Mat Mladin rides the highest line on Daytona's 31-degree west banking in 1998. His style was to leave a little margin rather than hug the wall. The GSX-R750 used in the 1998 AMA season was the previous carbureted model; the new EFI version would not appear until 1999. Mladin finished 4th in this race. Photo courtesy of Tomoya Ishibashi.
1996-1998: Enter the GSX-R750 SRAD
In 1996, the Suzuki GSX-R750 was completely redesigned as the Model T. Its second-generation water-cooled inline-four used a DOHC 16-valve layout and displaced 749cc, with a 72 x 46mm bore and stroke. Compared with the 70 x 48.7mm dimensions of the oil-cooled and first-generation water-cooled engines, it was shorter-stroked, although its 72mm bore was smaller than the 73mm bore of the 1988 oil-cooled Model J. Suzuki finally adopted a right-side cam chain, allowing perfectly straight intake ports for all four combustion chambers. The cylinders received Suzuki Composite Electrochemical Material, or SCEM, plating. Compared with the previous cast-iron sleeves, this silicon-carbide electroplating alone saved 2kg.
For 1996, the GSX-R750 finally adopted an aluminum twin-spar frame. Its newly designed water-cooled engine was tilted forward 25 degrees, and the intake used a modern downdraft layout. The AMA Superbike was a factory machine developed at Suzuki's Hamamatsu headquarters, with Showa suspension front and rear and AP Racing six-piston front brake calipers. Even among factory machines, specifications varied: Scott Russell's one-off Daytona entry and the All-Japan factory Superbikes used KYB suspension, while Yoshimura's All-Japan and Suzuka 8 Hours machines used Öhlins units front and rear. Photo courtesy of Tomoya Ishibashi.
The Model T's engine was mounted at a 25-degree forward angle and fed by the SRAD (Suzuki Ram Air Direct) system. Fresh air entered through intakes on both sides of the upper fairing, traveled through ducts and a large-capacity airbox, and reached four downdraft Mikuni BDSR 39mm carburetors. The engine was exceptionally compact. A three-piece crankcase and triangular arrangement of the crankshaft and two transmission shafts shortened its overall length.
The chassis evolved from the GSX-R750's traditional aluminum double-cradle frame to the model's first aluminum twin-spar design. Its layout resembled that of Suzuki's RGV-Γ500 Grand Prix racer and offered high rigidity with an excellent balance of stiffness. The 1988 GSX-R400 had been the first GSX-R to use an aluminum twin-spar frame, but the 1996 model brought the design to the GSX-R750 for the first time.
The all-new 1996 GSX-R750 Model T, later known as the SRAD 750, produced 130ps at 11,500rpm, weighed 179kg dry—the same as the original 1985 Model F—and had a 1,400mm wheelbase, matching the 1993 RGV-Γ500 Grand Prix machine. It delivered racing-machine levels of power, lightness, and compactness in a production motorcycle.
At the 1996 AMA season opener at Daytona, Yoshimura Suzuki's #9 Aaron Yates and #21 Pascal Picotte dominated the 750 Supersport race and ran 1-2 all the way to the finish. In this near-stock class, the new GSX-R750 demonstrated its enormous potential. Photo courtesy of Tomoya Ishibashi.
The Model T delivered immediate results in the 1996 AMA 750 Supersport series. Because this near-stock class allowed changes only to items such as the exhaust, rear shock, fork internals, and footpegs, the base model's performance was decisive. The GSX-R750T won all ten races: factory riders Aaron Yates won five and Pascal Picotte four, while satellite rider Michael Barnes won once. Yates took the championship, with Picotte and Barnes completing a 1-2-3 sweep of the standings.
Victory Lane after the 1996 Daytona 750 Supersport race. Runner-up Pascal Picotte's Yoshimura Suzuki GSX-R750 Model T is in the foreground. It wears grooved Dunlop tires, a Race Tech fork-damper kit, and SBS brake pads. Race winner Aaron Yates is the rider whose face is visible, with 3rd-place finisher Doug Chandler of Muzzy Kawasaki in the background. At the time, riders commonly entered both Superbike and either the 750 or 600 Supersport class. Photo courtesy of Tomoya Ishibashi.
Yoshimura entered the 1996 AMA Superbike season with Picotte, Yates, and Mat Mladin. Scott Russell of the Lucky Strike Suzuki 500cc Grand Prix team joined them for a one-off appearance at the season-opening Daytona 200. Russell, already a three-time winner of the race, was known as the "Daytona Meister" and rode a machine in the same Lucky Strike colors as the Grand Prix bikes. By 1998, he would have five Daytona 200 victories.
The final became a match race between Russell and Miguel Duhamel on an American Honda RC45. Russell missed the win by just 0.01 seconds and finished 2nd. Picotte placed 4th, Yates 7th, and Mladin 11th.
During the 1996 season, Picotte won one of ten races and finished 5th in the standings. Yates also won once and placed 6th. Mladin went winless but earned three podiums and frequent top finishes, ending the season 4th overall. It was a strong debut year for the GSX-R750 Model T.
Tamaki Serizawa's 1996 Yoshimura Suzuki GSX-R750 All-Japan Superbike. This was the preseason configuration; the race bikes later switched from Showa to Öhlins suspension front and rear. The carburetors were Mikuni TMR40s fitted with Yoshimura MJN. Suzuki's factory machine also used MJN, although to a different specification. Photo courtesy of Yoshimura Archives.
Yoshimura retained Tamaki Serizawa for a second season in the 1996 All-Japan Superbike Championship. The team struggled to tune the Model T, however, and Serizawa could not fully master the machine, finishing 11th in the standings. Suzuki factory rider Katsuaki Fujiwara fared better, finishing 2nd overall.
For the 1996 Suzuka 8 Hours, Yoshimura paired Tamaki Serizawa with Toshiyuki Hamaguchi and finished 12th. Among Suzuki's factory-supported teams, Lucky Strike Suzuki's Katsuaki Fujiwara / Akira Ryo finished 6th, SERT Castrol Suzuki's Doug Polen / Juan-Éric Gomez 9th, and Team Suzuki WSB's Kirk McCarthy / John Reynolds 10th. Polen had returned to Suzuki that year. The highly anticipated Lucky Strike Suzuki pairing of Scott Russell / Terry Rymer retired.
In 1997, the SRAD 750's second season, the GSX-R750T won all ten AMA 750 Supersport races. Jason Pridmore, son of three-time AMA Superbike Champion Reg Pridmore, won eight races and the title. Mario Duhamel and Doug Polen, who had returned to Suzuki in 1996, won the remaining two.
Picotte and Yates represented Suzuki Factory in the 1997 AMA 600 Supersport series on the new GSX-R600. Picotte won four of ten races but finished a close 2nd in the standings, just six points behind Honda's Miguel Duhamel, who also won four. Yates won twice and finished 3rd.
The Suzuki GSX-R600 used a 65.4 x 44.5mm bore and stroke for 599.5cc—6.5mm less bore and 1.5mm less stroke than the GSX-R750 Model T. Visually, it differed from the 750 mainly in its conventional 45mm forks in place of the 750's inverted 43mm units and in having an unbraced swingarm. Its Mikuni BDSR carburetors were reduced from 39mm to 36mm. The 600 weighed 174kg dry versus the 750's 179kg, had a 1,390mm wheelbase versus 1,400mm, and produced 106ps versus 130ps. The result was a light, compact, and powerful 600cc Supersport machine.
The AMA 600 Supersport class became a national championship in 1986. Internationally, a World Series was held in 1997 and 1998, and in 1999 the category became a World Championship run alongside the FIM Superbike World Championship. It would become a central class in near-stock production racing.
The 1996 Suzuka 8 Hours near Turn 2. Leading the group is #12 Serizawa on the Yoshimura Suzuki GP-1 Plus GSX-R750. Behind him are #78 Haruchika Aoki on an Ultraman RT Sakurai Honda RC45, #8 Akira Ryo on a Kawasaki Racing Team ZX-7RR, and #11 Aaron Slight on a Castrol Honda RC45. Haruchika, the third of the Aoki brothers, was paired with his eldest brother, Nobuatsu. Photo courtesy of Osamu Kidachi.
Yoshimura Suzuki went winless in the 1997 AMA Superbike season. Yates finished 5th in the standings, Picotte 6th, and flat-track star Larry Pegram, who had switched to road racing, 8th.
In the All-Japan Superbike series, Serizawa ranked 8th. Yoshiteru Konishi, who made a one-off appearance in the Suzuka 200km to prepare for the Suzuka 8 Hours, finished 15th to earn one point, placing him 39th overall. Suzuki Factory rider Katsuaki Fujiwara performed superbly, securing 2nd place in the standings.
The 1997 Suzuka 8 Hours, a wet race, saw Serizawa / Konishi momentarily running in 3rd position. However, Konishi made contact with Honda Factory rider Alexandre Barros, who was closing in, causing only Konishi to crash. After repairs in the pits, the Yoshimura Suzuki restarted, but crashed again and was forced to retire.
Among the other Suzuki teams at the Suzuka 8 Hours, Lucky Strike Suzuki's Peter Goddard / Doug Polen finished 5th. The pair went on to win the FIM Endurance World Championship title. Polen had now won the Superbike World Championship in 1991 and 1992 with Ducati, the 1997 EWC title with Suzuki, the 1993 AMA Superbike Championship with Ducati, the 1989 All-Japan TT-F1 and TT-F3 titles with Yoshimura, and the 1994 Suzuka 8 Hours with Honda. After moving to Honda in 1998, he would win a second consecutive EWC title. He had conquered the major four-stroke championships and races around the world, with the Daytona 200 the one notable exception.
Yoshimura's Larry Pegram riding the Suzuki TL1000R at the Daytona infield in 1998. Although this TL1000R was a factory machine built by Suzuki headquarters, it suffered from a lack of power, partly because the larger EFI throttle bodies permitted in SBK were not allowed in AMA races. Photo courtesy of Tomoya Ishibashi.
For 1998, the GSX-R750 evolved into the Model W. EFI replaced the BDSR 39mm carburetors, and the butterfly-type throttle bodies measured 46mm, a diameter impractical for carburetors. The two-stage EFI strategy calculated the air-fuel ratio primarily from engine speed and intake-manifold pressure at low rpm, then relied mainly on engine speed and throttle position as rpm and load increased. The engine also received direct-ignition CDI coils. Closed-deck cylinder cooling passages replaced the previous open-deck design, increasing cylinder rigidity. Other changes included lighter components, revised cam profiles, and a close-ratio transmission.
Another new machine joined Suzuki's AMA Superbike lineup alongside the GSX-R750: the TL1000R. Designed for rules allowing four-cylinder engines up to 750cc and twins up to 1,000cc, it paired an aluminum twin-spar frame with a 996cc, water-cooled, 90-degree V-twin. The DOHC four-valve engine had a 98 x 66mm bore and stroke, electronic fuel injection with two injectors per cylinder, and an output of 135ps at 9,500rpm.
At the 1998 All-Japan Championship, #45 Hamaguchi on the carbureted Yoshimura GSX-R750 battles #6 Akira Ryo on the fuel-injected Suzuki factory GSX-R750. Behind them is privateer #36 Takahiro Sohwa on a Honda RC45. Photo courtesy of Osamu Kidachi.
AMA homologation for the GSX-R750 Model W was delayed by a year, so it would not compete until 1999. In the All-Japan Championship and Suzuka 8 Hours, Yoshimura deliberately retained the proven Mikuni TMR 40mm carburetors with MJN, while the Suzuki factory team of Keiichi Kitagawa and Akira Ryo chose EFI. Factory rider Atsushi Watanabe raced a TL1000R during the first half of the season for development purposes, then switched to the GSX-R750 for the second half.
For the 1998 AMA Superbike series, Yoshimura fielded Mladin and Yates on the conventional carbureted GSX-R750 and Pegram and Steve Crevier on the new TL1000R. Mladin won once and finished 3rd in the standings, while Yates won twice and placed 5th. Crevier narrowly missed the podium with a 4th-place finish, scored nine top-10s in 13 races, and ended the season 7th overall. Pegram finished 10th.
Yoshimura Suzuki continued as a factory entrant in the 1998 AMA 600 Supersport series. Crevier won only once in 13 races but consistently finished near the front and secured his first AMA championship. Pegram finished 8th in the standings, while Yates won twice and placed 10th. Before joining American Honda, Nicky Hayden won once on a HyperCycle Suzuki GSX-R600 and finished 4th overall. In the privateer-dominated 750 Supersport class, Richard Alexander took his first title with one win, while Hayden recorded a class-high five victories but finished 4th in the standings.
The Yoshimura Suzuki GSX-R750 prepared for the 1998 Suzuka 8 Hours. Yoshimura deliberately chose Mikuni TMR 40mm carburetors with Yoshimura MJN. Öhlins supplied the front and rear suspension, and the front brakes used six-piston Nissin calipers. The rain tires fitted at both ends were for moving the bike around the paddock. Photo courtesy of Osamu Kidachi.
Yoshimura fielded Hamaguchi in the 1998 All-Japan Superbike series. He opened the season with a strong 5th at Motegi, but that remained his best result and he finished 9th in the standings. Naoto Ogura made a one-off appearance in Round 4, the Suzuka 200km, as preparation for the Suzuka 8 Hours. He finished 11th and earned five points.
Hamaguchi and Ogura then teamed up for the 1998 Suzuka 8 Hours. Starting rider Hamaguchi ran strongly against the factory teams before handing the bike to Ogura. Only ten laps later, however, engine trouble forced Ogura into the pits and ended their race.
In 1999, Yoshimura embarked on a new challenge in the All-Japan Championship and Suzuka 8 Hours. The team was about to enter the Formula X category, an unlimited arena in which it could build machines free from conventional production-based restrictions.
Stories and photos supplied by Yoshimura Japan / Osamu Kidachi / Tomoya Ishibashi
Written by Tomoya Ishibashi
Edited by Bike Bros Magazines
Published on June 23, 2025