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Yamaha MT-07 DT

MT-07 DT

The 2021 Estenson Racing Yamaha MT-07 DT is a one-of-a-kind racer specific to American Flat Track racing. Designed around Yamaha’s MT-07 production engine, the prototype flat track machine was originally developed in house by Yamaha Motor Corporation, USA (YMUS).

In 2019, Estenson Racing took the project to the track and achieved early success, scoring a pair of wins on the TT tracks with JD Beach, including the brands’ first win in the Twins class since Scott Pearson in 1981. 

American Flat Track’s AFT SuperTwins rule book for production-based engines allows for up to 900cc and requires that the original engine cases, cylinders and heads are used, but porting, machining and modification is permitted. Starting with the MT-07’s original displacement, the team runs different engine displacements – between 700cc and 738cc – depending on the track. The rules also allow for changes to the crank, rods, pistons, valves, cam shafts and clutch. 

With the arrival of flat track racing’s modern era machines, electronics are now a part of the sport. Adjustments to fuel and spark maps, performance strategies and data collection are allowed, but traction control is still not permitted. Chassis wise, the frames are prototypes specific to flat track racing, either steel or aluminum for both the frames and swingarms. Suspension is open to anything commercially available and the minimum weight for each SuperTwins machine is set at 310 pounds. 

With increased support from YMUS since 2020, Estenson Racing continues to develop the MT-07 DT and looks to battle for top honors in American Flat Track’s premier class.  


Model MT-07 DT
Engine Type Liquid Cooled 4 stroke 8 Valve DOHC, Parallel Twin Cylinder with 270 degree Crossplane Crankshaft
Displacement 700cc-738cc
Lubrication system Wet Sump
Clutch Type Suter Slipper Clutch
Fuel System OEM
Ignition System Motec M130  
Starter System Electric
Transmission System Compact Stacked, Constant Mesh 6-speed
Final Transmission 14/45


Frame Tubular
Chassis Yamaha DT
Front Suspension Ohlins
Front Travel 120mm
Caster Angle 25 Degrees
Trail 75mm
Rear Suspension Ohlins
Rear Travel 65mm
Front Brake Beringer
Rear Brake TAW
Front Tire Dunlop DT4
Rear Tire Dunlop DT4


Overall Length: 2,080mm
Overall Width: 875mm
Overall Height 1,225mm
Seat Height 950mm
Wheelbase 1,380mm
Minimum Ground Clearance 225mm
Wet Weight 340lbs
Fuel Tank Capacity 2.2 Gal, 8.3 Liter
Oil Capacity 3 Liters