Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
JEN SPEED SOLUTIONS FA20 | 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.
- New OE block
- New OE crank
- Manley H-beam rods w/ arp2000 hardware
- Closed deck conversion
- Bore for 86.5mm forged
- Wiseco pistons
- King main/rod bearings
DISCLAIMER: WARRANTY STIPULATIONS
- Follow proper break in procedures as provided with each short block.
- 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.
- Proof of maintenance w/specified oils is a must.
- 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.
- Customer will be required to ship short block at their own expense and coverage will be determined upon disassembly/inspection.
- 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.
- 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:
- 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
4.7 ★★★★★
Based on 263 reviews
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Product Reviews
★★★★★ 5
Excellent adjustable drafting chair
Size: 934-Z, Color: Blue
Excellent chair design, extremely comfortable and exceptionally easy instructions to follow making for simple assembly. Love the amply wide cushioned seat and ergonomic backrest. The height adjustment feature works perfectly as well as positioning of the foot ring . Having the ability to raise the arms is also a big plus! I highly recommend this product for attractive appearance, comfort features, functionality and operation. Really nice chair!
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Reviewed in the United States on April 13, 2026
★★★★★ 4
Comfortable, stylish, and perfect for long work hours 💗✨
Size: 934-Z, Color: Pink
I bought this chair because I spend a lot of time working and needed something comfortable but also stylish, and I absolutely love it.
Since I started using it, I feel much better support in my back thanks to the lumbar support. It makes a big difference, especially during long work hours. The adjustable footrest is also a feature I didn’t know I needed, but now I use it all the time.
The flip-up armrests are very convenient because I can adjust them depending on what I’m doing or move them out of the way when needed.
The pink color is beautiful and adds a soft, elegant touch to my workspace. It looks great in a modern home office.
It feels sturdy, well-made, and very stable. Overall, it’s a great purchase that improved both my comfort and the look of my workspace.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
All-around thumbs up!
Size: 934W-Z, Color: Black
So far, so awesome. Easy to assemble, comfortable, arrived quickly and is exactly what I was looking for. I have a tall work bench in my new studio so I needed a chair that we could allow me to sit higher than a regular office chair and allow me to get off my feet after standing on the concrete floor. Plus its a nice looking chair that I am sure will last a long time. I love the flip-up arms and the lumbar support. This is just right!
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Perfect Balance of Comfort, Support, and Style!
Size: 934-Z, Color: Black, Size: 934-Z, Color: Black
I’ve been using this chair for a few weeks now, and I’m genuinely impressed with how much of a difference it’s made in my workspace. The mesh back is one of my favorite features—it offers excellent breathability and prevents that sticky, overheated feeling you sometimes get with solid-back chairs, even after sitting for hours. The seat cushion is firm enough to give proper support but still has enough give to keep me comfortable through long workdays. It feels like the perfect middle ground between soft and supportive.
The adjustable foot ring has been a complete game changer for me. I use a taller desk setup, and having somewhere to rest my feet makes a huge difference in posture and overall comfort. Whether I’m sitting upright for focused work or leaning back to read, it’s always at the right height.
The flip-up armrests are another smart design choice. When I’m typing, I like to have them down for support, but when I’m done, I can flip them up and push the chair neatly under my desk—saving space and keeping things tidy. The casters roll smoothly on both hardwood and rugs, so I can move around easily without scraping the floor or getting stuck. The overall build quality feels solid and sturdy, with no wobbles or creaks.
Assembly was surprisingly quick—everything was clearly labeled, the parts felt durable, and it only took me about 20 minutes from opening the box to sitting in the chair. The sleek, modern look is another big plus—it blends in perfectly with my home office décor without feeling bulky or taking up too much visual space.
If you’re looking for a chair that combines comfort, ergonomic support, durability, and style, I can’t recommend this one enough. It’s equally great for work, studying, or just relaxing at your desk, and it’s definitely been worth every penny.
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Reviewed in the United States on August 12, 2025
★★★★★ 3
OK for the price, but overall comfort is avergae
Size: 934-Z, Color: Mustard
Easy to put together, color (mustard) accurate to images, and while I understand this is not a high-end chair, I feel like it still needs to be rated for its quality.
Pros: the seat cushions are fairly comfortable and it rolls well. Adjustable footrest is easy enough and mostly sturdy.
Cons: For a tall office chair, it doesn't go up high enough. I actually had to lower my standing desk to sit at it, which then isn't where I want it when I'm standing now. It's also a bit wobbly. The seat area's attachment to the post isn't as solid as it should be for a tall chair, so while sitting, it does tend to lean/slope forward and wobble side to side. The lumbar support is not adjustable, so I'm not even really sure what it does. And the armrests are not very comfortable to use. Since they are hard plastic, they are just a bit too rigid to rely on for any comfort. They are basically there to hold on to when you're getting out of the chair.
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Reviewed in the United States on May 29, 2026
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