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A Carrillo Platinum Series STD-bore piston for 2004–2019 Yamaha YFZ450/R applications, specified with a 13.5:1 compression ratio and profiled pin bore. This piston is intended for engine rebuilds and replacements where stock bore dimensions are retained. It preserves the exact bore size while offering the Platinum Series specification for compatibility with high-revving ATV engines.
Carrillo 04-19 Yamaha YFZ450/R Platinum Series Piston - STD Bore Piston - 13.5:1 Profiled Pin Bore
