- May 23, 2000
- 1,386
- 0
I just found out through another post that the stock sprockets on an XR400 are 15/45 and I'm totally happy with the combo. My brother-in-law also has an XR 400 and he'd like to get a little more pop out of the bottom end by switching out a sprocket. Is anyone running a sprocket combo other than stock that they're really happy with? Thanks in advance for any info.