American tuner RDSport has come up with a really nice package for the magnificent BMW Me E92. Starting from the looks, the tuner has stayed away from ostentatious kits, and just gives you new carbon fiber bumpers, roof and bootlid spoilers, flared wheelarches and some huge wheels! These small changes make the M3 much cooler. Of course they have put much more effort into the engine, and gave it a huge boost.
The 4.0 lite V8 engine of the M3 is upped to 4.6 liter in the RS46 by using larger, forged, light-weight, aluminum pistons, forged, billet connecting rods and new billet crankshaft with a longer stroke. Then it is garnished with a complete exhaust including; race, tubular headers with F1-style merge collectors, metal-matrix, sport, catalytic converters, X-Flow downpipe and sport silencers. With some other modification like carbon air box, larger-displacement, carbon plenum chamber, power pulley, lightweight clutch and flywheel, it delivers an amazing 524 hp! The torque is also 115 ft-lbs more than the standard.
The handling of the M3 RS46 is also enhanced by using Bilstein shocks and RDSport Springs which drop the car by 30mm at fornt and 25mm at the back. I also has 6-piston, aluminum monoblock calipers on the front and 4-piston monoblock calipers in the rear. As for the wheels you can have the RC8 Forged Monobloc lightweight rims, or the classic Racing Dynamics design. RDSport recommends Pirelli tires.