CP Piston & Ring Set for Toyota 1NZFE - Bore (75.5mm) - Size (+0.5mm) - Compression Ratio (9.0)

Starting with a 75.5mm bore size, this CP Pistons set is built for the Toyota 1NZFE engine found in your 2004-2006 Scion xA or xB. These aren't just stock replacements; they're forged pistons, meaning they start as a solid block of aluminum alloy that's heated and then hammered into shape under immense pressure. This process creates a much stronger, more durable piston than cast ones, which are poured into a mold. If you're rebuilding the top end of your engine, especially if you're looking for something that can handle more than stock power levels, forged pistons are a solid choice.

This particular set is a +0.5mm oversize, which is important to note if you're re-boring your cylinders. It's designed to achieve a 9.0:1 compression ratio, a common target for naturally aspirated or mildly boosted builds. CP Pistons is a well-known name in performance engine components, and this set reflects their focus on creating parts that can withstand the rigors of performance driving. You'll get the pistons and the rings needed to complete the assembly, all designed to fit right into your 1NZFE engine.

When installing these, make sure your cylinder bores are properly prepped to the specified 75.5mm +0.5mm size, and always follow the manufacturer's recommended ring gap and installation procedures. This set is a significant upgrade for anyone looking to build a reliable and powerful engine for their Scion.