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Ferrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8-Z18, which provides high tensile strength. An exclusive two-step slow forging process ensures proper grain flow and virtually eliminates any damage to thematerial structure. The valves are then heat-treated and stress-relieved over a 48-hour period, which is the crucial base of our molecular integrity. These valves feature avionics-quality hard chrome along with a specially applied hard tip.

The Super Alloy Engine valves represent the highest level of sophistication in valve technology. These valves are designed to handle the extreme heat requirements and punishment of today’s Nitro Fuels, Supercharged, Turbocharged, Nitrous Oxide, and Marine race motors.

Ferrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8-Z18, which provides high tensile strength. An exclusive two-step slow forging process ensures proper grain flow and virtually eliminates any damage to thematerial structure. The valves are then heat-treated and stress-relieved over a 48-hour period, which is the crucial base of our molecular integrity. These valves feature avionics-quality hard chrome along with a specially applied hard tip.

ARP is a manufacturer of fasteners/bolts found in engines and drivelines, ranging from OEM replacement parts to specialty hardware for racing applications. ARP is the world leader in fastener technology.

Product detailed specification
Bore size	92.50mm
Stroke	79.00mm
Mahle Pistons compression ratio (CR)	8.0:1
OEM compression ratio (CR)	8.0:1
Dome volume (CC)	-16cc3
Compression height (CH)	30.30mm
Pin diameter	23mm
Features	4032 Alloy
Fits for	Subaru Impreza WRX STI - 2.0 16V (EJ20, EJ205, EJ207)

Bore size	100.00mm
Stroke	79.00mm
Mahle compression ratio (CR)	8.5:1 - 56cc cylinder head 9.1:1 - 50cc cylinder head
OEM compression ratio (CR)	8.0:1
Dome volume (CC)	-19.25cm3
Compression height (CH)	30.70mm
Pin diameter	23mm
Features	4032 material
Fits for	Subaru WRX STI 2.5 (EJ257)

Part number: FCPPASTR820085/4
Manufacturer: FCP Engineering
Forged high performance pistons for various applications in nearly all engine types for racing and street use.
Made of 4032-T6, piston skirt is molibden coated.
Each set of pistons also includes rings and HD series pins.
Bore size: 82.00mm
Compression ratio (CR): 8.5:1
Compression height: 29.00 mm
Pin diameter: 22mm
Stroke: 95.50mm with 236mm diesel engine block
VAG - 2.0 16V Turbo
Connecting rod length must 159mm

The Super Alloy Engine valves represent the highest level of sophistication in valve technology. These valves are designed to handle the extreme heat requirements and punishment of today’s Nitro Fuels, Supercharged, Turbocharged, Nitrous Oxide, and Marine race motors.