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Description
Ultra Series Piston Set By JE - 84.5mm +.50mm Oversize Bore | 9.5:1 CR | Stock Stroke 89.6mm - BMW N54NOTE: 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. 327 Bore (mm) 84. 5 Top Compression Ring Thickness 0. 0400 Second
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) 3.327
Bore (mm) 84.5
Top Compression Ring Thickness 0.0400
Second Compression Ring Thickness 0.0480
Oil Ring Thickness 0.111
Forging Type FSR
Volume (cc) -22.00
Series JE Ultra Series
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) 0.150
Ringset Part Number JG1001-3327
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 367878S
Piston Pin Inside Diameter 0.566
Piston Pin Material 5115 LOW CARBON STEEL, CASE HARDENED
Piston Material 2618
Piston Pin Length (IN) 2.250
Piston Avg Wt 337
Pin Offset Yes
Pin Brand JE Pistons
Pin Part Number 866-2250-15-51C
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.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.8 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 4
Ok but not great
Style: 100-Pk, Size: 6-Inch
Not the thickness I would have expected for the price but do seem to work ok. Very hard to find good quality dessert plates at an affordable price. Probably won’t buy again.
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Reviewed in the United States on December 4, 2025
★★★★★ 5
Would not use these for food; very thin and not sturdy
Style: 100-Pk, Size: 6-Inch
Great for targets on the range
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Reviewed in the United States on March 27, 2026
★★★★★ 3
Handy Size, But Flimsy & Not Leak-Proof
Style: 100-Pk, Size: 6-Inch
I actually use these for my cat’s wet food, and while the size is perfect for that, they do have some downsides.
What I liked:
Great small size for snacks, desserts, or pet food
Convenient and disposable
Comes in bulk, which is helpful
What could be better:
Tends to leak through with wet food
Plates are somewhat flimsy
They stick together, which makes them a little annoying to separate
They work fine for lighter or dry items, but with anything moist, you’ll want to be careful or maybe double them up. For my use, they get the job done, just not perfectly.
Who this is great for:
Light snacks, desserts, or dry foods
Quick, disposable use
Pet owners for dry food or short-term use
Value:
Decent for bulk plates, but the quality limits how versatile they are.
Final Verdict:
Convenient and the right size, but the flimsiness and leaking are something to keep in mind. Best for lighter use.
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Reviewed in the United States on March 25, 2026
★★★★★ 1
Flimsy and thin and soaks through
Style: 300-Pk, Size: 6-Inch
So flimsy. That they stick together and you use 2 or three at a time. And if you don’t then anything soaks through them in short order.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Small paper plates
Style: 100-Pk, Size: 6-Inch
Nice weight don’t leak
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Reviewed in the United States on April 2, 2026