Related Clues:

• A ten-speed has ten
• They're shifted
• Transmission units
• Swiss watch parts
• Zips along
• Meshing parts
• Car-transmission settings
• First, second, etc.
• Bicycle parts
• Risks a ticket
• Photographer's concerns
• They often get engaged
• Tenspeed features
• Four-on-the-floor options
• Gets ready, with 'up'