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Stilo ST5 ST4 Side Air System Kit Sparco QRT designed for Porsche 996 997 and designed for Porsche 996 997 and 986 987 Boxster Cayman and touchscreen‑compatible fingertips—ideal for data‑acquisition or telemetry use on‑track internal helmet transfer tube Lightweight aluminum adapter installs to the side port of your Stilo ST5 ST4 Helmet and allows for the easy connection of a forced air system
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