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Piston Sets Include:
Pro-Xtreme Piston Sets Include:
Increased power output and improved engine efficiency
ideal for high-boost setups
Factory Valve Size is 31
ARP Head Stud Kit, BMW S14 NA Piston Sets Include:This ARP head stud Kit is designed for the BMW S14 B20, S14B23, S14B25, S14B27 engines found in the E30 M3. Installing ARP head studs can provide several benefits, including increased clamping force, improved head gasket sealing, and greater overall engine strength. This is especially important in high performance and racing applications where the engine is subjected to increased stress and higher temperatures. Before installing ARP head studs, it is
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