mm 120mm 130mm 80mm 90mm