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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Piston Set by JE - 87mm +.50mm Oversize Bore | 12.5:1 CR | Stock Stroke - 89.6mm - S52 BMWNOTE: 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. 425 Bore (mm) 87. Top Compression Ring Thickness 0. 0400 Second Compression Ring Thickness 0. 0480 Oil Ring Thickness 0. 111 Forging Type FSR Volume (cc) 5. 50 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) 3.425
Bore (mm) 87.
Top Compression Ring Thickness 0.0400
Second Compression Ring Thickness 0.0480
Oil Ring Thickness 0.111
Forging Type FSR
Volume (cc) -5.50
Series JE Pistons
Piston Head Type Inv Dome/Dish
Pin Diameter (IN) 0.866
Compression Height 1.220
Make BMW
Wrist Pin Style - floating or press fit Floating
Wall Type CHAMFERED
Wall Thickness (IN) 0.150
Ringset Part Number JG1001-3425
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 297175S
Replaced By 288993
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 297
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 0.030
Brand JE Pistons
OE Part #: 11-25-1-405-702 / 11 25 1 405 702 / 11251405702
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
4.8 ★★★★★
Based on 72 reviews
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Product Reviews
★★★★★ 5
Very NICE quality and worth the money!
Color: White, Size: 8 Panel
Ive gotten several folding privacy screens. This HALLYBEE one is a great 8 panel and the divider is TALLER than some other ones that I have gotten. Also the hinges fold in BOTH directions so you can fold the panels however you want. Some other screens only fold open in one direction like a Z. I thought that being a paper screen material that it would be less sturdy or too light, no this is not the case. The paper screen material looks fantastic and has lasted LONGER looking BETTER than the synthetic canvas webbing belt/leash fabric material on other screens - I just had to throw one of those out, but this one has been going strong and looks brand new still. Also this frame is taller and heavier and more sturdy. This screen is worth the money. I've gotten cheaper screens and they just fall apart so fast. Also because this divider is taller and wider, it is alot more privacy.
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Reviewed in the United States on January 6, 2026
★★★★★ 5
Perfect!
Color: Black, Size: 8 Panel
Amazing! Beautiful and sturdy
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Good price, fast delivery and good quality
Color: Dark Mocha, Size: 8 Panel, Color: Dark Mocha, Size: 8 Panel
This is honestly the best room divider. It can completely separate the room and create a nice private space. I love it!
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Reviewed in the United States on March 9, 2026
★★★★★ 4
Good room divider
Color: Dark Mocha, Size: 6 Panel
This room divider is sturdy and looks good. There were a few areas where the material was cracked, but overall it does its job. It’s not heavy and can easily be folded up and moved to a new area as needed.
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Great Quality and Very Tall
Color: Dark Mocha, Size: 8 Panel
This is absolutely excellent! It’s very tall and you can’t see over it and I love it. It’s 6ft tall. It’s of very good quality material and looks perfect as a room divider between roommates in a shared space. I’d buy this again for sure if needed.
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Reviewed in the United States on February 5, 2026