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Title: Athena 100 mm Big Bore Cylinder Kit  
Category: Motorcycle Parts  
Brand: Athena Parts  
Description: A lightweight, race‑designed big bore cylinder kit that boosts power on Suzuki RM‑Z 450s.  
Details: Features an aluminum cylinder with nickel‑carbide coating, widened water jackets, forged molybdenum‑coated piston, and includes all necessary hardware for a quick, no‑machining install.

Price is $