# UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

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# Form 8-K

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# CURRENT REPORT

# PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934

DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED):  November 29, 2005

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MTS SYSTEMS CORPORATION
(EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

|MINNESOTA                                      |  |  | 0-2382                   |  |  | 41-0908057                          |  | 
|---------------------------------------------- |  |  | ------------------------ |  |  | ----------------------------------- |  | 
|(STATE OR OTHER JURISDICTION OF INCORPORATION) |  |  | (COMMISSION FILE NUMBER) |  |  | (I.R.S. EMPLOYERIDENTIFICATION NO.) |  | 

14000 TECHNOLOGY DRIVE, EDEN PRAIRIE, MN 55344
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE)

(952) 937-4000
(REGISTRANTS TELEPHONE NUMBER, INCLUDING AREA CODE)

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Check the appropriate box below if the Form 8-K is intended to simultaneously
satisfy the filing obligations of the registrant under any of the following provisions:

|o |  | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
|- |  | -------------------------------------------------------------------------------------

|o |  | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
|- |  | --------------------------------------------------------------------------------------

|o |  | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
|- |  | ------------------------------------------------------------------------------------------------------

|o |  | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4c))
|- |  | -----------------------------------------------------------------------------------------------------





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# Item 5.03.    Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

On November 29, 2005, the Board of Directors of MTS Systems Corporation (the
Company) adopted an amendment to the Companys Bylaws to add a new Section 9 to Article II to allow a director to
give advance written consent or opposition to a proposal to be acted on at a meeting of the Board of Directors. The Bylaw
amendment became effective immediately upon its adoption by the Board of Directors. The text of the Companys Bylaws in their
entirety reflecting the amendment adding Section 9 to Article II is set forth in Exhibit 3.1 to this Form 8-K.

# Item 9.01.   Financial Statements and Exhibits

| | (c)   Exhibits
| | --------------

| | Exhibit 3.1  Bylaws of MTS Systems Corporation, as amended
through November 29, 2005.
| | --------------------------------------------------------------------------------------

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# SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

|                         | MTS SYSTEMS CORPORATION(Registrant)
|------------------------ | -----------------------------------
|                        
|Date:   December 2, 2005 | By:                                
|                         |                                    
|                        

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# MTS SYSTEMS CORPORATION
FORM 8-K REPORT

# INDEX TO EXHIBITS

|Exhibit No. |  | Description                                                             
|----------- |  | ------------------------------------------------------------------------
|           
|3.1         |  | Bylaws of MTS Systems Corporation, as amended through November 29, 2005.

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