For Audi RS3 TT RS 5 Cylinder 2.5L. Bolts: Including ARP 2000 3/8" bolts (Note: Extra cost for upgrading to ARP L19 bolts). ARP 2000 bolts ,Optional ARP L19 fasteners available as an upgrade;. MaXpeedingRods H-beam connecting rods are designed for demanding racing applications to increase horsepower and efficiency.