R35 GT-R AMS Extreme-Duty Pistons

To improve the output of your VR38, we raised the compression ratio to increase horsepower throughout the powerband. This increase also produces more low end torque which reduces turbo lag and improves boost response.

Because the Alpha series packages produce 1000+ horsepower and extreme torque levels, these pistons are loaded with special features for strength and reliability:

Forged construction to handle the stress of over 1500HP!
Annular pin hole grooves with double forced oil holes prevent pinhole galling.
Teflon coated skirts reduce friction and prevent scuffing.
Extra thick ring lands provide superior ring groove support under extreme pressure by intersecting the ring groove and the pinhole
4340 taper bore, hard-chromed extra heavy duty pins and high performance piston rings finish the package.

The AMS Extreme-Duty Pistons come stock bore size and will even work with factory connecting rods without any additional machine work. Over-bore sizes are available by special order, please call.

Features:

Increased compression ratio for added horsepower and torque
Forged construction to withstand 1500+HP
Reduced turbo lag and improved boost response
Works with stock or aftermarket connecting rods

Specifications:

Raised compression ratio compared to stock
4340 taper bore Hard-chromed extra heavy duty pins
Teflon Coated Piston Skirts