The top speed of most models was limited to no more than 156 mph if it could be achieved, some models such as the CDI were slower. An aftermarket version like the 2001 model year Brabus S V12 boosted the output of V-12 to at 5700 rpm and could do 0- in about 5.4 seconds. 2004 S 500 0- 6.0 s to 6.2 s Quarter mile 14.3 s 2001 S 500 with Sport package 0- 5.9 s Quarter mile 14.2 s 2001 Mercedes S 600 0- 5.3 s 0- 4.5 s (2003) Quarter mile 13.7 s 2003 S 55 0- 4.5 s 2001 S 320 CDI 0- 7.9 seconds 2001 S 430 0- 7.0 seconds Aftermarket and tuner The naturally aspirated V-8 was boosted by up to 30 hp, but the turbo and super-charged version was boosted 100-120 hp by reputable tuning companies. An additional 200 hp could be achieved with extensive modifications going as far as improved heat management and modifications to the intercooler for the M275 V-12 twin-turbo. Potential points of modification include intake, exhaust, fuel systems, transmissions, and the ECU. An example of an aftermarket version of the S-Class, was the 2001 Brabus S V12. This increased the displacement of the engine to 6.7 liters and the horsepower to 450. The changes also included interior luxury options like the BRABUS PC, enhanced leather trim options, and a 12-inch TFT (flat screen) display. The Brabus S V12 cost US$416,000 (416,000 DM) and needed any stock MB S 600 for the conversion. The Brabus had a top speed of almost 190 mph and various other changes, including different tires and rims (on the front 50.8 x 24.1 cm / 20.0 x 9.5 with 245/35ZR-20, and on the rear 50.8 x 24.1 cm / 20.0 x 9.5 also with 245/35ZR-20). examples Kleemann S 60 Kleemann also produced a limited slip differential for the W220 S-Class and some related models. Wald S-Class versions incl. black bison version Brabus S-Class version 2001 Brabus S V12 Brabus V-12 engine kit See Brabus#Mercedes-Benz S-Class Related vehicles Mercedes-Benz CL-Class (C215) Shorter coupe version of W220 shared many components and features from the sedan, albeit a completely unique aluminium & composite body construction riding on an 8 inch shorter wheelbase, with ABC suspension as standard equipment. V8 and V12 engines with their respective model nomenclature were carried over to the a 2-door coupe, no diesel or