A system comprises a tube and a bender. The tube comprises a first cylindrical portion and a second cylindrical portion. An undulated portion is disposed between the first cylindrical portion and the second cylindrical portion. Alternatively, the tube can comprise a plurality of cylindrical portions and undulated portions. The bender comprises a plurality of L-shaped brackets and a plurality of U-shaped brackets, and further includes a driving rod subassembly.

A connector includes a thermally conductive body defining a passage for a fluid to flow through a duct and configured with an electric heating apparatus situated around the passage. A clip is situated around a portion of the body including one or more snap-in receptacles situated peripherally with respect to the body and configured to fit an electric connection of the electric heating apparatus.

An exhaust heat recovery apparatus is installed proximate an engine and at a front side of a warm-up catalytic converter in an exhaust system, where the exhaust system includes an exhaust line connected with the engine, and the warm-up catalytic converter is installed at the exhaust line. The exhaust heat recovery apparatus includes a bellows unit which is of a dual-pipe type and exchanges heat between exhaust gas emitted through the exhaust line and coolant circulating from a cooling system to the engine.

A flexible conduit element with an end portion that is designed for attachment to a rigid conduit element. The flexible conduit includes a bellows member, an interlock member, an outer fixing member and a connection nozzle. An attachment portion of the connection nozzle extends beyond the outer fixing member and the interlock member and ends in a flared shape to form a gas-tight seal.

An exhaust component assembly includes a first exhaust component extending along a first axis, a second exhaust component extending along a second axis, and a mixer having a mixer inlet portion connected to an outlet from the first exhaust component and a mixer outlet portion connected to an inlet to the second exhaust component. A flexible connection couples the mixer inlet portion to the mixer outlet portion.

A system and method including a non-metallic shell to prevent debris from contacting a component of an exhaust system is disclosed. The shell may be formed from silicone. The shell may also form part of an assembly including a metallic corrugated body, which may be positioned between two pipe sections of the exhaust system. The shell may be separate from an exhaust coupler and be secured separately to the two pipe sections connected to the exhaust coupler.

A vehicular exhaust pipe structure includes an outer pipe extending along a front-rear direction of a vehicle and an inner pipe disposed inside the outer pipe along an axial direction of the outer pipe. The inner pipe is joined to the outer pipe such that a vacuum layer is formed between the inner pipe and the outer pipe. The inner pipe includes a pseudo-cylindrical concave polyhedral shell-shaped part.

A connector includes a thermally conductive body defining a passage for a fluid to flow through a duct and configured with an electric heating apparatus situated around the passage. A clip is situated around a portion of the body including one or more snap-in receptacles situated peripherally with respect to the body and configured to fit an electric connection of the electric heating apparatus.

An exhaust device for an internal combustion engine of a saddled vehicle includes an exhaust muffler disposed on an outer side of a rear wheel so as to overlap the rear wheel when viewed from a side a muffler protector which covers the muffler. The muffler protector includes an inner protector half body covering the exhaust muffler from the rear wheel side and an outer protector half body covering the exhaust muffler from a vehicle outer side opposite to the rear wheel The inner protector half body is detachably mounted on the exhaust muffler or the outer protector half body while maintaining a state in which the outer protector half body is mounted on the exhaust muffler.

An exhaust muffler includes first and second pipes which extend through a casing, and which are disposed so that a downstream end of the first pipe faces an upstream end of the second pipe, wherein the downstream end of the first pipe and the upstream end of the second pipe are disposed so as to be spaced from each other in an axial direction, one end part of a support member having a circular cross section that has a smaller diameter than those of the first and the second pipes is fixed to one of a first lid member covering an opening at the downstream end of the first pipe and a second lid member covering an opening at the upstream end of the second pipe, and the other end part of the support member is slidably fitted to the other of the first and the second lid members.