Wiseco Honda K-Series +10.5cc Dome 1.181x89.0mm Piston Shelf Stock Kit

The Wiseco K650M89AP piston kit includes 4 pistons, 4 wrist pins, 4 wrist pin locks, and 4 rings. These Wiseco Sport Compact pistons are crafted from dedicated in-house forgings, ensuring a lightweight design with superior strength and optimal performance. They feature specially designed valve pockets, complex dome and crown shapes, steel nitride/napier xx rings, and optimized skirt profiles. Some forged pistons are enhanced with Wiseco's ArmorGlide® skirt coating, developed through rigorous in-house dyno testing. This coating provides exceptional toughness, lubrication, and bond technology to minimize friction, maximize horsepower, and improve wear resistance. ArmorGlide® also allows for a tighter piston-to-bore fit, leading to a better ring seal and reduced noise from piston rock.