MUST BE INSTALLED WITH WSBK 2023 TANK, SWINGARM, RADIATOR. Spark Exhaust Ducati Panigale V4 S/R and Streetfighter V4 S "Double Grid-O" Titanium Full Exhaust System (WSBK Replica 23 - Updated 2.0 System). Constructed with dual titanium silencers fitted with carbon ending. From the experience gained in WSBK, Spark offers a double exhaust underseat left and right side designed to get the maximum performance. Dyno Tested for maximum horsepower increase, 105-110 db @ 5500rpm. Ducati Panigale V4 exhausts are handcrafted in Italy. Non-Homologated Racing Version for Maximum Performance. For perfect performance, throttle response and durability, ECU remapping is recommended. Race headers each have an O2 bung hole on each collector (1-2-3-4). COMPATIBLE WITH ORIGINAL FAIRINGS AND CLOSED FAIRINGS FOR RACE USE. NOT COMPATIBLE WITH ORIGINAL LICENSE PLATE HOLDER. NOT COMPATIBLE WITH PASSENGER FOOTPEGS. *Silencers are welded to the Y-pipe as per WSBK regulations. *Does not include removable DB Killer.