Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report of Blue Bird Corporation (the “Company”) on Form 10-Q for the quarterly period ended March 31, 2018, as filed with the United States Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Philip Horlock, Chief Executive Officer of the Company, and Phillip Tighe, Chief Financial Officer of the Company, do hereby certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)    The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2)    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	May 10, 2018	/s/ Philip Horlock
		Philip Horlock
		Chief Executive Officer
Dated:	May 10, 2018	/s/ Phillip Tighe
		Phillip Tighe
		Chief Financial Officer