- Bent or improperly installed handlebar
2. Steering head components
- Improperly installed upper bracket
- Improperly installed lower bracket (improperly tightened ring nut)
- Bent steering stem
- Damaged ball bearing or bearing race
3. Front fork leg(s)
- Uneven oil levels (both front fork legs)
- Unevenly tensioned fork spring (both front fork legs)
- Broken fork spring
- Bent or damaged inner tube
- Bent or damaged outer tube
4. Swingarm
- Worn bearing or bushing
- Bent or damaged swingarm
5. Rear shock absorber assembly(-ies)
- Faulty rear shock absorber spring
- Leaking oil or gas
6. Tire(s)
- Uneven tire pressures (front and rear)
- Incorrect tire pressure
- Uneven tire wear
7. Wheel(s)
- Incorrect wheel balance
- Deformed cast wheel
- Damaged wheel bearing
- Bent or loose wheel axle
- Excessive wheel runout
8. Frame
- Bent frame
- Damaged steering head pipe
- Improperly installed bearing race