AFTERMARKET TECHNOLOGY CORP

election_required = True...kholders should be aware that this election could mean that none of their shares will be purchased if they check a box other than the box representing the price at or below the purchase price. In addition, "odd lot holders" who tender all of their shares must complete the section entitled "Odd Lots" in the Letter of Transmittal and, if applicable, in the Notice of Guaranteed Delivery, to qualify for the preferential treatment available to "odd lot holders" as set forth in Section 1. Stockholders holding their shares through a broker, dealer, commercial bank, trust company or other nominee must contact the nominee in order to tender their shares. Stockholders wh...

election_required = True...lders should be aware that this election could mean that none of their shares will be purchased if they check a box other than the box representing the price at or below the purchase price. 16 In addition, "odd lot holders" who tender all of their shares must complete the section entitled "Odd Lots" in the Letter of Transmittal and, if applicable, in the Notice of Guaranteed Delivery, to qualify for the preferential treatment available to "odd lot holders" as set forth in Section 1. Stockholders holding their shares through a broker, dealer, commercial bank, trust company or other nominee must contact the nominee in order to tender their shares. Stockholders wh...

expiry = 2004-01-20...ology Corp. of Up to 2,638,500 Shares of Its Common Stock At a Purchase Price Not Greater than $15.75 per Share Nor Less than $13.00 per Share THE TENDER OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON TUESDAY, JANUARY 20, 2004, UNLESS THE TENDER OFFER IS EXTENDED. We invite our stockholders to tender up to 2,638,500 shares of our common stock, $0.01 par value per share, for purchase by us at a price not greater than $15.75 nor less than $13.00 per share, net to...

expiry = 2004-01-20...ology Corp. of Up to 2,638,500 Shares of Its Common Stock At a Purchase Price Not Greater than $15.75 per Share Nor Less than $13.00 per Share THE TENDER OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON TUESDAY, JANUARY 20, 2004, UNLESS THE TENDER OFFER IS EXTENDED. We invite our stockholders to tender up to 2,638,500 shares of our common stock, $0.01 par value per share, for purchase by us at a price not greater than $15.75 nor less than $13.00 per share, net to...

listed = True...e more than 2,638,500 shares in the tender offer, subject to applicable law. See Section 1. THE TENDER OFFER IS NOT CONDITIONED ON ANY MINIMUM NUMBER OF SHARES BEING TENDERED. THE TENDER OFFER IS, HOWEVER SUBJECT TO OTHER CONDITIONS. SEE SECTION 7. Our shares are traded on The Nasdaq National Market under the symbol "ATAC." On December 15, 2003, the last full trading day prior to the announcement and commencement of the tender offer, the last reported sale price of our shares was $13.75 per share. Stockholders are urged to obtain current market quotations for the shares before deciding whether and at what purchase price or purchase prices to tend...

listed = True...e more than 2,638,500 shares in the tender offer, subject to applicable law. See Section 1. THE TENDER OFFER IS NOT CONDITIONED ON ANY MINIMUM NUMBER OF SHARES BEING TENDERED. THE TENDER OFFER IS, HOWEVER SUBJECT TO OTHER CONDITIONS. SEE SECTION 7. Our shares are traded on The Nasdaq National Market under the symbol "ATAC." On December 15, 2003, the last full trading day prior to the announcement and commencement of the tender offer, the last reported sale price of our shares was $13.75 per share. Stockholders are urged to obtain current market quotations for the shares before deciding whether and at what purchase price or purchase prices to tend...

mechanism = DUTCH...1. The tender offer is not conditioned on any minimum number of shares being tendered. See Section 7. What will the purchase price for the shares be and what will be the form of payment? We are conducting the tender offer through a procedure commonly called a modified "Dutch Auction." This procedure allows you to select the price within a price range specified by us at which you are willing to sell your shares. The price range for the tender offer is $13.00 to $15.75 per share. We will select the lowest purchase price that will allow us to buy 2,638,500 shares or, if fewer shares are properly tendered, all shares th...

mechanism = DUTCH...1. The tender offer is not conditioned on any minimum number of shares being tendered. See Section 7. What will the purchase price for the shares be and what will be the form of payment? We are conducting the tender offer through a procedure commonly called a modified "Dutch Auction." This procedure allows you to select the price within a price range specified by us at which you are willing to sell your shares. The price range for the tender offer is $13.00 to $15.75 per share. We will select the lowest purchase price that will allow us to buy 2,638,500 shares or, if fewer shares are properly tendered, all shares th...

must_tender_all = True...he Depositary or if your shares have been tendered under the procedure for book-entry transfer set forth in Section 3. In what order will you purchase the tendered shares? We will purchase shares: •first, from all holders of "odd lots" of less than 100 shares who properly tender all of their shares at or below the purchase price selected by us and do not properly withdraw them before the expiration date; •second, after purchasing the shares from the "odd lot holders," from all other stockholders who properly tender shares at or below the purchase price selected by us, on a pro rata basis, subject to the conditional tender provision...

must_tender_all = True...he Depositary or if your shares have been tendered under the procedure for book-entry transfer set forth in Section 3. In what order will you purchase the tendered shares? We will purchase shares: •first, from all holders of "odd lots" of less than 100 shares who properly tender all of their shares at or below the purchase price selected by us and do not properly withdraw them before the expiration date; •second, after purchasing the shares from the "odd lot holders," from all other stockholders who properly tender shares at or below the purchase price selected by us, on a pro rata basis, subject to the conditional tender provision...

price = USD 13.0-15.75...re commonly called a modified "Dutch Auction." This procedure allows you to select the price within a price range specified by us at which you are willing to sell your shares. The price range for the tender offer is $13.00 to $15.75 per share. We will select the lowest purchase price that will allow us to buy 2,638,500 shares or, if fewer shares are properly tendered, all shares that are properly tendered and not properly withdrawn. We will purchas...

price = USD 13.0-15.75...re commonly called a modified "Dutch Auction." This procedure allows you to select the price within a price range specified by us at which you are willing to sell your shares. The price range for the tender offer is $13.00 to $15.75 per share. We will select the lowest purchase price that will allow us to buy 2,638,500 shares or, if fewer shares are properly tendered, all shares that are properly tendered and not properly withdrawn. We will purchas...

threshold = 100...at or below the purchase price. 12 Odd Lots. For purposes of the tender offer, the term "odd lots" means all shares properly tendered at prices at or below the purchase price selected by us held by a stockholder, which we refer to as an "odd lot holder," who owns beneficially or of record an aggregate of fewer than 100 shares and so certifies in the appropriate place on the related Letter of Transmittal. To qualify for this preference, an "odd lot holder" must tender all shares owned beneficially or of record by the "odd lot holder" in accordance with the procedures described in Section 3. As set forth above, "odd lots" will be accepted for payment before pro...

threshold = 100...at or below the purchase price. 12 Odd Lots. For purposes of the tender offer, the term "odd lots" means all shares properly tendered at prices at or below the purchase price selected by us held by a stockholder, which we refer to as an "odd lot holder," who owns beneficially or of record an aggregate of fewer than 100 shares and so certifies in the appropriate place on the related Letter of Transmittal. To qualify for this preference, an "odd lot holder" must tender all shares owned beneficially or of record by the "odd lot holder" in accordance with the procedures described in Section 3. As set forth above, "odd lots" will be accepted for payment before pro...

txn_type = TENDER_OFFEREX-99.(A)(1)(I) 3 a2124908zex-99_a1i.htm EXHIBIT 99(A)(1)(I) QuickLinks -- Click here to rapidly navigate through this document Exhibit (a)(1)(i) Offer to Purchase for Cash by Aftermarket Technology Corp. of Up to 2,638,500 Shares of Its Common Stock At a Purchase Price Not Greater than $15.75 per Share Nor Less than $13.00 per Share THE TENDER OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON TUESDAY, JANUARY 20, 2004, UNLESS THE TENDER OFFER IS EXTENDE...

txn_type = TENDER_OFFEREX-99.(A)(1)(I) 3 a2124908zex-99_a1i.htm EXHIBIT 99(A)(1)(I) QuickLinks -- Click here to rapidly navigate through this document Exhibit (a)(1)(i) Offer to Purchase for Cash by Aftermarket Technology Corp. of Up to 2,638,500 Shares of Its Common Stock At a Purchase Price Not Greater than $15.75 per Share Nor Less than $13.00 per Share THE TENDER OFFER, PRORATION PERIOD AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON TUESDAY, JANUARY 20, 2004, UNLESS THE TENDER OFFER IS EXTENDE...