SKU: 78458042983

JEN SPEED SOLUTIONS EJ25 | 600BHP

Sale price$3791.68 Regular price$4212.98
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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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Description

JEN SPEED SOLUTIONS EJ25 | 600BHPMADE TO ORDER ETA 4 8 WEEKS FROM THE DATE OF PURCHASE! TOP OF THE SHELF CUSTOM, NO MARKETING SCHEME, THE BLOCK IS BUILT TO SPECIFICATION UNLESS THE BUYER WILL REQUEST SOME CHANGES. WE CAN DO EJ OR FA PLATFORM! THESE BLOCKS ARE GOING SPECIAL ORDER AND CUSTOM MADE ON THE OWNERS WANTING THERE IS NO NEED OF "CERTIFIED INSTALLER" TO INSTALL YOUR OWN BLOCK! WE BELIEVE THAT AS A CAR ENTHUSIAST THAT YOU WILL HAVE 100% FREEDOM TO DO WHATEVER WITH YOUR OWN

MADE TO ORDER

ETA 4-8 WEEKS FROM THE DATE OF PURCHASE!

 

TOP OF THE SHELF CUSTOM, NO MARKETING SCHEME, THE BLOCK IS BUILT TO SPECIFICATION UNLESS THE BUYER WILL REQUEST SOME CHANGES. WE CAN DO EJ OR FA PLATFORM!

 

THESE BLOCKS ARE GOING SPECIAL ORDER AND CUSTOM MADE ON THE OWNERS WANTING

 

THERE IS NO NEED OF "CERTIFIED INSTALLER" TO INSTALL YOUR OWN BLOCK!

 

WE BELIEVE THAT AS A CAR ENTHUSIAST THAT YOU WILL HAVE 100% FREEDOM TO DO WHATEVER WITH YOUR OWN BLOCK. GO TO A SHOP THAT WILL SAVE YOU MONEY THAT CAN INSTALL YOUR BLOCK, OR INSTALL ON YOUR OWN. THE BLOCK WILL BE 100% YOURS, SO NO ONE SHOULD BE TELLING YOU WHAT DO WITH IT.

 

THERE WILL BE SOME WHO WILL SAY IT IS EXPENSIVE. YES IT IS!, BUT NOTHING IS CHEAP WHEN YOU'RE TRYING TO BUILD IT RIGHT. HIGH QUALITY, AND HOLY GRAIL BLOCKS.

 

PNP sort of procedure for this block. No click on add-ons we make it simple and flexible for our clients.

 

We can do everything as per customer request ETA of the product that will be finally delivered will be 4-8 weeks from the date of purchase.

 

  1. EJ25 list for 600BHP
  2. New OEM RA block converted to 14mm head studs,
  3. Closed deck and bored to match +0.25mm forged Wiseco pistons.
  4. New OEM nitrided Subaru crankshaft
  5. New Manley forged turbo tuff I-beam connecting rods with upgraded 625+ ARP rod bolts
  6. New King main and rod bearings.

 

DISCLAIMER: WARRANTY STIPULATIONS

 

  1. Follow proper break in procedures as provided with each short block.

 

  1. Professional base tune for break in and follow up tune post break in with receipts. I do not recommend e-tunes or street tunes by your buddy. It's very obvious when a tune causes engine failures. Please use a reputable tuner with a dyno.

 

  1. Proof of maintenance w/specified oils is a must.

 

  1. Warranty will not be covered by accidents or any other failures caused by components outside of the short block to include oil contamination/starvation, skipped timing etc.
  2. Customer will be required to ship short block at their own expense and coverage will be determined upon disassembly/inspection.

 

  1. Any short block built for 800+hp should not be used as a daily/street engine. They will need periodic teardowns and refreshing/rebuild. These will not be warrantable repairs.

 

  1. DISCOUNTED PRICE FOR MEMBERS WITH JEN SPEED SOLUTIONS (COMPANY) BANNERS

 


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 78458042983

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Mariel
Omaha, US
★★★★★ 5
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Reviewed in the United States on May 17, 2026
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Finngirl
Birmingham, US
★★★★★ 5
Good quality, smooth feel
I got these briefs so recently that have washed just one pair so far. First off, these are very comfortable, the material is soft & bordering silky, good quality sewing. Wash well and minimal if any shrinkage. They do come a bit wrinkled from the dryer but hey, these are underwear and will go on smoothly. If it were a t-shirt, I would look sloppy. I feel the sizing is accurate. No rolling and these don't announce themselves under clothing. Planning on getting more of these boxers and replacing my old panties.
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Reviewed in the United States on January 31, 2026
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Skurtzo
Battle Creek, US
★★★★★ 4
A little snug on the thighs
Size: Medium, Color: Multicoloured G (5-pack)
Super comfy, soft and thin. For reference, I'm 5'6", 135, athletic build. I bought medium. I almost returned them because I thought they were a bit too snug on my thighs, and my thighs are not large at all. I was concerned about panty lines under snug clothing. But, because they're thin, I figured they would probably stretch, so I kept them. So far, I've only worn them under a night shirt, but they're super comfortable and they dont ride up at all. Very nice, but if your thighs are a little thick, you probably won't like them.
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Reviewed in the United States on August 29, 2025
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Shanna
Bozeman, US
★★★★★ 5
Functional + Sexy
Size: Small, Color: Multicoloured E-(5-pack), Size: Small, Color: Multicoloured E-(5-pack)
Not only do these feel good, my husband can’t keep his hands off me. They fit so good and are soft. I change into these to sleep but also just use them as shorts to wear around the house. They’re comfortable and don’t slide around. I got a size small and I’m 100lbs.
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Reviewed in the United States on April 13, 2026
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ClairY
Phoenix, US
★★★★★ 5
Finally!
Size: X-Large, Color: All Black D (5-pack)
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