Thomson Elite X4 stem review

Sets the benchmark in stems

Our rating 
4.0 out of 5 star rating 4.0
GBP £80.00 RRP | USD $89.95
Thomson Elite X4

Our review

The benchmark in stems for strength to weight, though you can shave 30g with other models for cross-country setups
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As a contract machining company who also make bike components, it’s odd that USA-based Thomson have become the benchmark in stems. They’ve built a devoted following, thanks to the CNC wizardry in their in-house stem and seatpost production.


The X4 exhibits a wealth of CNC scalloping to produce a 7000 series aluminium classic whose smooth lines help spread stress and loading. Its solid build quality and no-compromise looks camouflage a respectable weight, making it suitable for anything from cross-country to all-mountain riding and more.


A 44mm-wide face plate is internally reamed to provide two 10mm-wide contact rings that clamp the bar – minimal by some standards, but we’ve had no issues with bar slippage. The bar clamp is carbon-friendly and on the trail the X4 has a confident feel and knee-friendly steerer clamp shape. Laser-etched graphics complement the quality looks.

Product Specifications


Name Elite X4 (11)
Brand Thomson

Description Stack height: 40mm. Options: 45mm, 50-130mm in 10mm increments
Weight (g) 159
Available Colours Black Silver
Length (mm) 80
Stem Rise 0, 10