| Cover Document | Dec. 17, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Document Period End Date | Dec. 17, 2020 |
| Entity Registrant Name | Fox Factory Holding Corp. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-36040 |
| Entity Tax Identification Number | 26-1647258 |
| Entity Address, Address Line One | 6634 Hwy 53 |
| Entity Address, City or Town | Braselton |
| Entity Address, State or Province | GA |
| Entity Address, Postal Zip Code | 30517 |
| City Area Code | 831 |
| Local Phone Number | 274-6500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | FOXF |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001424929 |
| Amendment Flag | true |
| Amendment Description | Sidney Johnson Appointment |
