O.S. Engine OS26625510 E-4011 GT15HZ RC Exhaust Extension Adaptor  [OS26625510]

Exhaust outlet extension for scale engines

This RC-scale extension adaptor enables controlled extension or repositioning of exhaust piping on model engines, and is intended for use with exhaust and pipe assemblies rather than being a primary engine component.

Its role is to alter the outlet position or create additional clearance to prevent contact with nearby parts, making it practical when installing aftermarket mufflers or modifying pipe routing on compact builds.

Fitment is suited to hobbyists familiar with engine plumbing: align the adaptor with the exhaust outlet, engage threads or mating surfaces carefully, and tighten gradually while checking alignment and clearance. Always follow the engine manufacturer's instructions for torque and sealing to avoid leaks.

From a tuning perspective, small changes to pipe length and exit angle introduced by the adaptor can influence backpressure and packaging. Make incremental changes and test to understand any performance effects on your RC chassis.