diff --git a/src/pages/Index.tsx b/src/pages/Index.tsx
index 639443e..3869889 100644
--- a/src/pages/Index.tsx
+++ b/src/pages/Index.tsx
@@ -178,6 +178,15 @@ const Index = () => {
             {loadingDemoIFC ? <Loader2 className="h-4 w-4 animate-spin" /> : <Package className="h-4 w-4" />}
             {loadingDemoIFC ? 'Convertendo…' : 'Demo — 250 HP (IFC)'}
           </Button>
+
+          <Button
+            variant="outline"
+            className="h-12 w-full gap-2 border-muted-foreground/30 text-muted-foreground hover:border-primary hover:text-primary transition-all text-xs"
+            onClick={handleLoadDemoCotovelo}
+            disabled={loadingDemoCotovelo}>
+            {loadingDemoCotovelo ? <Loader2 className="h-4 w-4 animate-spin" /> : <Package className="h-4 w-4" />}
+            {loadingDemoCotovelo ? 'Convertendo…' : 'Demo — B126 Cotovelo (IFC)'}
+          </Button>
         </div>