SKU: 4820791917

JE ULTRA SERIES -5cc FLAT TOP Pistons Set | 4.005" Bore x 4.00" Stroke x 6.125" Rod

Sale price$1030.50 Regular price$1145.00
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Description

JE ULTRA SERIES -5cc FLAT TOP Pistons Set | 4.005" Bore x 4.00" Stroke x 6.125" RodLSX Performance Parts proudly offer the biggest range in high performance pistons sets. JE Pistons have been setting the benchmark in performance & motorsport pistons set for decades & are the go to for those looking to achieve a specific goal with your LS build. Wether it be a mild street build OR an all out MAX effort race build, JE have a piston to exceed your expectations! JE Pistons Ultra Series pistons combine all of the best, most desirable

LSX Performance Parts proudly offer the biggest range in high performance pistons sets.
JE Pistons have been setting the benchmark in performance & motorsport pistons set for decades & are the go-to for those looking to achieve a specific goal with your LS build.
Wether it be a mild street build OR an all out MAX effort race build, JE have a piston to exceed your expectations!
JE Pistons Ultra Series pistons combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick-wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. They are ready for massive power and boost right out of the box!

Your New JE ULTRA SERIES Pistons Kit Includes
- 1 x Set of 8 4.005" JE ULTRA SERIES Flat Top Pistons;
- 3D milling on piston crowns & ready to install finish;
- Thermal Barrier Coated Crown;
- Premium wrist pins & roundwire locks included;
- Moly skirt coating for friction loss & skirt wear protection;
- Dedicated Forged Side Relief (FSR) forgings;
- Lightweight, extremely durable & machined for modern 1.5mm, 1.5mm, 3.0mm performance ring sets (RINGS NOT INCLUDED);

JE ULTRA SERIES Piston Specs
Bore 4.005"
Stroke 4.00"
Rod Length 6.125"
Forging type Forged Aluminum
Rings Pro Seal
Compression Height 1.115"
Wrist Pin Diameter .927"
Piston Material 2618 Alloy
Piston Style Flat Top with 2 x Valve Reliefs
Volume - 5cc
Ring Stack 1.5mm x 1.5mm x 3.0mm

Want To Chat To Us About Your New Pistons Set?
Sure! Give Us a Call on
(03)8595 4343
OR Simply click
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& schedule a time that best suits you. We will have one of our sales consultants contact you at your convenience.
Alternatively, We are available for Live Chat right now!

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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: 4820791917

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4.1 ★★★★★
Based on 17 reviews
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J
Verified Purchase
Jewels
Boise, US
★★★★★ 4
Design worthy
Size: 2' x 3' (Natural shape, Sheepksin, Oblong), Color: Ivory White
Good looking and thick and solid and comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 26, 2025
I
Verified Purchase
Ivysawrudy
Chelsea, US
★★★★★ 5
Great sheepskin seat covers
Color: Grey, Size: Front Seat Cushions-2 Pcs, Color: Grey, Size: Front Seat Cushions-2 Pcs
These are a perfect fit for my Mazda CX5 seats. I got the grey which compliments my interior and hopefully will not get as hot as black ones would. The shearling covers are plush without looking too hairy. They are real wool despite some reviewers opinions. (they feel like one of my sheep, only cleaner lol). The attachments work well. Just slip the plastic piece through the seat crack until it flips and holds. Mine also came with elastic straps and hooks to anchor the front but I can’t find a good place to hook them so I will not use them. The grippy backing keeps them in place just fine. These covers elevate the car interior and are super comfy. Very happy with my purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
H
Verified Purchase
Happy Kolache
Boise, US
★★★★★ 5
Seat Cover That Did Not Disappoint!
Color: Pearl, Size: Front Seat Cushion-1 Pc
So Soft. Good under-side grips. Didn't have time to 'properly' attach, so I just put the cover on top of the seat. That was about a week ago and it hasn't moved. Wonderfully cool and there's no more sticking to the seat in the heat. Worth the price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
B
Verified Purchase
Bea
San Leandro, US
★★★★★ 4
Good seat COVER, but not a seat cushion
Color: Grey, Size: Front Seat Cushion-1 Pc
First, it would be very helpful if the description/information did not use the word "cushion" as this implies some sort of padding in addition to the cover. The cover has a layered backing but there is no cushioning or padding like material. That said, it is a very nice sheepskin cover. It was well packed and the sheepskin material itself is soft. It is a good size and nice to sit on. However, I will return as I need some actual padding to make my very firm car seat more comfortable. My rating would have been 5 stars otherwise.
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Reviewed in the United States on May 29, 2024
D
Verified Purchase
D. Dawson
Cuba, US
★★★★★ 5
Nice comfort and warm seat cover
Color: Pearl, Size: Front Seat Cushion-1 Pc
Used when traveled to Florida and back (3,000+ miles). Nice comfort and fit onto my Honda CRV seat good. It has straps and clips to hold it in place and rubber backing to keep it from moving around. In the winter it warms you up quickly, added bonus not expected. The quality is good, not problems with piling, or coming apart.
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Reviewed in the United States on December 29, 2025

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