OneUp Components Top Chainguide with Bashguard V2, ISCG05Eliminate dropped chains forever and more than double your chainring life with the new OneUp Components V2 Chain Guide. As the trend for lower and slacker bikes continues, chainring protection is becoming even more important. The OneUp Bash Guide uses the same simple, one tool installation and adjustment as our best selling ISCG05 Chain Guide, but adds more strength where you need it. The OneUp Bash Guide was developed with input from EWS World