Body
All Atom body panels are non-structural, hand-laminated composite panels of either fiberglass (standard) or carbon fiber (upgrade). Using Formula One laminating techniques, the Atom's composite panels are of world class quality and finish. These composite panels maintain the minimalist nature of the vehicle and provide a significant weight savings over conventional production body panels manufactured in steel or aluminum. For an even further weight savings (along with the aesthetic of the weave pattern!), customers have the option of upgrading to carbon fiber body panels. Weight reduction for a carbon body panel set is around 30% over the standard fiberglass panels.
Chassis
Brakes F/R: n.a.
Tires F-R: 195/50 R15
Driveline: Rear Wheel Drive
Engine
Type: Supercharged Inline-4
Displacement cu in (cc): 122 (1998)
Power bhp (kW) at RPM: 300(224) / n.a.
Torque lb-ft (Nm) at RPM: n.a.
Redline at RPM: n.a.
Exterior
Length × Width × Height in: 134.3 × 70.7 × 47.1
Weight lb (kg): 1005 (456)
Performance
Acceleration 0-60 mph s: 2.7
Top Speed mph (km/h): 155 (250)
Fuel Economy EPA city/highway mpg (l/100 km): n.a.
Drivetrain
Introduced in 2004 on the Saturn ION Red Line, the Ecotec 2.0L SC (supercharged) also powers the 2005 Chevrolet Cobalt SS Supercharged coupe. It is compact and lightweight, and its Eaton M62 supercharger adds 40 percent more power to the Ecotec 2.0L engine compared to a naturally aspirated version. The M62 supercharger utilizes a helical roots compressor and integral pressure control and produces a maximum of 12 psi of boost. The boosted intake flow exits into an all-new matched intake manifold with an integral air-to-liquid heat exchange intake charge cooler system.
Wheels
Brammo Motorsports, the official Atom distributor in the US, offers the highest quality racing wheels on the market today for use on the Atom. They offer two aluminum wheel styles in two color options from Team Dynamics Racing along with a magnesium wheel package from Dymag in the UK.
Racing
The US built Atom is designed exclusively for racing and open track days, and performs as a true racecar should. With extensive testing at the GM Proving Grounds along with suspension tuned by Koni and engines tuned by GM Performance, the Atom is built for speed on the track.
Brammo offers customers several options to configure their car anywhere from a fun trackday car to a hardcore racing weapon. Racing features include upgraded Alcon braking package, dry sump lubrication system, magnesium wheels, and carbon fiber front and rear wings.
Already approved for open lapping and NASA HPDE events, look for updates as Brammo attempts to get the Atom homologated for competitive racing events in the US.