Manley 94-01 Acura Integra GSR (B18C1) 81.5mm +.5mm Oversize Bore 11.0:1 Dome Piston Set with Rings

If you're rebuilding the engine in your 1994-2001 Acura Integra GSR with the B18C1 engine, this set of forged pistons from Manley Performance is a solid choice for boosting performance and durability. These pistons are designed with an 11.0:1 compression ratio and are +.5mm oversize, meaning they are 81.5mm in bore diameter, which is crucial for engines that have been bored out during a rebuild. Manley is a well-known name among professional engine builders for a reason; their pistons are built to handle the demands of performance applications.

These aren't just generic pistons; they're crafted from domestic 2618 alloy forgings, which are known for their strength and ability to perform under pressure. The pistons feature proven cam and barrel skirt profiles that help them run smoothly against the cylinder walls, reducing wear and contributing to power output. Manley also pays close attention to the details, ensuring the ring lands and grooves are machined to exacting standards. This precision leads to a better seal with the piston rings, which is key for maximizing compression and power. The set includes premium chrome moly wrist pins, and the unique fixturing Manley uses allows for precise machining of both the skirt and ring grooves in one operation, ensuring they are perfectly square to each other.

This set is designed as a direct replacement for your stock pistons, but with enhanced materials and design for improved performance and longevity. Remember that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures when rebuilding your engine.