Mountain bike undershorts are designed to add comfort where it matters most. Worn underneath baggy shorts or riding trousers, they provide a padded layer that helps reduce pressure and improve comfort on longer rides and rougher terrain.
Often referred to as liner shorts, MTB undershorts are built to stay out of the way while doing their job. They’re typically lightweight, breathable and designed to work seamlessly with MTB baggy shorts or MTB trousers, making them a key part of many riders’ setups.
Why Choose MTB Undershorts?
If you’re riding for more than a quick spin, undershorts can make a noticeable difference to comfort. The padded chamois helps reduce friction and absorb some of the impact from rough trails, while the close fit keeps everything in place without adding bulk. For many riders, they’re the piece of kit that turns a good ride into a great one.
What to Look for in MTB Undershorts
- Padding: The chamois is key for comfort, especially on longer rides or rough terrain.
- Breathability: Lightweight, breathable fabrics help keep you comfortable as effort levels increase.
- Fit: A close, supportive fit keeps the undershorts in place under your outer layer without bunching.
If you're deciding how to build your lower-body setup, our Mountain Bike Clothing Guide explains how undershorts, shorts and trousers work together for different types of riding.