ACL Race Series Main Bearings
A unique combination of design, metallurgy, and engineering delivers what drivers expect from high-performance Trimetal engine bearings.
Features
- Designed to withstand higher RPM conditions.
- High-strength overlay plate with reduced thickness for improved fatigue properties.
- Hardened steel backs on all connecting rod bearings to improve bearing lining support and assist with bearing retention in the housing.
- Increased crush for improved bearing retention.
- Elimination of flash plating on the bearing backs to improve heat transfer through the bearing shells and maximize grip between the bearings and the housing.
- Increased eccentricity to compensate for bore distortion at high RPM and to assist in the formation of a hydrodynamic oil film.
- 3/4 grooved main bearings optimize bearing load-carrying surface area and oil flow to the connecting rod bearings.
- Tight and consistent wall tolerances to maintain consistent clearances.
- Enlarged ID chamfers on bearing edges to accommodate the large fillet radii of performance crankshafts.
Applications
- Honda/Acura B18C1 / B18C5
- 1994–2001 Acura Integra GS-R
- 2000–2001 Acura Integra Type R
What's in the box?
- (1) Complete set of main bearings
Warranty
- Standard manufacturer warranty
Before Ordering
〇 Regarding Import Consumption Tax
At Shaftoya Shopping Site, we pay the import consumption tax incurred at the time of import on your behalf, so you will not be charged any additional fees beyond the total amount paid at checkout.
〇 Confirmation of Compatibility
Since our entire product database is based on North American vehicles (USDM), please verify compatibility with Japanese vehicles (JDM) before placing your order. (If you are unsure whether a listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to look into it for you.)
If an order is placed without verifying compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, manufacturer, and vehicle model in the tabs on our top page, this does not guarantee that they will fit Japanese model vehicles without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.
○ Regarding Shipping
Shipping costs are paid at the time of payment. Shipping estimates are calculated automatically once you enter your shipping address on the checkout page. For large items such as body parts, the actual shipping cost may occasionally differ significantly from the amount calculated automatically. In such cases, we will contact you individually via email.
Essentially, all products are shipped internationally from our US warehouse. Unlike domestic shipping in Japan, international shipping takes about 7 to 14 days, so please allow yourself enough time when ordering. If you are in a hurry, please contact us in advance to confirm delivery times. Note that all products are transported by air; they are never shipped by sea freight.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Please be aware that all products we handle are fundamentally designed and manufactured outside of Japan. They do not comply with the "Japanese Vehicle Inspection System," and we are unable to provide documents such as strength calculation reports for the purpose of these inspections. Therefore, all parts are sold for the purpose of "circuit, private property, or off-road use," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival. As all products are shipped internationally from outside Japan, there may be shipping damage to the packaging or the product itself. Please understand that we will only handle returns, refunds, or replacements for shipping-damaged goods, defective products, or incorrect items if contacted within 7 days of receipt. Please note that for products sold through our company, warranty support is handled "exclusively through us." We do not provide support through other third-party companies or agencies located in Japan.