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Description
Ultra Series Piston Set By JE - 84mm Standard 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. 307 Bore (mm) 84. Top Compression Ring Thickness 0. 0400 Second Compression
NOTE: Image shown not actual partsJE’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) -21.30
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) 0.230
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 367877S
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 334
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 # 11-25-7-577-581 / 11 25 7 577 581 / 11257577581
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.8 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 4
Too lightweight and flimsy, but it does the job
Size: 72"W x 72"L (Pack of 1), Color: 1a. Clear
This shower liner works as expected, but it is a bit lightweight, and will drift around in the shower.
I will look at getting a more heavy duty one in the future. This one has the 3 magnets, and that isn't enough.
I would recommend getting one with double the magnets and a thicker plastic. I went cheap and regret it slightly, but at least these things are made to be disposable.
Other than that, the durability seems good, and it looks and feels like you would expect, but as stated, the plastic is flimsy and flutters around. Seems fairly mold resistant vs other liners I've used from the store (like cheaper Walmart ones etc).
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Reviewed in the United States on March 8, 2026
★★★★★ 5
Simple Shower Liner That Works Well
Color: 1a. Clear, Size: 72"W x 72"L (Pack of 1)
This clear shower curtain liner does exactly what it’s supposed to do. The material feels flexible without being overly thin or flimsy, and it hangs nicely once installed.
The three magnets at the bottom help keep the liner in place and reduce the amount of movement while showering, especially in tubs with metal sides. The reinforced top holes also seem durable enough to handle regular opening and closing without tearing.
The clear design keeps the bathroom feeling brighter and more open compared to opaque liners. It’s easy to wipe down and clean as needed.
Overall, this is a solid basic shower liner with good durability and useful magnetic weighting.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Perfect one!
Color: 1a. Clear, Size: 72"W x 72"L (Pack of 1)
Awesome shower liner for a great price! This one is sturdy, washable, hangs nice, and easy to use. I like mine to be clear, so this one was perfect for me. It lets a lot of the bathroom light in. The clear color works for me. It has magnets at the bottom and does not blow in so much while you are showering. You can replace whenever you want or even wash it. The price is great, so it is up to you. Good purchase!
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Great quality for an even better price!
Color: 1a. Clear, Size: 72"W x 72"L (Pack of 1)
Was in need of a new one and this came quick and was super adorable. Great quality for the price, easy to use, water resistant, and easy to wipe/wash. Good thickness to it.
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Reviewed in the United States on May 14, 2026
★★★★★ 4
Durable curtain liner!
Color: 1a. Clear, Size: 72"W x 72"L (Pack of 1)
Very good quality with magnets at the bottom. I would recommend highly
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Reviewed in the United States on May 27, 2026