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

Pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, each of the undersigned officers of Wilson
Greatbatch Technologies, Inc. (the "Company"), does hereby certify, to such
officer's knowledge, that:

The Annual Report on Form 10-K/A for the year ended December 31, 2004 (the "Form
10-K/A") of the Company fully complies with the requirements of section 13(a) or
15(d) of the Securities Exchange Act of 1934 and the information contained in
the Form 10-K/A fairly presents, in all material respects, the financial
condition and results of operations of the Company.



 Dated: December 16, 2005               /s/ Edward F. Voboril
                                        ----------------------------------------
                                        Edward F. Voboril
                                        President and Chief Executive Officer
                                        and Chairman of the Board



Dated: December 16, 2005                /s/ Thomas J. Mazza
                                        ----------------------------------------
                                        Thomas J. Mazza
                                        Senior Vice President and
                                        Chief Financial Officer


This certification is being furnished solely to accompany this Form 10-K/A
pursuant to 18 U.S.C. Section 1350, and is not being filed for purposes of
Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise, and
is not to be incorporated by reference into any filing of the Company unless
such incorporation is expressly referenced within.


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