RCH-S120 V6 Heads Subaru EJ205 $3450

These 2.0L non-AVCS heads are built from new big-port JDM Ver.6 heads for excellent flow without the need for porting. Fitted with Supertech performance valves and valvetrain for heat resistance and high rpm durability. Sold outright, no core exchange required.

RCH-S225 COSWORTH Heads Subaru EJ257 MY04-06 $4240
RCH-S225C COSWORTH Heads Subaru EJ257 MY07 $4240
RCH-S225B COSWORTH Heads Subaru EJ257 MY08+ $4240
RCH-S24G COSWORTH Head Mitsubishi Evo 7-8 $4240
RCH-3852 COSWORTH Head Mitsubishi EVO 9 $4313
RCH-5685 COSWORTH Head Mitsubishi EVO 10 $4263

Cosworth cylinder heads are the direct result of the company's extensive research and development programs. Heads are ported on a 5-axis CNC machine, with precision cut multi-angle valve seats, 1.0mm oversized valves (inconel exhaust valve material), high rpm dual valvesprings, and lightweight titanium retainers. Preassembled and ready for installation. Sold outright, no core exchange necessary. Available fitted with cams and lifters for additional cost.
RCC-EJ20 COSWORTH Cam Set Subaru EJ205 $1044
RCC-EJ25 COSWORTH Cam Set Subaru AVCS (in) $1152
RCC-7395 COSWORTH Cam Set Subaru AVCS (dual) $1292
RCC-4G63 COSWORTH Cam Set Mitsubishi 4G63 $655
RCC-3921 COSWORTH Cam Set Mitsubishi EVO IX $693
RCH-4124 COSWORTH Cam Set Mitsubishi EVO X $784

Cosworth performance camshaft sets designed for strong power gains across the powerband. Recommended for use with heavy duty valve springs.

ARP-S4701 Subaru Head Stud Kit EJ20/EJ25 DOHC $195
ARP-M4702 Mitsubishi 4G63 $115

Cylinder head studs improve head gasket sealing and reduces distortion by providing more consistent clamping pressure compared to head bolts.

RST-0137 STi Timing Belt (all turbo models) $274
T328RB Gates Reinforced Timing Belt (turbo) $122

Kevlar reinforced timing belt ensures precise cam timing and reliability under extreme competition use. Belt is marked for easy installation. Gates offers a low cost alternative to the STI belt.

RCH-4264 Head Gasket Set EJ25 (1.1mm) $220
RCH-4264B Head Gasket Set EJ25 (0.78mm) $220
RCH-2145 Head Gasket Set EJ25 (1.5mm) $244

RCH-4261 Head Gasket Set EJ20 (1.1mm) $220
RCH-4261B Head Gasket Set EJ20 (0.78mm) $220

Cosworoth high performance head gaskets. Viton coated multi-layer steel construction now featuring die-cut construction and a special folded reinforcement around each combustion chamber for maximum sealing reliability.

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