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Cosworth CS600X Long Block Assembly 81mm Stroke Subaru WRX STI EJ25 US & Euro spec 07

  • Cosworth CS600X Long Block Assembly 81mm Stroke Subaru WRX STI EJ25 US & Euro spec 07
  Product Information
 $16,703.00  Sale:$16,285.43 
  Model: 20003489
  Reviews:   
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1.480.966.3040    Click for Live Support
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Cosworth CS600X Long Block Assembly 81mm Stroke w/ Big Valve Cylinder heads and KK3766 Camshafts- 81mm Billet Crankshaft Subaru WRX STI EJ25 US & Euro spec 07

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 Cosworths skilled craftsmen using the finest components from our 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 our Forged Pistons, motorsport grade Forged H Beam connecting rods along with our 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, we install a pair of our CNC machine port-bored Big Valve Cylinder heads with our proven S2 camshafts complete with valve lash set to our specifications. The cylinder heads are secured with our high performance 11mm steel studs and sealed with multi layer steel head gaskets. Finally, we install one of our 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.

- New Subaru EJ25 STI Engine case
- Cosworth 81mm Billet Crankshaft
- Cosworth Forged H-beam Connecting Rods
- Cosworth Forged Pistons 99.5mm (8.2:1)
- 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
- Valve lash set
- Cosworth high pressure oil
- Cam covers
- Cosworth serial number
Select Available Options Then Click
Vivid Racing Reviews:
TEXT_OF_5_STARS by Christian melchor
"I love the blow off valve!! But it's not making me very happy when I put it on when I take it on a very good run and when I change gears it sets off my check engine light. Why?"
TEXT_OF_5_STARS by Christian melchor
"I love the blow off valve!! But it's not making me very happy when I put it on when I take it on a very good run and when I change gears it sets off my check engine light. Why?"
TEXT_OF_5_STARS by Vincent
"Very good!"
TEXT_OF_5_STARS by Michael Kameisha
"Great experience. Daniel was great. Thank you."
TEXT_OF_5_STARS by Mohan Murugiah
"Hi, I recently purchased a couple of items from Vividracing . Arsha was my initial point of contact through one of the forums. I received great service from Arsha, quick replies and quotes. Pricing was very competitive. Shipping to Australia was very quick - less than 2 weeks from the time my order was placed. My only suggestion is with packaging, a plastic shrink wrap around the boxes would have been better. I received my items in the manufacturer's boxes that did not hold up very well ( one item was half out of the box as it had punched a hole right through). Thank you, Mohan"
   


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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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