Main bearings 0.30 Peugeot TU1JP, TU3JP, TU5J2, TU5J4 XU5J, XU5JP 1124-1360-1580-1587cc Race Series ACL ACL Race bearings are designed to work in the most extreme conditions and the most strenuous engines. ideally suited to the engine. The advanced technological process allows the bushing to adapt to the deformation occurring at high revolutions and helps in the formation of hydrodynamic oil films. also in several other dimensions: STDX -0.025 mm (looser than nominal) STD +0.000 mm (nominal) +0.025 mm (tighter than nominal) +0.25 mm (first shaft grinding) +0.50 mm (second shaft grinding)