ACL Race Series main bearings with Calico CT-1 coating use a dry film lubricant that helps reduce friction and abrasive wear. The coating provides intermittent dry lubrication and is not affected by dust or dirt.
CT-1 is engineered for the extreme conditions of high-performance engines. Increased embedability allows debris contaminants to embed in the bearing, helping avoid damage to the crankshaft, while the dry film provides additional protection during intermittent oil starvation.
- Calico CT-1 coating with a low coefficient of friction
- Coating thickness for engine bearings: 6 to 7.5 microns
- Oil and fuel resistant
- Corrosion protection and reduced drag
- Oil temperature reduction of up to 8–11 °C
- ACL Race Series main bearing set
Suitable for: Nissan 100NX I (B13), Nissan 200SX I (S13).
Engines: SR20DET, SR20DE. 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.

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