Shop › ARP 206-4205 Image 1 of 1 ARP 206-4205 $155.00 Cylinder Head Studs, Pro Series, 12-Point Nuts, Triumph, 2.0, 2.5L, GT6, TR6, Kit Add To Cart Added! Cylinder Head Studs, Pro Series, 12-Point Nuts, Triumph, 2.0, 2.5L, GT6, TR6, Kit