EXHAUST CONNECTION KIT for H2O CYL.KIT applies to Code 3115374 ALUMIN-CYLINDER KIT Ø 52 H2O MHR BIG BORE Testa Rossa mod-head 3115385 ALUMIN-CYLINDER KIT Ø 52 H2O MHR BIG BORE Testa Rossa mod-head 3116992 ALUMIN-CYLINDER KIT Ø 52 H2O MHR BIG BORE Testa Rossa mod-head 3115883 CYLINDER KIT Ø 52 MHR FLANGED MOUNT testa rossa