Wiseco performance pistons 12.5:1 compression ratio AP (K20 engines)

Wiseco's Sport Compact pistons are made from dedicated forgings produced in-house to give you a light weight piston with superior strength and optimal design.
Being the multivalve piston technology leader, the line features specially designed valve pockets, complex dome and crown shapes, the steel nitride/napier xx rings and optimized skirt profiles.

Wiseco pistons go through more finishing processes than any other piston on the market, without driving the cost up.
They come with more features standard than any other piston on the market, at a more affordable price than many of the competitors.
All of the Wiseco pistons for this application come standard with anti-friction skirt coating which helps minimize scuffing during break-in and lower friction on the cylinder wall.
The top face of the piston is textured to improve the combustion characteristics, and all kits come with rings, pins and locks.

Meaning AP: Armor Plated Pistons. Coating that hardens with heat. Wiseco's patented design.

This Piston comes with Wiseco's new Armor Plating Coating. Armor Plated wiseco pistons have almost a bronze colored tint to the top of the piston and the wrist pin bore. Wiseco's Armor Plating is an abrasion resistant plating that raises the hardness of the aluminum, increases the durability of the ring grooves, prevents micro-welding of the piston rings, reduces carbon buildup and combats corrosion caused by detonation. Wiseco's most popular pistons now include Armor Plating.

Bore mm oversize:  86, 86.50, 87, 87.5, 88, 89
Comp. ht.:   30
Dome dish:   5cc
Deck clearance:   0
Pin diam.:   22