ACL Race Series are trimetal rod bearings designed for demanding operating conditions and higher engine RPM. The high-strength overlay plate has reduced thickness to improve fatigue properties.
Hardened steel backs support the bearing lining and assist with bearing retention in the housing. Increased eccentricity compensates for bore distortion at high RPM and assists in the formation of hydrodynamic oil films.
- Trimetal construction with a high-strength overlay plate of reduced thickness
- Hardened steel backs on all rod bearings to support the bearing lining
- Increased crush for improved bearing retention in the housing
- No flash plating on the back for improved heat transfer and housing grip
- Increased eccentricity to compensate for bore distortion at high RPM
Suitable for: Nissan Skyline I (R32) / II (R34) / III (R33).
Engines: RB26DETT, RB25DET, RB25DE. 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.

Reviews
There are no reviews yet.