No—if wearing a padded liner short under your MTB pants, the liner goes directly against your skin with no underwear, just like with cycling shorts. The chamois is designed to be worn against skin to prevent chafing. If you're riding without a liner (e.g., bike park laps), you can wear moisture-wicking underwear or go commando depending on preference.
Cycling Pants · Mountain Bike Pants / MTB Pants
Do I wear underwear under MTB pants?
Related gear types
If this answer nudged you toward a different style, these guides compare specs and trade-offs.
Waterproof Cycling Pants
$60 – $350
Fully waterproof cycling pants designed to keep riders dry in heavy rain and wet conditions.
waterproof membranetaped or sealed seamswater-resistant zippers
Commuter Cycling Pants
$60 – $220
Casual-styled pants with hidden cycling features, designed to look like everyday clothing both on and off the bike.
casual appearancestretch fabrichidden reflective elements
Windproof Cycling Pants
$60 – $250
Lightweight cycling pants with wind-blocking front panels to cut wind chill on cool, breezy rides.
windproof front panelsbreathable rear panelslightweight construction
More questions
- Can I wear MTB pants for road cycling?
- Are MTB pants too hot for summer riding?
- Do MTB pants come with a chamois/pad?
- How do I prevent my MTB pants from catching in the chain?