Razor Tip Slip-On - Aprilia RSV4 / Tuono V4 Aprilia RSV4 Sporting Toce's Signature Razor Tip Slipon assembly. This is how the RSV4 and Tuono should sound! MUFFLER ASSEMBLIES THAT ARE MADE IN THE USA Constructed of Chemically Certified... MSRP: Was: Now: $798.00 Choose Options