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RCM Head Stud Kit - 14/14mm Superstud (EJ20, EJ22, EJ25)
The latest evolution of our proven and hugely successful 14/14mm RCM Head Stud Kit designed for the ultimate in engine performance and reliability! Introducing the new RCM 14mm Superstud Head Stud Kit.
Our engineers have taken the ultimate EJ series head stud solution to the next level by incorporating some new features into the RCM 14mm Superstud kit to improve performance and ease of installation for your EJ engine.
FEATURES
- Huge increase in tensile strength and yield when compared with the OE head bolts.
- Massively increased clamping load for big bhp applications.
- Eliminates cylinder head lift at high levels of boost.
- Supplied with ARP high tensile nuts, washers, RCM assembly lube and installation guide.
- As used in RCM Gobstopper I + II Time Attack race cars.
- Made in the UK from high tensile aircraft grade S99 steel to WRC spec.
- Precision rolled threads for maximum strength.
TECHNICAL SPECIFICATIONS
- Cylinder head studs manufactured using "Aircraft Grade S99 High Tensile Steel" to WRC specification.
- Precision rolled threads.
- Cylinder head stud thread pitch (Block End): M14X2.
- Cylinder head stud thread pitch (Cylinder Head end): 9/16 - 18 UNF.
- Cylinder head stud length: 197mm.
INCLUDED IN THE KIT
- 12 x RCM 14mm head studs.
- 12 x ARP 9/16" 8740 Chromoly 12pt nut
- 12 x ARP 9/16" 8740 Chromoly washer
- 1 x Sachet of assembly lube and fitting guide for a comprehensive install.
$557.04
SKU
RCM2902
Founded in the early 1991 by multiple RAC winner and British Rally Champion Roger Clark MBE, Roger Clark Motorsport is one of the UK's (and for that matter, global rally's) premier motorsport and product development specialists and tuners. Roger Clark Motorsport specialize in the Impreza platform (the car-of-choice for their unparalleled Time Attack Cars Gobstopper I, Gobstopper II and soon Gobstopper III), and have passed on these high-performance components to the consumer market. We are incredibly proud to be one of the only U.S. distributors able to offer these exceptional Roger Clark Motorsports parts.
| Model | Fitment Confirmation |
|---|---|
| EJ205 | ✓ |
| EJ207 | ✓ |
| EJ22 | ✓ |
| EJ255 | ✓ |
| EJ257 | ✓ |
|
[ NOTE ] To allow the fitment of the RCM 14/14mm Head stud kit your engine block must be re-engineered to accept the larger studs used in this kit. Due to the increased diameter of the cylinder head stud machining is required to the cylinder heads. The original head bolt passages must be drilled out to a larger diameter in order for the 14mm stud to pass through. Non RCM manufactured head gaskets used alongside this kit will require slight modification using our tapered reamer tool (See part number RCM910). 4x RCM658 modified head location dowels are required when using this kit (Sold separately). |
|
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to P65Warnings
| SKU | RCM2902 |
|---|---|
| Brand | Roger Clark |
| Product Type | Engine |
| Engine | Engine Internals |
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