Motorcycle Glossary

Common motorcycle terminology explained.

Engine Terms

• CC: Cubic centimeters, engine displacement
• Bore: Diameter of the cylinder
• Stroke: Distance piston travels
• Compression Ratio: Ratio of cylinder volumes
• HP: Horsepower, engine power output
• Torque: Rotational force, measured in Nm or lb-ft
• RPM: Revolutions Per Minute, engine speed

Chassis Terms

• Wheelbase: Distance between wheel centers
• Rake: Fork angle from vertical
• Trail: Distance from steering axis to ground contact
• Seat Height: Distance from ground to seat
• Ground Clearance: Distance from ground to lowest point
• Wet Weight: Weight with fluids and fuel
• Dry Weight: Weight without fluids

Performance Terms

• 0-60 mph: Acceleration time
• Top Speed: Maximum speed
• Fuel Economy: MPG or L/100km
• Power-to-Weight: Horsepower per unit weight

Suspension Terms

• Travel: Suspension movement range
• Fork: Front suspension assembly
• Shock/Monoshock: Rear suspension
• Preload: Initial spring compression
• Damping: Resistance to movement

Braking Terms

• Disc Brake: Most common braking system
• Drum Brake: Older braking design
• ABS: Anti-lock Braking System
• Caliper: Holds brake pads

Explore our database to see these specifications in action!