Roger Clark Motorsport - EXTREME High Performance 11mm Head Studs - WRX/STi EJ2.0/2.5L
RCM

Roger Clark Motorsport - EXTREME High Performance 11mm Head Studs - WRX/STi EJ2.0/2.5L

In the rangePart no. RCM1540

Fitment not listed

The supplier does not state which cars this fits, and we would rather say so than guess. Ask us with your car and we will check before you order.

Stud size
11mm
Material
S99 steel (aircraft grade)
Tensile strength
237,000+ psi (1640MPa)
Category
Engine & forced induction
All 8 specifications ↓

Want this, or something like it?

We can’t take an order yet — supply is still being arranged. Ask, and we will tell you what we know about it and let you know when it is available. What people ask for is what we range first.

  • Fitment is confirmed, not guessed

    A chassis is listed only where the part is on one of our cars or on the manufacturer’s own application list.

  • Some of this is on our cars

    Parts marked On our cars are ones we race. Those descriptions are written from running them, not from a brochure.

  • A person answers

    Enquiries go to Michael, who races the cars. Tell us the car and what you are trying to fix.

Not a shop yet — no prices and no checkout. How this catalogue works

Specifications

Brand
RCM
Part number
RCM1540
Stud size
11mm
Material
S99 steel (aircraft grade)
Tensile strength
237,000+ psi (1640MPa)
Rated to
450 bhp
In the box
12x head studs (11mm), 12x heat-treated nuts & washers, 1x moly grease
Category
Engine & forced induction

Figures as published for this part; fitment is only what we have confirmed. Check critical dimensions against your car before ordering.

About this part

Roger Clark Motorsport's Extreme High Performance head stud (RCM1540) is an 11mm S99 aircraft-grade steel stud for the WRX/STI EJ2.0/2.5L, rated to 450 bhp with a tensile strength of 237,000+ psi (1640MPa). The kit includes 12 head studs, 12 heat-treated nuts and washers, and a tube of moly grease.

We have not run this part ourselves — the ones we have are marked on our cars.