ACL Nissan Calico Series Main Bearing Set Standard Size Nissan RB26DETT CT-1 Coated 7M2428HC-STD

Unlock peak engine performance with Terra Firma Automotive’s ACL Nissan Calico Series Main Bearing Set, designed specifically for the RB26DETT. This standard-size bearing set features the advanced CT-1 Dry Film Lubricant coating by Calico Coatings—an industry leader in racing-grade surface technology. Engineered to handle the extreme stress of high-revving, high-power RB engines, these coated bearings deliver superior strength, reduced friction, and unmatched reliability under pressure.

ACL’s partnership with Calico ensures a bearing surface that significantly reduces abrasive wear, offers excellent embedability, and provides consistent protection even during periods of limited lubrication. The CT-1 coating remains stable in the presence of dust and debris, making it ideal for motorsport environments where peak durability is critical.

Whether you're building a competition RB26DETT or refreshing a street-tuned GT-R powerplant, Terra Firma Automotive is your trusted source for premium ACL components. As enthusiasts ourselves, we understand the importance of using proven parts that enhance both longevity and performance. That’s why we offer the ACL Calico Series Main Bearing Set—not just as a replacement, but as a performance upgrade.

For RB26 builds that demand the best, count on Terra Firma Automotive to supply the finest in OEM and race-ready components. Order today and experience the confidence that only precision engineering and CT-1 coating can provide.

• CT-1 Dry Film Lubricant coating is applied as a spray process. Different surface preparation methods appropriate for the substrates will be used prior to the coating process. Coating thickness is varied to suit the application. Typical coating thickness for engine bearings is 0.00025” to 0.00030” inch (6 to 7.5 microns)
• Provides intermittent dry lubrication, Not affected by dust or dirt, Low coefficient of friction, Increases load carrying capacity, Thin coating to accommodate assembly constraints, Chemical resistance, Corrosion protection, Reduced friction and drag resulting in decreased parasitic load
• CT-1 coated bearings have excellent embeded abiliy characteristics, allowing debris contaminates to embed in the bearing, avoiding damage to the crank.
• Under normal conditions performance bearing overlays withstand 12,000psi. CT-1 coated bearings increase this load capacity to 180,000psi.
• CT-1 coated bearings have shown a reduction in oil temperatures as much as 15˚F - 20˚F. Lower oil temperatures also aid in the loss of viscosity due to extreme heat.
• Theoretically a crankshaft rides on a thin film of oil that protects both the crank and bearing. Real world experience such as cold starts and rough terrain conditions have proven otherwise. CT-1 coated engine bearings provide a dry film lubricant that protects against intermediate oil starvation.