Mountain Bike Quiz
Questions: 16 · 10 minutes
1. In suspension setup, what is “sag”?
The sideways flex of a wheel under cornering load
The delay before a hydraulic brake engages
The total travel left after the fork bottoms out
The amount suspension compresses under the rider's normal weight
2. On a rocky ride, your rear tire repeatedly hits the rim even though the tire is undamaged. What is the most likely setup issue?
The tire pressure is too low for the load and terrain
The rebound damping is too slow
The brake rotor is slightly warped
The handlebar roll is too far forward
3. Your helmet strikes the ground during a hard crash, but no crack is visible. What is the appropriate response?
Keep using it because only visible cracks affect protection
Test it by pressing firmly on the impact area
Add a second layer of padding inside the shell
Replace it according to the manufacturer's crash guidance
4. A rider installs a new chain on a heavily used drivetrain, and it skips under strong pedaling in certain rear gears. What is the most likely cause?
The suspension has too much sag
The cassette cogs are worn and no longer mesh well with the new chain
The front brake pads are contaminated
The tire tread direction is reversed
5. What is the primary role of the pronounced side knobs on many mountain bike tires?
Providing grip when the bike leans in corners
Increasing braking power on paved roads
Preventing the rim from contacting rocks
Reducing chain noise on rough ground
6. A pump is attached to a Presta valve, but no air enters the tire. What step may have been missed?
Removing the entire valve core from the stem
Pressing the valve farther into the rim
Turning the wheel until the valve is at the bottom
Unscrewing the small knurled tip to open the valve
7. Your leading pedal is approaching a high rock beside the trail. Which technique can reduce the chance of a pedal strike while maintaining momentum?
Keep both cranks vertical until the rear wheel passes
Time or ratchet the pedal stroke so the vulnerable pedal clears the rock
Shift into the hardest gear and pedal faster
Turn the front wheel toward the rock at contact
8. Which body position generally provides the best control on a steep but rideable descent?
Sit tall on the saddle with your arms straight
Keep one pedal down and lean heavily over the handlebar
Move as far behind the saddle as possible and lock your knees
Stand with level pedals, bent limbs, and your weight balanced low
9. After the derailleur side of a bike hits a rock, shifting becomes accurate in some gears but misaligned in others. What should be checked first?
The fork air pressure
The brake lever reach
The derailleur hanger alignment
The rear hub spoke count
10. What is the main purpose of a dropper seatpost?
To change saddle angle automatically on climbs
To absorb impacts in place of rear suspension
To lower and raise saddle height without stopping
To adjust chain tension while riding
11. Two riders meet on a narrow, two-way singletrack: one is climbing and the other is descending. Who should normally yield?
The climbing rider, because moving slowly makes stopping easier
The descending rider, giving the climbing rider room to continue
Whichever rider has the more expensive bike
Neither rider; both should continue until one leaves the trail
12. After heavy rain, your tires begin leaving deep, lasting ruts in a natural-surface trail. What is the most responsible choice?
Ride faster so each tire contacts the mud for less time
Leave the trail and wait for conditions that will not cause significant damage
Lower tire pressure until the tread floats over every rut
Continue riding but avoid using the brakes
13. You are approaching a loose, flat corner with more speed than intended. Which braking approach usually preserves the most cornering grip?
Do most of the braking before entering, then ease off through the turn
Apply only the rear brake throughout the entire turn
Grab the front brake sharply at the corner's midpoint
Avoid braking before the corner and skid at the exit
14. As your front wheel reaches a small trail obstacle, which action best helps it roll over without a harsh impact?
Shift all your weight onto the handlebar
Lock the rear brake before the front wheel makes contact
Unweight the front wheel while maintaining controlled momentum
Turn the handlebar sharply just before contact
15. After landing a bump, the rear suspension springs back so quickly that the bike feels bouncy and unsettled. Which adjustment is most relevant?
Add rebound damping to slow the return
Reduce compression damping to its minimum setting
Increase tire pressure until the tire no longer deforms
Lower the saddle angle at the nose
16. What does it mean when a tubeless mountain bike tire “burps” during a hard turn?
Sealant has dried into a lump inside the tire
The valve core has become permanently blocked
The bead briefly loses its seal and releases some air
The casing has stretched because the tire is overinflated