MX-5 Wiseco Forged Pistons 1mm Oversize

Wiseco pistons are widely recognized as some of the finest performance pistons in the world. Forged for high strength and machined to our specifications for reliable and quiet Miata use. The moly coating on the skirts cut down frictional losses. These are not the same Wisecos sold elsewhere! We even use higher quality rings than normal for better sealing on the street.

Perfect for extreme use, such as high boost operation. Use with our K1 rods for a bulletproof bottom end. This combination weighs 1/4 lb per cylinder less than stock. Includes rings and tapered wrist pins and is sold in set of four. Compression lies between 8,5 and 8,8:1.
The original compression ratio for MK2.5 models is 10:1, for MK1 models 9,5:1 and for MK1 9:1