ACL STANDARD SIZE HIGH PERFORMANCE ROD BEARING SET BMW N54 / N55 / S55

ACL bearings are used for tuning and engine upgrades where you want better quality with higher bearing capacity than normal standard bearings.

Improvements of material, dynamic thickness, heat conduction, oil grooves and oil distribution are some of the points that make ACL one of the leading bearing manufacturers.

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.

Compatibility:

BMW 1 Series E8x – 08-13 135i – 306
BMW 1 Series E8x – 08-13 1M – 340
BMW 3 Series E9x – 06-13 335i – 306
BMW 1 Series F2x – 11-20 135i – 320 / 326
BMW 2 Series F2x / F87 – 13-20 235i – 326
BMW 2 Series F2x / F87 – 13-20 M2 – 370
BMW 3 Series F3x / F80 – 13-19 335i -306
BMW 4 Series F3x / F8x – 13-19 435i – 306
BMW M2 (F87) CS S55B30 | 450 PS
BMW M2 (F87) Competition S55B30 | 410 PS
BMW M3 (F80) CS S55B30 | 460 PS
BMW M3 (F80) Competition S55B30 | 450 PS
BMW M3 (F80) S55B30 | 431 PS
BMW M4 (F82) CS S55B30 | 460 PS
BMW M4 (F82) Competition S55B30 | 450 PS
BMW M4 (F82) GTS S55B30 | 500 PS
BMW M4 (F82) S55B30 | 431 PS