By themselves... no, they won't do much. But they might help triangulate if you have frame, swingarm and fork sliders all installed. It's one of those things, is the $30-60 of additional insurance worth it to you? To most people it's a waste. I can see it both ways.
Street/Track Bike: 2004 Yamaha R6 White
Retired: 2004 Honda 599 Asphalt
Wheels: '98 CBR900RR Rear, '97 CBR600F3 Front
RizomaŽ Mods: Frame sliders | 22mm bar | Sportline grips | Bar ends + sliders | Radial Naked mirrors | Rearsets | Crankcase Slider
Other Mods: Pazzo Shorties | Michelin Power Pure | CustomLED Integrated Taillight | Fasst Co. Bar Weights | Ducati Turn Signals