{"id":836993,"date":"2026-10-31T18:58:53","date_gmt":"2026-10-31T18:58:53","guid":{"rendered":"https:\/\/tunerscapital.si\/product\/acl-race-glavni-lezaji-za-bmw-n55-n54-s55\/"},"modified":"2026-10-31T18:58:57","modified_gmt":"2026-10-31T18:58:57","slug":"acl-race-glavni-lezaji-za-bmw-n55-n54-s55","status":"publish","type":"product","link":"https:\/\/tunerscapital.eu\/en\/product\/acl-race-glavni-lezaji-za-bmw-n55-n54-s55\/","title":{"rendered":"ACL Race main bearings for BMW N55 \/ N54 \/ S55 \u2026"},"content":{"rendered":"<p>ACL Race main bearings are high-performance trimetal bearings designed for higher RPM conditions and demanding engine operation. Their construction combines high strength, tight wall-thickness tolerances and increased eccentricity to assist in forming a hydrodynamic oil film.<\/p>\n<p>The set includes 3\/4-grooved main bearings, optimizing the bearing load-carrying surface and oil flow to the conrod bearings. Enlarged ID chamfers on the bearing edges accommodate larger fillet radii on performance crankshafts.<\/p>\n<ul>\n<li>Trimetal construction with a high-strength overlay plate of reduced thickness<\/li>\n<li>Increased crush for improved bearing retention in the housing<\/li>\n<li>Flash plating eliminated from the back for improved heat transfer and grip<\/li>\n<li>Increased eccentricity to compensate for bore distortion at high RPM<\/li>\n<li>3\/4-grooved main bearings for optimized oil flow<\/li>\n<li>Tight, consistent wall-thickness tolerances<\/li>\n<\/ul>\n<p><strong>Suitable for:<\/strong> BMW 1 I (E81\/E82\/E87\/E88) \/ II (F20\/F21), BMW 2 I (F22\/F23\/F45\/F46\/F87), BMW 3 V (E90\/E91\/E92\/E93) \/ VI (F30\/F31\/F34\/F80), BMW 4 I (F32\/F33\/F36\/F82\/F83), BMW 5-Gran-Turismo I (F07), BMW 5 VI (F10\/F11), BMW 6 III (F06\/F12\/F13), BMW 7 V (F01\/F02\/F03\/F04), BMW M2 I (F22\/F23\/F45\/F46\/F87), BMW M3 VI (F30\/F31\/F34\/F80), BMW X3 II (F25), BMW X4 I (F26), BMW X5 II (E70) \/ III (F15\/F85), BMW X6 I (E71\/E72) \/ II (F16\/F86), BMW Z4 II (E89).<\/p>\n<p><strong>Engines:<\/strong> N55, N54, S55, N52 (N55B30A, N54B30A, S55B30A, N52B25, S55B30). Please check your vehicle\u2019s engine code (registration document or VIN) before ordering; if in doubt, contact us and we will check for you.<\/p>\n<h3>Sizes<\/h3>\n<p>STD is the standard size for an unground crankshaft. Undersizes (\u22120.25 mm, \u22120.50 mm \u2026) are for a reground crank, and \u201c+0.025 mm clearance\u201d (X) is for highly stressed engines. Your machine shop chooses the size after measuring.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ACL Race trimetal main bearings for higher RPM use, with tight tolerances, increased eccentricity and 3\/4-grooved main bearings.<\/p>\n","protected":false},"featured_media":836999,"comment_status":"open","ping_status":"closed","template":"","meta":{"ep_exclude_from_search":false},"product_brand":[147343],"product_cat":[147260],"product_tag":[],"class_list":["post-836993","product","type-product","status-publish","has-post-thumbnail","tc_lang-en","tc_lang-hr","product_brand-acl","product_cat-lezaji-motorja","product_shipping_class-dostava-teza-do-2kg","pa_proizvajalec-acl","first","onbackorder","taxable","shipping-taxable","purchasable","product-type-variable","has-default-attributes"],"_links":{"self":[{"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/product\/836993","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/comments?post=836993"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/media\/836999"}],"wp:attachment":[{"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/media?parent=836993"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/product_brand?post=836993"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/product_cat?post=836993"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/tunerscapital.eu\/en\/wp-json\/wp\/v2\/product_tag?post=836993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}