---
kind: "section"
citation: "40 C.F.R. § 205.164"
title: "40"
number: "205.164"
heading: "Applicability."
url: "https://uscodex.org/cfr/40/205.164"
---

# §205.164. Applicability.

- (a) Except as otherwise provided in these regulations, the provisions of this subpart apply to any motorcycle replacement exhaust system or motorcycle replacement exhaust system component which:
  - (1) Meets the definition of the term “new product” in the Act; and
  - (2) Is designed and marketed for use on any motorcycle subject to the provisions of subpart D of this part.
- (b) The provisions of [§ 205.169](/cfr/40/205.169.md) additionally apply to the motorcycle exhaust systems originally installed on vehicles subject to the requirements of [subpart D](/cfr/40/subpartD.md) of this part.
- (c) The provisions of [§ 205.169(d)(3)](/cfr/40/205.169.md?p=d-3) additionally apply to motorcycle replacement exhaust systems manufactured after January 1, 1983 that are designed and marketed for use on motorcycles manufactured before January 1, 1983.
- (d) Except as provided for in [§ 205.169](/cfr/40/205.169.md), the provisions of this subpart do not apply to exhaust systems which are designed and marketed solely for use on competition motorcycles as defined in [§ 205.151(a)(3)](/cfr/40/205.151.md?p=a-3).
- (e) **The provisions of the subpart do not apply to exhaust header pipes sold as separate products.**

## Notes

### Authority

Authority: Sec. 6 of the Noise Control Act (42 U.S.C. 4905).

### Source

Source: 45 FR 86718, Dec. 31, 1980, unless otherwise noted.

### Authority

Authority: Secs. 6, 10, 11, 13, Pub. L. 92-574, 86 Stat. 1234 (42 U.S.C. 4905, 4909, 4910, 4912).

### Source

Source: 41 FR 15544, Apr. 13, 1976, unless otherwise noted.