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Ships within 48 hours · Estimated delivery Aug 26 - Aug 31
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Description
Piston Set by JE - 77mm Standard Bore | 8.3:1 CR | Stroke 85.8mm - MINI Cooper S 2002-2008NOTE: 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. 031 Bore (mm) 77. Top Compression Ring Thickness 0. 0400 Second Compression Ring Thickness 0. 0480 Oil Ring Thickness 0. 141 Forging Type Round Volume (cc) 1. 00 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) 3.031
Bore (mm) 77.
Top Compression Ring Thickness 0.0400
Second Compression Ring Thickness 0.0480
Oil Ring Thickness 0.141
Forging Type Round
Volume (cc) -1.00
Series JE Pistons
Piston Head Type Inv Dome/Dish
Pin Diameter (IN) 0.827
Compression Height 1.043
Make MINI
Wrist Pin Style - floating or press fit Floating
Wall Type CHAMFERED
Wall Thickness (IN) 0.150
Ringset Part Number XC7700
Ring Brand ProSeal
Ringset Included Yes
Retainer Thickness 0.063
Retainer Lock Style Wire Lock
Retainer Lock Part Number 827-063-MW
Retainer Diameter (IN) 0.827
Replacement Single Piston 312423S
Piston Pin Inside Diameter 0.527
Piston Pin Material 5115 LOW CARBON STEEL, CASE HARDENED
Piston Material 2618
Piston Pin Length (IN) 2.250
Piston Avg Wt 238
Pin Offset No
Pin Brand JE Pistons
Pin Part Number 827-2250-15-51C
Pin Included Yes
Pin Diameter (mm) 21.00
Oil Rail Support Part Number (If Required) 3040-122
Oil Rail Support Included Yes
Oil Rail Radial Wall 0.122
Deck Clearance -0.110
Brand JE Pistons
OE Part # 11-25-7-520-131 / 11 25 7 520 131 / 11257520131
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) 3.031
Bore (mm) 77.
Top Compression Ring Thickness 0.0400
Second Compression Ring Thickness 0.0480
Oil Ring Thickness 0.141
Forging Type Round
Volume (cc) -1.00
Series JE Pistons
Piston Head Type Inv Dome/Dish
Pin Diameter (IN) 0.827
Compression Height 1.043
Make MINI
Wrist Pin Style - floating or press fit Floating
Wall Type CHAMFERED
Wall Thickness (IN) 0.150
Ringset Part Number XC7700
Ring Brand ProSeal
Ringset Included Yes
Retainer Thickness 0.063
Retainer Lock Style Wire Lock
Retainer Lock Part Number 827-063-MW
Retainer Diameter (IN) 0.827
Replacement Single Piston 312423S
Piston Pin Inside Diameter 0.527
Piston Pin Material 5115 LOW CARBON STEEL, CASE HARDENED
Piston Material 2618
Piston Pin Length (IN) 2.250
Piston Avg Wt 238
Pin Offset No
Pin Brand JE Pistons
Pin Part Number 827-2250-15-51C
Pin Included Yes
Pin Diameter (mm) 21.00
Oil Rail Support Part Number (If Required) 3040-122
Oil Rail Support Included Yes
Oil Rail Radial Wall 0.122
Deck Clearance -0.110
Brand JE Pistons
OE Part # 11-25-7-520-131 / 11 25 7 520 131 / 11257520131
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
4.5 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Soft and no more break out rashes
Size: Size 5 (84 Count), Color: Wingin' It + Catching Rainbows
Love these diapers! My fourth baby would keep breaking out and no matter what creams we tried it would not get better until we made the switch and it was instant relief and no more bumps. Baby was a lot happier as well! Give them a try you won’t regret it.
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Reviewed in the United States on May 8, 2026
★★★★★ 2
They fit small and waistband doesn’t secure
Size: Size 4 (104 Count), Color: Wild Thang + All the Alpacas
I love the prints and I love that they are unscented. We haven’t had any issues with irritation. I have used the wipes from this brand too, and they are awesome.
However, these diapers fit pretty small (inaccurate from the weight chart) and are pretty short. They don’t work for long, chunky babies. I wish they would fix the waist band because there needs to be an extra place for the sides to secure onto. The diaper moves really easy (especially the waist band in the front) and we have had several leaks and blowouts. I also think there should be a blowout barrier in the back.
I love the idea, I just think there needs to be some small tweaks to make these worth the price because they are pretty expensive.
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Reviewed in the United States on March 9, 2026
★★★★★ 4
Best diaper for my family
Size: Size 3 (120 Count), Color: Space Travel + It's a Pawty
I really like theses for my son, they are easy to put on, they hold through the entire night of him peeing(8pm-6am) they are really soft and good quality. The only complaint I have is that my son is able to take off the tabs and he pees through his clothes but I think that’s more of a him issue. But really good value and they are clean and perfect for kinda crunchy moms as i decided on this brand when reading the ingredients in pampers, Huggies, ect. these work the best for my family . Plus they have really cute prints
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Reviewed in the United States on June 15, 2025
★★★★★ 5
Great Quality Compared to Luxury Brands
Size: Size 3 (120 Count), Color: Just Peachy + Flower Power
We've been using Honest diapers for a few months now. We love the structure and design of the diapers - they feel like great quality for the price, especially when comparing to other more luxury diapers on the market. My daughter LOVES the designs, also, so that's a huge plus.
So far we haven't had any blow outs... fingers crossed it stays that way! She's able to sleep in them all night without needing a change (usually 11-11.5 hours) and the diaper stays intact with no leaking, etc. They aren't super thick so it makes it easy to put her in cute outfits. My girl is petite, so I do feel like the diaper is really high up her back but that doesn't seem to bother her any.
Overall, as long as she's happy and we're all sleeping well, I'm happy!
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Reviewed in the United States on December 21, 2025
★★★★★ 5
best tanning lotion
Scent: New Vanilla Pineapple, Size: 18 Fl Oz (Pack of 1)
this lotion not only smells good , but the tan you get from it is so different than others ! Tanning with this will give you remarkable complexion .
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Reviewed in the United States on February 25, 2026