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ARP Head Stud Kit Subaru WRX STI DOHC 02-12

  • ARP Head Stud Kit Subaru WRX STI DOHC 02-12
  Product Information
 $372.87  Sale:$216.26 
  Brand: ARP Bolts
  Model: 260-4701
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Product Information
ARP Head Stud Kit Subaru WRX STI DOHC 02+

It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there«¸_s not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Then, each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.

Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It«¸_s important to note that lesser quality studs are not even centerless ground - the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned - something that won«¸_t happen with inferior quality head studs.

ARP studs are thread rolled after heat-treat, which gives them about 1000% (that«¸_s ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it«¸_s tough on tooling, but the results are well worth the extra effort. You will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the "stretch" of both studs, which makes for a more consistent clamping force - and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!

Premium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications. You won«¸_t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality. Clearly, they are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.

12-Point Nuts - U/C Studs
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Vivid Racing Customer Reviews:
TEXT_OF_5_STARS Posted on 08/03/2012 by Nikolas Matos
"Team, I am still waiting to settle my claim reference invoice 118320. As you already know I replaced rotor with another STOP TECH rotor I had purchase from your team and resolved the noise coming from applying brakes... Long story short, I need for you to credit me with expenses as I already return rotor. I am a service member and very little time to deal with this issue. I would very much appreciate your help in the matter. r/ Matos, N."
TEXT_OF_5_STARS Posted on 02/23/2014 by ricardo
"Very nice exhaust with good fittment very loud"
TEXT_OF_5_STARS Posted on 12/22/2014 by BizRate Customer
"Great place to order from John at ext 243 was very helpful never failed to either call or email me back about every detail and all parts showed up very quick and will definitely do more business with thm"
TEXT_OF_5_STARS Posted on 01/19/2015 by chattmanlan
"generally speaking, good experience. but shipping cost is high."
TEXT_OF_5_STARS Posted on 02/19/2015 by Ammon
"This is by far the best rear diffuser for the 2005-2009 Mustang. It is high quality and the carbon fiber looks super clean. Vivid was super easy to deal with over the phone and had APR drop ship the diffuser directly to me, saving me a handful of cash!"

ARP Head Stud Kit Subaru WRX STI DOHC 02-12
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About Manufacturer: ARP Bolts
ARP is the one company you need in your vehicles engine when building something for high horsepower. The ARP head studs, rod bolts, and main studs are some of the most popular engine components upgraded. ARPā€™s product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications.

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