Cover - shares	3 Months Ended	6 Months Ended
	Jul. 03, 2020	Jul. 03, 2020	Aug. 03, 2020	Jan. 03, 2020
Cover [Abstract]
Document Type		10-Q
Document Quarterly Report		true
Document Period End Date		Jul. 03, 2020
Document Transition Report		false
Entity File Number		001-36040
Entity Registrant Name		Fox Factory Holding Corp.
Entity Incorporation, State or Country Code		DE
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
Title of 12(b) Security		Common Stock, par value $0.001 per share
Trading Symbol		FOXF
Security Exchange Name		NASDAQ
Entity Current Reporting Status		Yes
Entity Interactive Data Current		Yes
Entity Filer Category		Large Accelerated Filer
Entity Emerging Growth Company		false
Entity Small Business		false
Entity Shell Company		false
Common stock, shares outstanding (in shares)	41,438	41,438		38,559
Amendment Flag		false
Document Fiscal Year Focus		2020
Document Fiscal Period Focus		Q2
Entity Central Index Key		0001424929
Current Fiscal Year End Date		--01-01
Entity Common Stock, Shares Outstanding			41,437,681