---
kind: "section"
citation: "40 C.F.R. § 1051.640"
title: "40"
number: "1051.640"
heading: "What special provisions apply for custom off-highway motorcycles that are similar to highway motorcycles?"
url: "https://uscodex.org/cfr/40/1051.640"
---

# §1051.640. What special provisions apply for custom off-highway motorcycles that are similar to highway motorcycles?


You may ask to exempt custom-designed off-highway motorcycles that are substantially similar to highway motorcycles under the display exemption provisions of [40 CFR 86.407-78(c)](/cfr/40/86.407-78.md?p=c). Motorcycles exempt under this provision are subject to the restrictions of [40 CFR 86.407-78(c)](/cfr/40/86.407-78.md?p=c) and are considered to be motor vehicles for the purposes of this part 1051.


## Notes

### Amendments

[69 FR 2445, Jan. 15, 2004]

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Source

Source: 67 FR 68347, Nov. 8, 2002, unless otherwise noted.

### Amendments

[69 FR 2445, Jan. 15, 2004]