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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
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4.2 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 3
Pros and cons listed below, you decide
Flavor Name: Peppermint, Size: 5.25 Ounce (Pack of 1)
II like the flavor (peppermint) and that is is a healthier option for tooth paste - BUT - the cap and tube needs redesigning. The cap is hard to screw on most of the time flying onto the counter or the floor and also easy to confuse which end to screw on if you're not paying attention as one end is to puncture the end of the tube to get the paste out and the other to cover the tube after use.
The tube is too hard to get all the product out and to roll because I believe it is made of metal instead of plastic which is good but not so good. This is already very expensive and you cannot get all the toothpaste out. The cons are why I gave the 3 stars otherwise this is a 5 star for me and my husband.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Peaceful Soul-lifting Read
Format: Hardcover
Pope Leo is my hero. These words back up my feelings. Highly recommend, even if you’re not Catholic. Heart and soul lifting. Peace Be with You.
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Reviewed in the United States on June 5, 2026
★★★★★ 5
Pope Leo XIV
Format: Hardcover
Some of the first reflections by Pope Leo XIV. He's becoming important as he continues to share the gospel message.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
A great read.
Format: Hardcover
Loved the book.
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Reviewed in the United States on March 29, 2026
★★★★★ 5
The Pope Preaches of Peace-Not Surprising
Format: Kindle
This collection of homilies were delivered before Pope Leo’s comments regarding the war in Iran. They reflect that he is, and should be, an advocate for world peace.
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Reviewed in the United States on April 20, 2026