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Shane Martin says: The problem is i have to make the hole for the Aerial . Thought it came ready to install Produc-t looks great though. ..
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David Marshall says: I bot these "dogbones&-quot; for my 996TT to tighten the car up a bit. They're a high quality product and have had zero issues. I drive my car mostly on the street, but I still think they're worth the effor ..
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HUSAM @ MC Performance says: I have bought this clutch from Dan at Vivid Racing a year a go for a customer for mine to install on a 996 GT2 that puts 730Whp on pump gas. i personally drove the car around and i can tell you that o ..
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Cosworth Long Block Big Valve Cylinder Heads KK3920 Camshafts STD Crankshaft 9.2:1 CR Subaru EJ25 2.5L 04-06
  Product Information
Price: $12,607.00   Sale: $11,787.55
  Model: 20007707
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Product Information
Cosworth Long Block Big Valve Cylinder Heads KK3920 Camshafts STD Crankshaft 9.2:1 CR Subaru EJ25 2.5L 04-06

After several years of testing and development, the Cosworth CS600 series High Performance Subaru EJ25 long block has arrived. The CS600 series is designed for extreme track day use and the demanding performance enthusiast. Each assembly is precision built by one of Cosworth's skilled craftsmen using the finest components from their parts catalog to ensure maximum reliable power and performance. Starting with a new Subaru EJ257 semi closed deck block, we meticulously hone each bore to guarantee perfect piston to cylinder wall clearance. The block is then assembled with Cosworth’s Forged Pistons, motor sport grade Forged H Beam connecting rods along with high performance rod and main bearings and a new STI Forged crankshaft. For maximum performance, an optional steel billet crank is available (CS600X). Once the cylinder block assembly is completed, they install a pair of CNC machine port-bored Big Valve Cylinder heads with their proven S2 camshafts complete with valve lash set to our specifications. The cylinder heads are secured with high performance 11mm steel studs and sealed with multi layer steel head gaskets. Finally, Cosworth installs one of their blue-printed, high pressure oil pumps for maximum lubrication. This proven engine combination has been used by top teams to win events in both North America and Europe and is available now for general sale.

Features:
  • New Subaru EJ25 STI Engine case
  • Cosworth 79mm or 81mm Billet Crankshaft
  • Cosworth Forged H-beam Connecting Rods
  • Cosworth Forged Pistons and rings
  • Cosworth motorsport Tri-metal bearings
  • Balanced to within .5 gram
  • Complete blue-print assembly
  • Enlarged Intake and Exhaust ports
  • Large diameter stainless steel intake valves
  • Large diameter Inconel exhaust valves
  • Hi Rev Dual valve springs
  • Titanium Retainers
  • Hardened Steel spring platforms
  • Multi angle valve job
  • CNC Machined port finish
  • Knife edge port divider
  • Cosworth S2 High lift camshafts - KK3766
  • Valve lash set
  • Cosworth high pressure oil pump
  • Cam covers
  • Cosworth serial number
  • Select Available Options Then Click


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    About Manufacturer: Cosworth
    Over the last 50 years Cosworth have developed an in-depth knowledge of engines, electronics and a range of high performance technologies. This has been used to supply some of the most successful motor sport teams and vehicle manufacturers in history.

    Our unprecedented success has fueled customer demand globally from diverse market sectors designing and developing technologies and components for aerospace, automotive, defense and sport applications.


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