These Darton Sleeves that start with a "200" in the part number are considered "repair sleeves". They are not a performance product, and should only be used when repairing OEM applications. This is a replacement sleeve liner to repair a factory engine. Brand New! Unflanged Darton Dry Sleeves for Honda/Acura B18 engines replace your factory cylinder liners with high strength iron sleeves, eliminating a weak link in your engine and providing you with the strength needed to get the full potential from your setup without losing any sleep worrying about cracking a factory sleeve and taking the engine out.
This particular model of sleeve is designed as a stock replacement sleeve, not a high power race engine. This would be perfect if you are just looking to get a proper cylinder wall finish without compromising the structural integrity of your block by removing material.