Motorcycle Glossary
Engine speed (rpm)
In Turkish: Devir (d/d)
In short
Engine speed is the number of crankshaft revolutions per minute (rpm), shown on the tachometer.
- Idle speed: the lowest speed the engine runs at with the throttle closed
- Peak torque and power rpm: given in the specifications (e.g. "11 kW / 8,500 rpm")
- Redline: the highest safe engine speed; a rev limiter protects the engine
How fast the engine turns at a given road speed depends on the gear and the final drive ratio; find the speed at a given rpm with our gear ratio calculator.
Also known as (including Turkish names)
- RPM
- Motor devri
- d/d
- Devir sayısı
Last updated: October 9, 2026