O.S. Engine OS45269000 Exhaust Pipe Set 60 Degree for FS-40 FS-61 FS-80  [OS45269000]

Exhaust pipe set for FS series

This is an RC-scale exhaust pipe set designed for use with O.S. Engine's FS series models listed. The 60 degree bend geometry is intended to match the exhaust flow and pulse timing of FS-40, FS-61, and FS-80 engines, helping builders and tuners focus exhaust routing and back-pressure tuning without altering engine internals.

The set is supplied as replacement/upgrade parts for existing tuned-pipe assemblies. Fitment centers on the FS-series manifold and mounting points, so verify manifold outlet alignment and gasket seating before final tightening. Basic hand tools are sufficient for installation; avoid overtightening flange fasteners to maintain sealing surfaces.

In tuning use, this pipe set acts as a component in the exhaust system that affects the engine's pulse scavenging and midrange response. Expect adjustments to carburetor needle settings or header length to be required after fitting, as exhaust timing and back-pressure characteristics change.