Exhaust ‘S-Flow’ Centre Twin N451-10-00/ST

€ 785,00 ex. Taxes
€ 949,85 inc. Taxes

*; the late turbo 451s will need the additional “XL downpipe”  (N451-10-06/ST) to connect the exhaust system to the turbo


Want to add more power and sound to your smart car? This listing is for a Stainless Steel S-flow system , designed by S-Mann, hand built in Netherlands and tested on the road on our demo car for 3 years and tested during the European smart cup series is the s-flow system. The system has maximum pipe diameters (2”) and a 300 cell/square inch metal! catalic converter to create the maximum flow. Depending on what engine and software you have in your smart car it will get you 5 to 20 hp extra and the engine will pick up and respond a lot faster. The exhaust has an adjustable and removable stainless Steel “Center Twin” end pipe, 76mm (3 inch) diameter. Mounted on a 451 turbo the exhausts sound is “deep” but not too loud, perfect for road use and long distances. Mounted on a non turbo 451 it is louder. Designed to fit all smart 451 turbos and non turbo with the exhaust manifold pointing to the right side of the car (doesn’t fit USA type systems) For the later turbo 451s you will need to buy the “XL downpipe”  (N451-10-06/ST)

We used to sell all kinds of exhaust brands for smart cars for the last 15 years and found out all off them cracked and failed after a while. Therefore we developed this exhaust and after 2 years of testing the s-flow system came on the market. The system has a flexible and rubber mount that keeps the vibrations down. We know it is the best smart car exhaust on the market!

Please note that it has no approval and check if you need to have in the country you live in. the exhaust system will pass every emission test!

S-mann is not liable for any personal injuries or material damages caused by or created through the improper use or installation of this product.


Be aware of illegal copy’s on the market being offered as s-mann products. The quality of these copy’s is very poor and they will damage your cars safety! Buying, selling and trading of these parts is illegal and forbidden by law!


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