ACL Race main bearings are trimetal engine bearings designed for operation at higher RPM. Their combination of design, metallurgy and engineering supports consistent performance under demanding conditions.
This main bearing set uses design features that improve bearing retention, heat transfer and the formation of hydrodynamic oil films.
- High-strength overlay plate with reduced thickness for improved fatigue properties
- Increased crush for improved bearing retention in the housing
- Elimination of flash plating on the back for improved heat transfer and greater grip in the housing
- Increased eccentricity to compensate for bore distortion at high RPM
- 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 maintain consistent clearances
Suitable for: Audi A3 II (8P) / III (8V), Audi A4 III (B8) / IV (B9), Audi A5 Sportback II (F5A/F5F), Audi A5 I (B8) / II (F5/F53), Audi A6 IV (C7), Audi A7 I (4G), Audi A8 III (D4), Audi Q3 I (8U), Audi Q5 I (8R) / II (FY), Audi Q7 I (4M), Audi Q8 I (4M), Audi S1 I (8X), Audi S3 III (8V), Audi SQ2 I (GA), Audi TT II (8J) / III (FV), Audi Tts II (8S) and 25 more.
Engines: EA888 Gen3, EA888 Gen2, EA888 Gen1, EA888 (CWZA, CDAA, CJXB, CJXC, CJXD, CJXF, CJXG, DJHA, DJHB, DNUE, CHHB, CYFB, DJJA, DLRA, CNCD, CYMC, CYRB, CYRC, CDHA, CDHB, CNCE, CYNB, CYPA, CYPB …). Please check your vehicle’s engine code (registration document or VIN) before ordering; if in doubt, contact us and we will check for you.
Sizes
STD is the standard size for an unground crankshaft. Undersizes (−0.25 mm, −0.50 mm …) are for a reground crank, and “+0.025 mm clearance” (X) is for highly stressed engines. Your machine shop chooses the size after measuring.
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