HMF 436223606071 Penland Pro Exhaust: Suzuki King Quad 400 Fits: 08-12 Slip On Round Side mounts Turn-Down-Brushed End Cap INCREASED TORQUE: The Torque Range Modifier adds more bottom-end torque for rough conditions. 4-6 dB INCREASE: Depending on the model, you can expect a 4-6 dB increase over stock. UNRESTRICTED CORE: The Penland Pro uses a 2 1/8 non-restrictive core for maximum flow.