.25 BMW M5 F10 F90 - ACL-8B1578H-.25 - The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings are available for many of the popular 4, 6 & 8 cylinder applications and feature: High strength overlay plate with reduced thickness for improved fatigue properties Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing. Increased crush for improved bearing retention Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing. Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films. 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings. Tight consistent wall tolerances to help you maintain consistent clearances. Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts. Tech. Info Tunnel [mm]: 57.600 / 57.616Shaft [mm]: 53.971 / 53.990Max. Wall: 1.794Max. Length: 15Half type: Identical halves Note: Each shell has 2 locating notches. Suits engines from 3/2011 on. Weight [KG]: 0.34 Application BMW 5 (F10) N63B44A 550 i BMW 5 (F10) N63B44A 550 i x Drive BMW 5 (F10) S63B44B M5 BMW 5 (F10) N63B44B 550 i BMW 5 (F10) N63B44B 550 i x Drive BMW 5 (F10) S63B44B M5 Competition BMW 5 (F10) S63B44B M5 30th Anniversary BMW 5 (G30, F90) S63B44B M5 BMW 5 (G30, F90) N63B44C M 550 i x Drive BMW 5 (G30, F90) S63B44B M5 Competition BMW 5 (G30, F90) S63B44B M5 CS BMW 5 Gran Turismo (F07) N63B44A 550 i BMW 5 Gran Turismo (F07) N63B44A 550 i x Drive BMW 5 Gran Turismo (F07) N63B44A 550 i BMW 5 Gran Turismo (F07) N63B44B 550 i BMW 5 Gran Turismo (F07) N63B44B 550 i x Drive BMW 5 Touring (F11) N63B44A 550 i BMW 5 Touring (F11) N63B44B 550 i BMW 6 Convertible (F12) N63B44A 650 i BMW 6 Convertible (F12) N63B44A 650 i x Drive BMW 6 Convertible (F12) N63B44A 650 i BMW 6 Convertible (F12) N63B44B 650 i BMW 6 Convertible (F12) N63B44A 650 i x Drive BMW 6 Convertible (F12) N63B44B 650 i x Drive BMW 6 Convertible (F12) S63B44B M6 BMW 6 Convertible (F12) S63B44B M6 Competition BMW 6 Convertible (F12) S63B44B M6 Competition BMW 6 Gran Coupe (F06) N63B44B 650 i BMW 6 Gran Coupe (F06) N63B44B 650 i x Drive BMW 6 Gran Coupe (F06) S63B44B M6 Competition BMW 6 Gran Coupe (F06) S63B44B M6 BMW 6 Gran Coupe (F06) S63B44B M6 Competition BMW 6 coupe (F13) N63B44A 650 i BMW 6 coupe (F13) N63B44A 650 i x Drive BMW 6 coupe (F13) N63B44B 650 i BMW 6 coupe (F13) N63B44B 650 i x Drive BMW 6 coupe (F13) S63B44B M6 BMW 6 coupe (F13) S63B44B M6 Competition BMW 6 coupe (F13) S63B44B M6 Competition BMW 7 (F01, F02, F03, F04) N63B44A 750 i, Li BMW 7 (F01, F02, F03, F04) N63B44A 750 i, Li x Drive BMW 7 (F01, F02, F03, F04) N63B44A Active Hybrid 7 BMW 7 (F01, F02, F03, F04) N63B44B 750 i, Li BMW 7 (F01, F02, F03, F04) N63B44B 750 i, Li x Drive BMW 7 (G11, G12) N63B44C 750 i, Li BMW 7 (G11, G12) N63B44C 750 i, Li x Drive BMW 8 Convertible (G14, F91) S63B44B M8 BMW 8 Convertible (G14, F91) S63B44B M8 Competition BMW 8 Gran Coupe (G16, F93) S63B44B M8 BMW 8 Gran Coupe (G16, F93) S63B44B M8 Competition BMW 8 coupe (G15, F92) S63B44B M8 BMW 8 coupe (G15, F92) S63B44B M8 Competition BMW All N63B44 All BMW M5 F10, F90 S63B44 All BMW X5 (E70) S63B44A M BMW X5 (E70) N63B44A x Drive 50 i BMW X5 (F15, F85) N63B44B x Drive 50 i BMW X5 (F15, F85) S63B44B M BMW X5 (G05, F95) S63B44B M BMW X5 (G05, F95) S63B44B M Competition BMW X6 (E71, E72) N63B44A x Drive 50 i BMW X6 (E71, E72) N63B44A x Drive 50 i BMW X6 (E71, E72) N63B44A Active Hybrid BMW X6 (E71, E72) S63B44A M BMW X6 (F16, F86) S63B44B M BMW X6 (F16, F86) N63B44B x Drive 50 i BMW X6 (G06, F96) S63B44B M BMW X6 (G06, F96) S63B44B M Competition