ACL 6B2960H-.50 Race Series Rod Bearing Set +0.50mm for Nissan RB25/RB26

Vehicle Fitment

• Nissan Skyline (R32/R33/R34), RB25DE/RB25DET/RB25DET NEO/RB26DETT

Fitment Notes

• +0.50mm oversize, standard oil clearance
• Requires crank journals machined 0.50mm under standard
• Distinct from "HX" extra-clearance variant
• Distinct from STD/.025/.25 oversize siblings
• Sold as a set -- one engine set

Features

• Tri-metal construction
• Hardened steel backing
• Large chamfer for performance crank fillets
• Increased crush, tighter wall tolerance
• Improved overlay, reduced thickness
• Increased eccentricity for high-RPM bore distortion
• No flash plating -- improved heat transfer

Specifications

• Size: +0.50mm oversize
• Construction: Tri-metal
• Backing: Hardened steel
• Series: ACL Race Series

Included Components

• 1x Rod Bearing Set (upper and lower halves, full engine set)

Product Description

The ACL Race Series 6B2960H-.50 rod bearing set is purpose-built for rebuilding Nissan RB25DE, RB25DET, RB25DET NEO, and RB26DETT engines with rod journals machined 0.50mm under standard specification. Tri-metal construction with a hardened steel backing gives these bearings the strength to hold up under sustained high-RPM, high-boost conditions where standard bearings fatigue and fail.

A large chamfer accommodates the bigger crankshaft fillets common on performance cranks, while increased crush and tighter wall tolerance ensure consistent seating and clearance across the full set. Improved overlay plating with reduced thickness boosts fatigue strength, and increased eccentricity helps maintain proper hydrodynamic oil film formation even as bore distortion increases at high RPM.

Backed by ACL's motorsports-proven Race Series engineering -- a standard in engines that have set records from drift competition to NHRA and IHRA drag racing. Note: this set uses standard oil clearance; for extra clearance, ACL's "HX" series is the correct alternative. Confirm your crank has been machined to +0.50mm before ordering.