Engine
- V-twin, 2-valve pushrod, Heron head
- 344-cc displacement; 62-mm bore x 57-mm stroke
- Supercharged with 300-cc Roots blower
- Lower compression ratio 9.3:1 (front), 9.1:1 (rear)
- Custom cam profiles
- Larger exhaust valves + enlarged seats
- Tuned-length dual exhaust megaphones
- Overhead rocker and valve spring oiling
- Ceramic coated pistons
- 9 trackside adjustable ignition timing curves and rev-limiter
- PerTronix Flame-Thrower ignition coils (40,000 V)
- Autolite racing spark plugs (5k ohm, NASCAR anti-detonation specials)
- Additional high-power fuel circuit
- 36.25 HP @ 7500 RPM and 29 ft-lb torque @ 5400 RPM *
* at the rear wheel. Conditions: 85 degrees Fahrenheit at El Mirage (2,913′ above SL); 44-46 inHg manifold pressure (Absolute) using the 75 CFM supercharger pulley.
Chassis & Suspension
- Wheelbase extended 51-mm = 1,445-mm
- Longer swingarm
- Lowered ride height
- Stiffer front & rear springs
- Removed front brake disc & caliper
- Relocated battery (forward, low)
Aerodynamics
- Custom fiberglass fairing
- Ram-air ducting for cylinder head cooling
- Frontal area = 6.3 sq. ft.
- Drag coefficient = 0.416 **
- Adjustable fairing angle of attack
- Trimmed rear fender & removed center + side stands
- Multiple front fender options (class-dependent)
- Custom Kamm tail with trailing edge inserts (class-dependent)
** Calculated C_D range = 0.412 – 0.416, based on power absorber test and race data