The Japanese company reported a decline in first-quarter net income on weaker sales of biking equipment, said a report from Bloomberg. Shimano's shares trade on the Osaka stock exhange.
In its annual report for 2004, released last week, Shimano president Yozo Shimano said 2004 results showed the company had performed well, recording its highest ever sales.
Net income grew by 59 percent in 2004.
But demand for this year looks to be slowing, forcing Shimano to cut its profit forecasts, from $99m to $86m. The company cited sluggish demand in Asia.
Bloomberg reports that Shimano also lowered its full-year profit forecast by 6.4 percent.