Shift forks are usually bent from having your foot on the shifter when landing from jumps. Popping out of gear is rounded dogs, not engaging is rounded dogs.

What is a selector fork?

Selector forks slide with or over these rods and fit over saddle-like grooves machined on the outer sliding–dog clutch hub. When a selector fork is pushed towards one of the constant-mesh gearwheels, it moves the particular dog-clutch hub over the exposed ring of dog teeth on the gearwheel.

What is sliding mesh gear box?

Sliding mesh gear boxes are made with spur gear. … The selector fork moves the gear and moves the perfect mesh with the required gear in lay shaft when the gear lever is shifted. A idler gear is provided for reverse gearing. Thus the power form the clutch shaft is transmitted to the main shaft through the lay shaft.