Of course, this is also true when you're cruising the freeway surrounded by unpredictable idiots. When your ride is set up with GMC Jimmy performance brake calipers you know you'll have the stopping power when you need it. Tests show that the GMC Jimmy performance brake calipers featured here at AutoAnything can deliver up to 30% more clamping power than ordinary GMC Jimmy brake calipers. That's a margin of safety we always want to have. Plus, crafted from advanced materials like aerospace-grade billet aluminum our Jimmy performance brake calipers are lighter and extremely resistant to corrosion.