---
title: "NoCollision"
url: /docs/en-us/physics/constraints/no-collision
last_updated: 2026-06-25T22:10:47Z
description: "NoCollisionConstraint prevents collisions between two specific parts, but those parts may still register collisions with the rest of the world."
---

# NoCollision

The `Class.NoCollisionConstraint` prevents collisions between two specific parts, but those parts may still register collisions with the rest of the world. Compared to [collision groups](/docs/en-us/workspace/collisions.md#collision-groups), it provides a direct way to disable specific collisions, such as the wheel of a car scraping against the car's body.