The team traces its origins to Hideo Yoshimura, born in Fukuoka City, Japan in 1922. After serving as an aircraft mechanic during the Second World War, Yoshimura began tuning motorcycles for American servicemen stationed in Japan and opened his first shop in 1954. In 1971 he relocated his business to Los Angeles at the beginning of the four-cylinder superbike era, building a reputation as one of the finest motorcycle tuners in the world.
Yoshimura Performance, often referred to as Yoshimura R&D, specialised in high-performance aftermarket parts — particularly exhaust systems — and the company grew into one of the world's largest sportbike exhaust manufacturers. Racing was always central to the business model, with race success directly driving commercial sales.
When the AMA introduced a racing class for production-based motorcycles in 1976, Yoshimura established himself immediately, entering fast Kawasaki Z1 machines. In 1978 he switched to Suzuki, and the results were immediate: Steve McLaughlin won the Daytona Superbike race, while Wes Cooley and Mike Baldwin won the prestigious Suzuka 8 Hours endurance race in Japan that same year.
The partnership with Suzuki solidified into a full factory relationship. With Wes Cooley as lead rider, Yoshimura claimed the AMA Superbike national championship in both 1979 and 1980, establishing the team as the dominant force in American superbike competition. Over subsequent decades the team continued to compete in AMA Superbike with consistent factory backing from Suzuki.
Mat Mladin, one of Australia's greatest road racers, won six AMA Superbike championships in seven years riding for Yoshimura Suzuki. Ben Spies, who would go on to win the 2009 Superbike World Championship, claimed three consecutive AMA Superbike titles with the team in 2006, 2007, and 2008 before departing for World Superbikes.
Alongside domestic American competition, Yoshimura Suzuki participated in international endurance racing as part of Suzuki's global motorsport effort. The Suzuka 8 Hours was a priority event, consistent with both the team's Japanese heritage and Suzuki's emphasis on the race as a flagship annual campaign. The team's earliest international endurance success came in 1978 with Cooley and Baldwin's Suzuka 8 Hours victory.
In the FIM Endurance World Championship, Yoshimura Suzuki represented one of the most recognisable identities under Suzuki's racing banner, carrying the team's distinctive livery and technical philosophy across Le Mans, the Bol d'Or, and the Suzuka endurance calendar.
Pops Yoshimura died of cancer in March 1995, but was inducted into the AMA Motorcycle Hall of Fame in 2000 in recognition of his foundational contribution to superbike racing. His son carried on the company after his death, and the Yoshimura name remained competitive at the highest levels of AMA and international superbike competition for decades. In 2014, a special "Yoshimura Legends" entry raced at the Suzuka 8 Hours to mark the team's 60th anniversary, with Kevin Schwantz and Satoshi Tsujimoto aboard a commemorative machine.
The Yoshimura Suzuki partnership is regarded as one of the defining team-manufacturer alliances in superbike racing history, bridging the early days of production-based competition through to modern professional racing.