Maserati 4200GT Coupe Spyder GranSport sport cats (KATALYSATOR CATALYSTS) Direct replacement for OEM ceramic catalysts with 'flat' cross section around steering rack! Doesn't decrease the ground clearance of the car, compared to other solutions! Exceptional exhaust sound for Your supercar with these upgraded cat pipes! This offer is suitable only for EU version 4 bolts exhaust headers. But feel free to ask other configurations if necessary, it can be customized and made up to Your wish. Standard OEM ceramic converters are dangerous for your vehicle motor because they tend to crumble during time and small parts of it can get into engine causing serious damage to it !!! MAGNAFLOW converters (made in USA) used in this kit have a metallic working element, so they are 100% safe for your engine and will last much longer. You don't need to modify anything on the car. It is direct replacement for OEM cat sections! Handmade installation kit uses 304 grade stainless steel (Edelstahl). Quality TIG welded assembly. Mirror polished finish. Laser Cut Mounting Flanges 15mm thickness. Free flowing design - better performance and efficiency. Pipe design eliminate the so called squashed 'flat' cross section around steering rack In section around steering rack used 90mm pipe pressed, so total cross-sectional area is equal to round 60mm Maserati exhaust pipe.  MAGNAFLOW quality sport metallic high flow catalytic converters (made in US), model 59555 (high load version), rated up to 600bhp each. Catalytic converters are 130mm in diameter and have metal-core 200 cpsi (Cells Per Square Inch). Converters compatible with OBD II Euro 4 standard. These converters are very light weight and allow more exhaust flow through the pipe. Front lambda sensors positioned before the cats and rear sensors after the cats, so you will not get check engine light (CEL).  Car can pass all emissions tests (MOT).  No ECU reprogramming is needed after installing these cats. Thermocouple connectors will be included in the kit according to Your car modification (but not displayed on some attached pictures). Simple installation - can be DIY. Standard OEM wire length of the lambda sensors is enough for installation (no need to change lambda sensors) ! These cats sections give Your car about 18 hp additional power and much better throttle response!!! Tested for good/exact fit prior sale. Weight 10kg (for both pipes) Check sound with these sport cats installed: https://www.youtube.com/watch?v=jJ8Xh_iov1I Check sound with these  sport cats and X pipe (see my other items): https://www.youtube.com/watch?v=lDR-rq4uCXI Notice! These cats have better flow compared to Larini design (with two twin thin pipes in parallel): 2 x 37mm twin pipes cross-sectional area 1,5 times smaller than 60mm pipe and about the same area as original squashed Maserati OEM design. See attached picture for comparison of cross-sectional area, different designs. Postage cost: Europe - 30 EUR Europe(non EU) - 50 EUR USA and Canada - 65 EUR Australia and New Zealand - 95 EUR others - please contact me Order will be posted in 7 business days. Delivery to Europe is generally 2-10 days.  Returns possible by agreement with the seller. Buyer pays return postage. Compatible Maserati OEM part numbers: Right catalyst: 214443 205830 194714 184803 205420 Left catalyst: 205833 214444 194715 184804 205421