Alpinestars KX Bottom Tech Layer Review 2026

4.1/5.0
By Max H June 6, 2026
Looks / Appearance 3.8 / 5.0
Functionality 4.2 / 5.0
Ease of use 4.3 / 5.0

Pros

1. Hydrophobic polypropylene construction wicks moisture effectively during high-intensity riding
2. Aggressively profiled cut is specifically designed to reduce muscle fatigue on longer sessions
3. Hypoallergenic and anti-static fibre blend maintains comfort throughout extended use

Cons

1. Not flame-resistant, so unsuitable for FIA-regulated motorsport use
2. Polypropylene can feel less luxurious against the skin than natural fibre alternatives
3. Source description is minimal, limiting the ability to assess the full technical specification

Base layers for track use are a category where the details matter more than the price tag suggests. The KX Bottom Tech Layer is built from polypropylene with a hydrophobic construction that actively wicks moisture away from the skin, keeping the body cool and dry during the physical demands of track riding. The aggressively profiled, well-fitted cut reduces muscle fatigue over longer sessions, and the hypoallergenic, anti-static, and heat-resistant fibre blend keeps comfort levels consistent throughout the life of the garment.

Who is the Alpinestars KX Bottom Tech Layer aimed at?

The KX Bottom is aimed at track and off-road riders who need a performance base layer under their riding trousers. At £49.99 it’s sensibly priced for a moisture-wicking, anti-static tech layer with a specifically engineered riding fit.

Specifications:

– Material: Polypropylene
– Construction: Hydrophobic, moisture-wicking
– Properties: Hypoallergenic, anti-static, heat resistant
– Fit: Aggressively profiled, well-fitted cut
– Price: £49.99

The KX Bottom Tech Layer does its job without drama. The moisture-wicking polypropylene construction and riding-optimised fit give it genuine performance credentials for track and off-road use, and the hypoallergenic fibre blend keeps things comfortable across longer sessions. A practical base layer at a fair price.

Our Verdict

The KX Bottom Tech Layer is a practical, performance-focused base layer at a sensible price. The moisture-wicking construction and riding-optimised fit give it genuine credentials for track and off-road use, and at £49.99 it’s a fair investment in staying comfortable under your riding kit.

Pros

1. Hydrophobic polypropylene construction wicks moisture effectively during high-intensity riding
2. Aggressively profiled cut is specifically designed to reduce muscle fatigue on longer sessions
3. Hypoallergenic and anti-static fibre blend maintains comfort throughout extended use

Cons

1. Not flame-resistant, so unsuitable for FIA-regulated motorsport use
2. Polypropylene can feel less luxurious against the skin than natural fibre alternatives
3. Source description is minimal, limiting the ability to assess the full technical specification