Power of Attorney for Christine M. Schyvinck

This filing documents a Power of Attorney granted by Christine M. Schyvinck to Sean P. Leuba and Garrett F. Bishop. This authorization allows the attorneys-in-fact to execute and file all necessary SEC filings, including Forms 3, 4, and 5, related to Ms. Schyvinck's holdings and transactions in securities of Mayville Engineering Company, Inc. The Power of Attorney remains in effect until Ms. Schyvinck is no longer required to file such documents or until it is revoked in writing. Ms. Schyvinck acknowledges that her attorneys-in-fact are not assuming her responsibilities under the Exchange Act and agrees to indemnify them and the Company against any liabilities arising from inaccurate information provided.