EXECUTION JOINDER AND RIGHTS AGREEMENT THIS JOINDER AND RIGHTS AGREEMENT (this "AGREEMENT") is made as of October 14, 1999, by and between J.L. French Automotive Castings, Inc., a Delaware corporation (the "COMPANY") and each of the Persons listed on the signature page attached hereto (collectively referred to herein as the "ONEX INVESTORS") and each individually as an "ONEX INVESTOR"). As of April 21, 1999, the Company and certain of the Company's stockholders entered into an investor stockholders agreement (as amended from time to time in accordance with its terms, the "STOCKHOLDERS AGREEMENT") and a registration rights agreement (as amended from time to time in accordance with its terms, the "REGISTRATION AGREEMENT"). On the date hereof, the Company, the Onex Investors and certain other stockholders of the Company entered into a Stock Purchase Agreement (the "STOCKPURCHASE AGREEMENT"), pursuant to which the Onex Investors purchased in the aggregate 2,058.251020 shares of the Company's Class B Common Stock par value $.01 per share (the "CLASS B COMMON") and such other stockholders have approved an amendment to each of the Stockholders Agreement and the Registration Agreement permitting the joinder of the Onex Investors to such agreements. In connection with the issuance of the Class B Common, the parties to this Agreement desire that each Onex Investor become a party to the Stockholders Agreement and the Registration Agreement. NOW, THEREFORE, the parties hereto agree as follows: 1. ADDITION OF THE ONEX INVESTORS TO THE STOCKHOLDERS AGREEMENT. The parties hereto agree that, by and upon execution of this Agreement, each Onex Investor shall be a party to the Stockholders Agreement and shall be considered a "STOCKHOLDER" and a holder of "COMMON STOCK" thereunder and, except as otherwise provided herein, each shall be entitled to the rights and benefits and subject to the duties and obligations of a Stockholder and a holder of Common Stock thereunder, as fully as if such Onex Investor were an original signatory thereto in such capacities. 2. ADDITION OF THE ONEX INVESTORS TO THE REGISTRATION AGREEMENT. The parties hereto agree that, by and upon execution of this Agreement, each Onex Investor shall be a party to the Registration Agreement and shall be considered an "INVESTOR" and a holder of "REGISTRABLE SECURITIES" thereunder and shall be entitled to the rights and benefits and subject to the duties and obligations of an Investor and a holder of Registrable Securities thereunder, as fully as if such Onex Investor were an original signatory thereto in such capacities. 3. RESTRICTIVE LEGENDS. In lieu of the legend required by Article 7 of the Stockholders Agreement, each certificate evidencing shares of Class B Common acquired upon conversion of the Convertible Note (or any Company securities issued with respect to such shares) shall, until such time as such shares are no longer subject to the provisions of the Stockholders Agreement in accordance with the provisions thereof, be stamped or otherwise imprinted with a legend in substantially the following form: "THE SECURITIES REPRESENTED BY THIS CERTIFICATE WERE ORIGINALLY ISSUED ON OCTOBER 14, 1999, AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR THE SECURITIES LAWS OF ANY STATE, AND MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION UNDER THE ACT OR APPLICABLE STATE LAW OR AN EXEMPTION FROM REGISTRATION THEREUNDER. THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE ALSO SUBJECT TO ADDITIONAL RESTRICTIONS ON TRANSFER AND CERTAIN OTHER AGREEMENTS SET FORTH IN A STOCKHOLDERS AGREEMENT DATED AS OF APRIL 21, 1999, BY AND AMONG THE ISSUER OF SUCH SECURITIES (THE "COMPANY") AND CERTAIN OF THE COMPANY'S STOCKHOLDERS, AS AMENDED AND MODIFIED FROM TIME TO TIME. THE SECURITIES REPRESENTED BY THIS CERTIFICATE BECAME SUBJECT TO SUCH STOCKHOLDERS AGREEMENT PURSUANT TO A JOINDER AND RIGHTS AGREEMENT DATED AS OF OCTOBER 14, 1999, BY AND AMONG THE COMPANY AND THE INITIAL HOLDER OF SUCH SECURITIES. A COPY OF EACH SUCH AGREEMENT SHALL BE FURNISHED WITHOUT CHARGE BY THE COMPANY TO THE HOLDER HEREOF UPON WRITTEN REQUEST." 4. CONTINUING EFFECT. Except as modified by this Agreement, the Stockholders Agreement shall continue and remain in full force and effect in accordance with their terms. 5. SEVERABILITY. Whenever possible, each provision of this Agreement shall be interpreted in such manner as to be effective and valid under applicable law, but if any provision of this Agreement is held to be invalid, illegal or unenforceable in any respect under any applicable law or rule in any jurisdiction, such invalidity, illegality or unenforceability shall not affect the validity, legality or enforceability of any other provision of this Agreement in such jurisdiction or affect the validity, legality or enforceability of any provision in any other jurisdiction, but this Agreement shall be reformed, construed and enforced in such jurisdiction as if such invalid, illegal or unenforceable provision had never been contained herein. 6. CONSENT TO AMENDMENTS. The provisions of this Agreement may be amended, modified, or waived only with the prior written consent of the Company and holders of a majority of the Class A Common held by the Onex Investors; PROVIDED that no such amendment, modification, waiver shall in any way be construed to constitute an amendment, modification, or 2 waiver of the Stockholders Agreement (including without limitation with respect to the Onex Investors' being a party to such agreements and the rights and obligations of the Onex Investors as a party to such agreement), which agreement may only be amended, modified, or waived in accordance with the provisions thereof. 7. COUNTERPARTS. This Agreement may be executed in multiple counterparts, each of which shall be an original and all of which taken together shall constitute one and the same agreement. 8. GOVERNING LAW. THE CORPORATE LAW OF THE STATE OF DELAWARE SHALL GOVERN ALL ISSUES AND QUESTIONS CONCERNING THE RELATIVE RIGHTS OF THE COMPANY AND ITS STOCKHOLDERS. ALL OTHER ISSUES AND QUESTIONS CONCERNING THE CONSTRUCTION, VALIDITY, INTERPRETATION AND ENFORCEABILITY OF THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK, WITHOUT GIVING EFFECT TO ANY CHOICE OF LAW OR CONFLICT OF LAW RULES OR PROVISIONS (WHETHER OF THE STATE OF NEW YORK OR ANY OTHER JURISDICTION) THAT WOULD CAUSE THE APPLICATION OF THE LAWS OF ANY JURISDICTION OTHER THAN THE STATE OF NEW YORK. 9. SUCCESSORS AND ASSIGNS. Except as otherwise provided herein, this Agreement shall bind and inure to the benefit of and be enforceable by the Company and Tower and their respective successors and assigns, whether so expressed or not. 10. DESCRIPTIVE HEADINGS; INTERPRETATION; NO STRICT CONSTRUCTION. The descriptive headings of this Agreement are inserted for convenience only and do not constitute a substantive part of this Agreement. Whenever required by the context, any pronoun used in this Agreement shall include the corresponding masculine, feminine or neuter forms, and the singular forms of nouns, pronouns, and verbs shall include the plural and vice versa. Except as otherwise expressly provided herein, reference to any agreement, document, or instrument means such agreement, document, or instrument as amended or otherwise modified from time to time in accordance with the terms thereof, and if applicable hereof. The use of the words "include" or "including" in this Agreement shall be by way of example rather than by limitation. The use of the words "or," "either" or "any" shall not be exclusive. The parties hereto have participated jointly in the negotiation and drafting of this Agreement. In the event an ambiguity or question of intent or interpretation arises, this Agreement shall be construed as if drafted jointly by the parties hereto, and no presumption or burden of proof shall arise favoring or disfavoring any party by virtue of the authorship of any of the provisions of this Agreement. 11. DELIVERY BY FACSIMILE. This Agreement, the agreements referred to herein, and each other agreement or instrument entered into in connection herewith or therewith or contemplated hereby or thereby, and any amendments hereto or thereto, to the extent signed and delivered by means of a facsimile machine, shall be treated in all manner and respects as an original agreement or instrument and shall be considered to have the same binding legal effect as if it were the original signed version thereof delivered in person. At the request of any party hereto or to any such agreement or instrument, each other party hereto or thereto shall reexecute original forms 3 thereof and deliver them to all other parties. No party hereto or to any such agreement or instrument shall raise the use of a facsimile machine to deliver a signature or the fact that any signature or agreement or instrument was transmitted or communicated through the use of a facsimile machine as a defense to the formation or enforceability of a contract and each such party forever waives any such defense. * * * * * 4 IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of the date first written above. J.L. FRENCH AUTOMOTIVE CASTINGS, INC. By: --------------------------------- Its: --------------------------------- Onex Advisor LLC By: --------------------------------- Its: --------------------------------- 1170809 Ontario Inc. By: --------------------------------- Its: --------------------------------- 1170810 Ontario Inc. By: --------------------------------- Its: --------------------------------- 1170812 Ontario Inc. By: --------------------------------- Its: --------------------------------- 1170698 Ontario Inc. By: --------------------------------- Its: --------------------------------- Kaban Investments By: --------------------------------- Its: --------------------------------- ------------------------------------------ Mark Briggs ------------------------------------------ Naveen Jeereddi 1299039 Ontario Inc. By: --------------------------------- Its: --------------------------------- ------------------------------------------ Robert Lantos ------------------------------------------ Brian King ------------------------------------------ Robert Prichard ------------------------------------------ Serge Gouin Mercury Trade International Ltd. By: --------------------------------- Its: --------------------------------- United Trustco Limited By: --------------------------------- Its: --------------------------------- Medavoy 1987 Trust dated January 25, 1999 By: --------------------------------- Its: --------------------------------- 1376654 Ontario Inc. By: --------------------------------- Its: --------------------------------- 1376653 Ontario Inc. By: --------------------------------- Its: --------------------------------- HRON Canadian Investments Ltd. By: --------------------------------- Its: --------------------------------- Brent Belzberg Family Trust By: --------------------------------- Its: --------------------------------- ------------------------------------------ Brian Mulroney ------------------------------------------ Don Gales ------------------------------------------ Arnold Messer 2668921 Manitoba Ltd. By: --------------------------------- Its: --------------------------------- 1170821 Ontario Inc. By: --------------------------------- Its: --------------------------------- SMM (Kyzalea) By: --------------------------------- Its: --------------------------------- 1170697 Ontario Inc. By: --------------------------------- Its: --------------------------------- 1170819 Ontario Inc. By: --------------------------------- Its: --------------------------------- 1301449 Ontario Inc. By: --------------------------------- Its: --------------------------------- 1352536 Ontario Inc. By: --------------------------------- Its: --------------------------------- 1352537 Ontario Inc. By: --------------------------------- Its: ---------------------------------