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Description
Piston Set by JE - 86.5mm Standard Bore | 9.0:1 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. 406 Bore (mm) 86. 5 Top Compression Ring Thickness 0. 0400 Second Compression Ring Thickness 0. 0480 Oil Ring Thickness 0. 111 Forging Type FSR Volume (cc) 25. 10 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) 3.406
Bore (mm) 86.5
Top Compression Ring Thickness 0.0400
Second Compression Ring Thickness 0.0480
Oil Ring Thickness 0.111
Forging Type FSR
Volume (cc) -25.10
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 JG1001-3405
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 297170S
Replaced By 288988
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 285
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
4.1 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Nice Case with clear top for 24 Watches
Color: Black
This is my second watch case and I am very happy with it. I like the glass so you can view the watches from the top. This one has a flip up latch which I also like because you can reach down and open the case with one hand. The pillows are a good size, not too big so they do not stretch out your watch bands. I specifically wanted a case to hold as many watches as possible and 24 is about the biggest I could find in this configuration, meaning a box and not some kind of cabinet which I do not have room for
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Reviewed in the United States on March 29, 2026
★★★★★ 1
Not good quality
Color: Black
No the quality is was expecting for the price just card board construction and plastic
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Reviewed in the United States on May 21, 2026
★★★★★ 5
24 Slot Watch Case
Color: Dark Brown
Great quality and durable watch case. The hinge on the lid gives it stronger support.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Sturdy and classy
Size: 12*3*2 Inches, Color: Black(2PCS)
I purchased these individual mesh dividers to replace solid plastic dividers for three reasons - cleaning ability, function , and. appearance. I am extremely happy with this choice on all accounts. I am very happy with the mesh as crumbs etc fall through the dividers which eliminates trying to clean all 4 tiny corners of each divider Simply remove the dividers, vacuum the crumbs, wipe the drawer with cleaner, and return the dividers. Because these are individual dividers, they can be configured to your specific need or choice. Both of these reasons are as expected. In addition, they are sturdy and do not bend or warp. But what surprised me the most is the difference using the black color makes! The appearance when the drawer is opened looks classy and high quality. So, so glad I didn’t get the solid wood dividers as again I’d be cleaning tiny corners with a Q-tip. I would buy these again.
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Reviewed in the United States on January 11, 2024
★★★★★ 5
Bought eons ago, still holding up.
Size: 9*3*2 Inches, Color: Grey(4PCS)
Easy to clean, sturdy, and there are little footies on the bottom (as long as you're not like me and accidentally wash them off). Fits well, works well, as we use them for sorting out utensils and keeping drawer gunk off of them.
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Reviewed in the United States on January 19, 2026