Do these ACL rod bearings require crankshaft machining?

No, these are standard size (STD) rod bearings. They are designed to fit directly onto your stock crankshaft without requiring any machining, making them a straightforward upgrade for your B18C1 or B18C5 engine.

What makes these 'Race Series' bearings different from standard bearings?

The Race Series bearings feature a specialized overlay material. This construction offers improved durability and better resistance to oil film breakdown, which is crucial for handling the higher loads and stresses found in performance-tuned engines.

What is the benefit of the specialized overlay material?

The specialized overlay provides better forgiveness for minor imperfections on the crankshaft surface. It also helps maintain a stronger oil film under high-stress conditions, leading to more consistent lubrication and reduced wear over time.

ACL Honda/Acura 4 B18C1/C5 1797cc (Standard Size) Race Series Rod Bearing Set

Specifications

Brand: ACL
Part #: 4B1925HXD-STD
UPC: 9315726452783

ACL Honda/Acura 4 B18C1/C5 1797cc (Standard Size) Race Series Rod Bearing Set

Name: ACL Honda/Acura 4 B18C1/C5 1797cc (Standard Size) Race Series Rod Bearing Set
Brand: ACL
SKU: acl-acl-honda-acura-4-b18c1-c5-1797cc-standard-size-race-series-rod-bearing-set-t14-198859
Price: 71.60 USD
Availability: BackOrder

$71.60

On Backorder — Expected to ship by Jul 9, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1994-2001 Acura Integra. ACL Race Series rod bearings are a standard size upgrade for B18C1/C5 engines, offering improved durability for performance builds.

Key Features

Fits 1994-2001 Acura Integra.
ACL Race Series rod bearings are designed for high-performance B18C1 and B18C5 engines.
Standard size (STD) fits stock crankshafts without machining.
Features a specialized overlay material for improved durability and oil film strength.
Helps maintain consistent lubrication and reduce wear under high-stress conditions.

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Fits this vehicle

Acura Integra 1994-2001

Product Details

When you're building a performance engine for your 1994-2001 Acura Integra, especially one that's going to see some serious track time or spirited driving, the right internal components make all the difference. These ACL Race Series rod bearings are built to handle the increased loads and higher RPMs that come with a performance-tuned B18C1 or B18C5 engine. They're a standard size, meaning they're designed to fit directly onto your stock crankshaft without needing any machining, which is a big plus when you're trying to keep a build on schedule.

ACL has a solid reputation for making well-built engine bearings, and this Race Series set is no exception. They use a specialized overlay material that's designed to be more forgiving of imperfections in the crankshaft surface and also offers better resistance to oil film breakdown under high stress. This means you get more consistent lubrication and reduced wear, even when you're pushing your engine hard. If you're already planning on upgrading your pistons, camshafts, or other internal engine parts, these bearings are a smart choice to ensure the longevity and reliability of your build.

When installing these bearings, it's always a good idea to have a clean workspace and follow the manufacturer's torque specifications precisely. If you're unsure about any part of the installation process, consulting your service manual or a trusted mechanic is always recommended.