EXHIBIT 99.1

Sun Hydraulics Reports 13th Consecutive Quarter of Double Digit Sales Growth, 11th Consecutive Quarter of Double Digit Growth in Earnings

SARASOTA, FL, Aug 08, 2006 (MARKET WIRE via COMTEX News Network) — Sun Hydraulics Corporation (NASDAQ: SNHY) reported financial results for the second quarter of 2006 as follows:

(Dollars in millions except net income per share)

“We continued to see strong demand across all segments in the second quarter,” said Allen Carlson, Sun Hydraulics’ President and CEO. “Sun has reported double digit growth in sales and earnings going back to 2003 and we expect more of the same for the third quarter as orders heading into the quarter remain strong and steady.”

“Sales and orders were strong in the second quarter, although earnings were constrained due to additional material and fixed cost increases,” Carlson continued. “Productivity gains have offset much of the previous years’ cost increases. However, this year the additional costs have outpaced productivity gains. Consequently, in July, we implemented a mid-year price increase to stem further margin erosion and improve future earnings.”

“We are continually looking at better, more efficient ways to make our products,” Carlson explained. “To achieve this, we have accelerated capital investments that will further improve capacity and productivity.”

Concluding, Carlson said, “We expect strong sales, further productivity improvements and nearly a full quarter of the price increase to result in improved earnings next quarter.”

Stock Buyback

In June, 2006, the Board of Directors announced a stock buyback of up to $2.5 million. The stock buyback was completed in July 2006, with the entire $2.5 million being repurchased.

Recognition

During the quarter, Sun was included in Business Week’s “Top 100 Hot Growth Companies of 2006” (ranked #61) and also included in Fortune magazine’s “2006 Small Business 100” list (ranked #14). In addition, as of July 1, 2006, Sun qualified for and was included in the new NASDAQ Global Select Market, by meeting the highest initial listing standard established by NASDAQ when it became a stock exchange.

Outlook

2006 third quarter sales are estimated to be approximately $36 million, a 25% increase over the same period last year. Third quarter earnings per share are estimated to be between $0.38 and $0.40 per share, compared to $0.27 per share last year, approximately a 44% increase in earnings.

Webcast

Sun Hydraulics Corporation will broadcast its second quarter financial results conference call live over the Internet at 2:30 P.M. E.T. tomorrow, August 9, 2006. To listen to the webcast, go to http://investor.sunhydraulics.com/medialist.cfm. A copy of this earnings release is posted on the Investor Relations page of our website under “Press Releases”.

Webcast Q&A

Questions may be submitted to the Company via email after reviewing this earnings release, by going to the Sun Hydraulics website, www.sunhydraulics.com, and clicking on Investor Relations on the top menu. Scroll down to the bottom of the page and click on contact email: investor@sunhydraulics.com, which will open an email window to type in your message. Sun management will then answer these and other questions during the Company’s webcast. If an individual wishes to ask questions directly during the webcast, the conference call may be accessed by dialing 1-877-407-8033.

Sun Hydraulics Corporation is a leading designer and manufacturer of high performance screw-in hydraulic cartridge valves and manifolds for worldwide industrial and mobile markets. For more information about Sun, please visit our website at www.sunhydraulics.com.

FORWARD-LOOKING INFORMATION

Certain oral statements made by management from time to time and certain statements contained herein that are not historical facts are “forward-looking statements” within the meaning of Section 21E of the Securities Exchange Act of 1934 and, because such statements involve risks and uncertainties, actual results may differ materially from those expressed or implied by such forward-looking statements. Forward-looking statements, including those in Management’s Discussion and Analysis of Financial Condition and Results of Operations are statements regarding the intent, belief or current expectations, estimates or projections of the Company, its Directors or its Officers about the Company and the industry in which it operates, and assumptions made by management, and include among other items, (i) the Company’s strategies regarding growth, including its intention to develop new products; (ii) the Company’s financing plans; (iii) trends affecting the Company’s financial condition or results of operations; (iv) the Company’s ability to continue to control costs and to meet its liquidity and other financing needs; (v) the declaration and payment of dividends; and (vi) the Company’s ability to respond to changes in customer demand domestically and internationally, including as a result of standardization. Although the Company believes that its expectations are based on reasonable assumptions, it can give no assurance that the anticipated results will occur.

Important factors that could cause the actual results to differ materially from those in the forward-looking statements include, among other items, (i) the economic cyclicality of the capital goods industry in general and the hydraulic valve and manifold industry in particular, which directly affect customer orders, lead times and sales volume; (ii) conditions in the capital

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markets, including the interest rate environment and the availability of capital; (iii) changes in the competitive marketplace that could affect the Company’s revenue and/or cost bases, such as increased competition, lack of qualified engineering, marketing, management or other personnel, and increased labor and raw materials costs; (iv) changes in technology or customer requirements, such as standardization of the cavity into which screw-in cartridge valves must fit, which could render the Company’s products or technologies noncompetitive or obsolete; (v) new product introductions, product sales mix and the geographic mix of sales nationally and internationally; and (vi) changes relating to the Company’s international sales, including changes in regulatory requirements or tariffs, trade or currency restrictions, fluctuations in exchange rates, and tax and collection issues. Further information relating to factors that could cause actual results to differ from those anticipated is included but not limited to information under the headings Item 1. “Business,” Item 1A. “Risk Factors” and Item 7. “Management’s Discussion and Analysis of Financial Conditions and Results of Operations” in the Company’s Form 10-K for the year ended December 31, 2005 and “Management’s Discussion and Analysis of Financial Conditions and Results of Operations” in the Company’s Form 10-Q for the quarter ended April 1, 2006. The Company disclaims any intention or obligation to update or revise forward-looking statements, whether as a result of new information, future events or otherwise.

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SUN HYDRAULICS CORPORATION

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands except per share data)

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SUN HYDRAULICS CORPORATION

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands except per share data)

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SUN HYDRAULICS CORPORATION

CONSOLIDATED BALANCE SHEETS

(in thousands)

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SUN HYDRAULICS CORPORATION

CONSOLIDATED STATEMENT OF CASH FLOWS

(in thousands)

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