A special edition R33 was released on November 3, 1997 called the 400R, with R standing for Racing. Overall development and planning was by NISMO (Nissan Motorsports International). But, its bored and stroked RB26DETT engine, the RBX-GT2, was engineered and produced by REINIK (later renamed REIMAX – "REINIK to the MAX"). The engine featured 77.7 mm stroke crankshaft (73.7 mm stock), forged 87 mm pistons (86 mm cast stock), upgraded rods, polished ports, high lift camshafts, upgraded oil system, larger exhaust manifolds and higher output turbochargers. NISMO produced an upgraded exhaust, a twin-plate clutch, and intercooler system. Nismo brake pads were fitted to the car. 400R exclusive aerodynamic updates were also added, such as wider fenders, side skirts, a new rear bumper, a new front bumper with bigger air scoops, and a redesigned bonnet and rear spoiler made of carbon fiber. The 400R was also fitted with 18x10 Nismo LM-GT1s. The car developed 400 horsepower (300 kW) and 347 lb·ft (470 N·m), which allowed a top speed of over 186 mph (300 km/h), and enabled it to reach 0–97 km/h in 4.0 seconds. 500 hp is easily achieved with a higher boost setting. NISMO had originally planned to produce 100 units of the 400R, however only 44 units were made before production of the R33 ended in 1998.