Amazon.com: ELING Waterproof RPM Tachometer Gauge 0-12000RPM with LED Digital Adjustable Hour Meter and RPM Alarm 85mm with Backlight 12V/24V : Automotive
12k rpm boi : r/initiald
Racecarsdirect.com - SMITH Mechanical Tachometer 12000 RPM
12000 RPM All Automation Game Engines. - YouTube
Here's Betty, an Old Subaru That Revs to 12,000 RPM | The Drive