4th to 3rd unexpected shifting

[Catchina]

I was riding in 4th gear at a brisk pace on some back roads when I came across a bumpy patch of road. All of a sudden the bike shifted into 3rd, seems to have been caused by a bump, the rpm's went up to match the bikes speed and it caused sudden engine braking. Scared the **** out of me, close call.

Has anyone heard of anything like this happening?

[mogu83]

I have to ask. Where was your left foot when you hit the bump?

[Catchina]

I have to ask. Where was your left foot when you hit the bump?

That's a good point, operator error can't be ruled out completely. I normally ride with the balls of my feet on the pegs so my toe would not normally be too close to the shifter.

[MTBeemer]

I'd do nothing and worry not unless and until it happens again and perhaps again. Ride over the same bump a few times and make sure the shifter is not contacted.