Vittoria Morsa 26 x 2.5 TNT Isotech G+ MTB Tyre - For Downhill / Enduro - TRVittoria Morsa 26 x 2. 5 TNT Isotech G+ MTB Tyre For Downhill Enduro TR From the Enduro World Series, to the Sea Otter Classic, to Crankworx, the Morsa has proven itself as a formidable weapon of choice for fast rolling Enduro and DH courses everywhere. How can a tire with so much traction roll this fast? The answer is the ramped leading edge design, medium tread depth, and of course the 4C Graphene compound. Carvy loam trails and technical off camber