k s muffler set twin dle60 ephil x76For DLE60, Ephil X76 For engines in the 60 70cc class, header offset (D) 70mm This Muffler Set includes: 2x Muffler KS 3079 6 (D= 55 mm, Lg= 285 mm), 2x Manifold 22 mm with metal flexible tube and D= mid muffler offset 70mm 2x PTFE tube 22mm x 60 mm, 4x Spring clamps KS 926 We recommend the KS ComfortMount Mounting System Art. No.: 503 (not included in the set) This set fits most Pilot RC planes, such as the 90" Extra, 88" Laser and 73" Pitts