Ever looked at your KLRs rear disk brake master cylinder? There's a vulnerable hydraulic line plastic elbow at the rear of the cylinder that can fail under even mild impacts with ground-based objects. No fun getting back to civilization with front brake alone! The alloy guard above protects the entire master cylinder, and uses the stock mounting bolts. It even looks good doing its job! Under $20 plus shipping. Call Motorsports in Wichita, KS at 316-685-0223. Ask for part #55020-1502 (I think this part is actually made for a Ninja street model) .... and tell them you learned about this item here.