Plug-in flute tuning exhaust, connection: 32mm, Ø: 70mm, length: 690mm, mounting without clamp, ideal for tuning/moto racing, suitable for Kreidler, Zündapp, Hercules, Puch and many more, not STvZo approved, high quality, made in Europe by Jamarcol, A-quality: no visible weld seam, unbeatable price.