Main elements of chassis (Aprilia RS125/3)

1. Headlight; 2. Left rearview mirror; 3. Clutch control; 4. Ignition switch / steering lock / parking lights; 5. Fuse carrier; 6. Fuel tank; 7. Seat lock; 8. Left-hand seat subframe cover; 9. Passenger seat; 10. Tail section; 11. Tail light; 12. Left-hand passenger footpeg (spring-loaded, snaps open/closed); 13. Rear brake disc; 14. Rear brake caliper; 15. Left-hand rider footpeg; 16. Left fairing cover; 17. Side stand; 18. Gear shift lever; 19. Gearbox oil sight glass; 20. Left body panel; 21. Warning horn; 22. Front fork; 23. Front mudguard

24. Engine Control Unit; 25. Rear brake master cylinder; 26. Rider seat; 27. Air cleaner; 28. Right-hand seat subframe cover; 29. Coolant expansion reservoir; 30. Battery; 31. Front brake fluid reservoir; 32. Right rearview mirror; 33. Front fairing; 34. Right body panel; 35. Front wheel; 36. Front brake disc; 37. Front brake caliper; 38. Rear brake fluid reservoir; 39. Rear shock absorber; 40. Rear brake lever; 41. Right rider footpeg; 42. Drive chain; 43. Rear swinging arm; 44. Rear wheel; 45. Right passenger footpeg (spring-loaded, snaps open/closed)