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Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
Ultra Series Piston Set By JE - 84mm Standard Bore | 9.5:1 CR | Stock Stroke 89.6mm - BMW N55/S55NOTE: Image shown not actual parts. JEs Ultra Series pistons for sport compact and euro applications 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. Premium, gas nitrided carbon steel rings are included Bore (in) 3. 307 Bore (mm) 84. Top Compression Ring Thickness 0. 0400 Second Compression
NOTE: Image shown not actual parts.JE’s Ultra Series pistons for sport compact and euro applications 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. Premium, gas-nitrided carbon steel rings are included
Bore (in) 3.307
Bore (mm) 84.
Top Compression Ring Thickness 0.0400
Second Compression Ring Thickness 0.0480
Oil Ring Thickness 0.111
Forging Type FSR
Volume (cc) -14.70
Series JE Ultra Series
Piston Head Type Inv Dome/Dish
Pin Diameter (IN) 0.866
Compression Height 1.275
Make BMW
Wrist Pin Style - floating or press fit Floating
Wall Type CHAMFERED
Wall Thickness (IN) 0.230
Ringset Part Number JG1001-3307
Ring Brand ProSeal
Ringset Included Yes
Retainer Thickness 0.063
Retainer Lock Style Wire Lock
Retainer Lock Part Number 866-063-MW
Retainer Diameter (IN) 0.866
Replacement Single Piston 367879S
Piston Pin Inside Diameter 0.406
Piston Pin Material 9310 NICKEL CARBON STEEL ALLOY
Piston Material 2618
Piston Pin Length (IN) 2.250
Piston Avg Wt 337
Pin Offset Yes
Pin Brand JE Pistons
Pin Part Number 866-2250-23-93C
Pin Included Yes
Pin Diameter (mm) 22.00
Oil Rail Support Included No
Deck Clearance 0.000
Brand JE Pistons
OE Part #'s:
11-25-8-619-196 / 11 25 8 619 196 / 11258619196
11-25-7-645-958 / 11 25 7 645 958 / 11257645958
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
4.3 ★★★★★
Based on 1899 reviews
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Product Reviews
★★★★★ 5
LUXURIOUS, just like it says
Color: White, Size: Queen (Pack of 2)
I used My Pillows for years which needed constant fluffing throughout the night until they just became useless. Since they became useless, I would always wake in the middle of the night with terrible headaches and my head would be sore all over, throbbing like a boil. I couldn’t stand anything to touch my any part of my head while these headaches occurred. One night almost a week ago I was awake in pain and couldn’t sleep. I started googling for a solution, a pillow that would support a human head, basically a bowling ball. After several products which kept sending me to Amazon, I stumbled upon this pillow. I read all of the reviews. Many compared it to a “luxurious hotel pillow”. So I waited and got them within less than 48 hours. It was a thin box so I wasn’t expecting much. They were vacuum sealed, I opened them and allowed about an hour for them to fully expand. They were comprised of memory foam and down alternative like “luxurious hotel pillows”. They were heavy too. I tried to fluff it for maximum feel. It was extremely firm and I wasn’t able to actually fluff or reform it in any manner really. I could feel the down alternative filling surrounding this semi hard center ( the memory foam I guess) and I fluffed as much as possible. I had difficulty getting it into my pillow case, which was fine to me. It just made me anticipate this perfect looking pillow. I had been suffering with these headaches due to inferior pillows, I couldn’t wait. I laid down and put my bowling ball head on it! It completely supported my head. I normally like my pillow to conform around my neck and shoulders to allow a straight alignment with my head. My head was slightly up, but hey this felt great!!! I could feel the down alternative filler cushioning my head with the firm memory foam in the middle. I could not wait to try it that night. Night comes and I’m excited to see if I can sleep through the night finally without waking with those terrible headaches. I slept almost all through the night except for going to the bathroom once!! And my head wasn’t hurting nor did it feel like a boil!! I was ecstatic to say the least. I know there are people just like me searching for relief. If you can tolerate a firm pillow you can’t go wrong with these pillows. You get two for a great price! I just wish I hadn’t wasted hundreds on My Pillows for all my bedrooms a few months ago. I will be replacing all the pillows in my home with these WONDERFUL pillows!!!
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Reviewed in the United States on March 13, 2025
★★★★★ 5
Awesome Pillow!!!
Size: Queen, Number of Items: 1
This pillow is Amazing!!! So Great to sleep on. I finally can get a good night's sleep!!! Its very soft and comfortable. I also haven’t gotten up with a stiff neck in the morning either!!!
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Love them!!
Size: Queen, Number of Items: 2, Size: Queen, Number of Items: 2
Ok I normally don't leave reviews but I had to on this pillow. I was looking forever for a pillow and was nervous about buying one because you know how that usually goes when it comes to buying pillows. They arrived compressed but when you unwrap them they blow up to be a heavy duty pillow. Firm but not too firm. I don't like super soft pillows that you can roll up in a ball with one hand, I like a pillow that gives support and these do just that. They are cooling as well they are pretty for a pillow with the unique design. If you are in the market for a pillow and reading this THEN BUY THIS PILLOW & come back to tell me thank you. I promise you will NOT be disappointed. No I didn't get paid to say any of this. I wanted to give a honest review where it deserves one! You will not be disappointed! Thanks for the fast over night shipping as well. Not to mention the pricing is on point. I can say right now you will not find 2 pillows of this quality & price.
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Perfect pillows
Size: Queen, Number of Items: 2
Soft, but durable. Comfortable and cool during sleep.
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Reviewed in the United States on May 17, 2026
★★★★★ 4
Best pillow I’ve ever tried—hands down!
Size: Queen, Number of Items: 2
I’ve gone through a bunch of pillows over the years, but this BETU Cooling Pillow is by far the best one I’ve ever used. I sleep in literally every position—on my back, stomach, and sides—and this pillow works perfectly no matter how I’m laying.
It really does have a cooling effect, which I love as a hot sleeper. Just make sure your room is cool too, and it makes a big difference. It came vacuum-packed, but it fully expanded within just a few hours. I was able to sleep on it the same day it arrived, and it was super comfy right from the start.
I also washed and dried the pillowcase before using it, and it came out looking and feeling great—no shrinking or damage at all. Honestly, I look forward to going to bed every night now just because of this pillow. It’s supportive, comfortable, and totally worth it!
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Reviewed in the United States on February 21, 2026
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