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- USA
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
Piston Set By JE - 85mm +1mm Oversize Bore | 9.5:1 CR | Stock Stroke 89.6mm - BMW N54NOTE: Image shown not actual parts. JE Pistons is the leader in forged racing pistons. With 70 plus years of experience, in house forging, and industry leading technology, JE Pistons are designed to perform at the top levels of all forms of motorsports. Bore (in) 3. 346 Bore (mm) 85. Top Compression Ring Thickness 0. 0400 Second Compression Ring Thickness 0. 0480 Oil Ring Thickness 0. 111 Forging Type FSR Volume (cc) 22. 70 Series JE Pistons Piston
NOTE: Image shown not actual parts.JE Pistons is the leader in forged racing pistons. With 70-plus years of experience, in-house forging, and industry-leading technology, JE Pistons are designed to perform at the top levels of all forms of motorsports.
Bore (in) 3.346
Bore (mm) 85.
Top Compression Ring Thickness 0.0400
Second Compression Ring Thickness 0.0480
Oil Ring Thickness 0.111
Forging Type FSR
Volume (cc) -22.70
Series JE Pistons
Piston Head Type Inv Dome/Dish
Pin Diameter (IN) 0.866
Compression Height 1.244
Make BMW
Wrist Pin Style - floating or press fit Floating
Wall Type CHAMFERED
Wall Thickness (IN) 0.180
Ringset Part Number JG1001-3346
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 361360S
Piston Pin Inside Diameter 0.506
Piston Pin Material 5115 LOW CARBON STEEL, CASE HARDENED
Piston Material 2618
Piston Pin Length (IN) 2.250
Pin Offset No
Pin Brand JE Pistons
Pin Part Number 866-2250-18-51C
Pin Included Yes
Pin Diameter (mm) 22.00
Oil Rail Support Included No
Deck Clearance 0.000
Brand JE Pistons
OE Part # 11-25-7-577-581 / 11 25 7 577 581 / 11257577581
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
4.1 ★★★★★
Based on 904 reviews
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Product Reviews
★★★★★ 5
Great pillow for side sleepers!
Size: Standard 20"x28", Number of Items: 2
I bought these pillows at first because I wanted to try out the “coolness” of them (I live in a place with no AC). They’re definitely not cold, but they do a good job of regulating the heat on particularly hot/stuffy nights.
But my favorite thing about these by far is the support! I’m a side sleeper, and these are just the right amount of firm to tuck between your shoulder and neck that keeps your neck in a good position all night, while still soft and comfy for your head! I’ve been sleeping on them for about 2 months now and they have maintained their shape really well. Definitely recommend!
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Reviewed in the United States on July 5, 2022
★★★★★ 4
Great Pillow with Minor Inconvenience
Size: Body 20"x54", Number of Items: 1
When i got this pillow I wasn't sure if I was going to like it or not. It is not inherently lumpy like I thought it was going to be. It molds to you as you use it every night but resets as memory foam is meant to. My only issue with it is when it is packaged thru gold the pillow in half then roll it and vacuum seal it. Where that fold was there is a lot less fluff and no matter what I do I cannot seem to redistribute the fluff to even it out. Otherwise it's a great body pillow
Edit:
Still can't get the fold out if the pillow no matter what i do but I still really like the pillow. My mother just got the same one and she does not have any issues with the fold line. I am keeping my review as 4 stars but it really is an awesome pillow
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Reviewed in the United States on November 9, 2025
★★★★★ 5
I Sleep Hot and This Is The Only Pillow Ive Tried that Stays Cool!
Size: Queen 20"x30", Number of Items: 1
We have a closet full of pillows. I have tried a bunch from cheap to expensive, Sleep Number to Kohls. I sleep really hot, but I bought this pillow and it is crazy how cool it feels. If I get too warm and want it cooler I flip it over. I was doubtful but now Im sold. I winter in Arizona and Im buying one of these for out there as well. It's firm but fluffy soft. Great support for a side or back sleeper. Maintains its shape, the filling is cut up foam pieces of some sort but its super comfortable. I have not washed it as it had no foam odor, and I was able to use it right away. I definitely recommend this. Great pillow!
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Reviewed in the United States on August 1, 2025
★★★★★ 5
Forget the traditional big pregnancy pillows, get one of these!
Size: Body 20"x54", Number of Items: 1
I’m in the 2nd trimester of pregnancy and I’m having a hard time getting comfortable in bed or waking up without pain. I got a big U-Shaped pregnancy pillow but it was awful. It was fluffy, but offered 0 support and firmness. Also the stuffing made me so hot!
I decided to try this and I’m soooo glad I did! The memory foam means it actually has some support and firmness to it and it stays pretty cool. It is heavy, but it’s worth it. I put it between my legs and hug the pillow with a 2nd pillow behind my back for extra support. I can ACTUALLY sleep in my bed again! And I don’t wake up with pain and stiffness. Highly recommend if the traditional pregnancy pillow isn’t working for you.
Make sure you let the foam rise for 72hrs. Apparently there may be an odor after opening it, but I haven’t noticed anything or it already dissipated. (I also didn’t actually wait the 72hrs but had no issues)
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Reviewed in the United States on March 14, 2023
★★★★★ 3
Very soft and squishy vs supportive
Size: Queen 20"x30", Number of Items: 2
These have really nice cooling fabric on one side. The other is a soft cottony fabric. They are very squishy. Not firm at all. I prefer a thicker supportive pillow that doesn’t completely collapse when you lay your head on it. I chose to purchase additional gel infused memory foam shreds to add stuffing to the pillows. I used a five pound bag of the shreds between the four new pillows I bought. I wish that wasn’t necessary. I did end up with nice , cooling, supportive pillows in the end though.
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Reviewed in the United States on March 4, 2026
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