SKU: 64961133296

Piston Set by JE - 77.50mm +.50mm Oversize Bore | 8.3:1 CR | Stroke 85.8mm - MINI Cooper S 2002-2008

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Description

Piston Set by JE - 77.50mm +.50mm Oversize 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. 051 Bore (mm) 77. 5 Top Compression Ring Thickness 0. 0480 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) 3.051
Bore (mm) 77.5
Top Compression Ring Thickness 0.0480
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 JG0004-3051
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 312425S
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 243
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) 3070-122
Oil Rail Support Included Yes
Oil Rail Radial Wall 0.122
Deck Clearance -0.110
Brand JE Pistons


OE Part # for standard sized piston:

11-25-7-520-131 / 11 25 7 520 131 / 11257520131

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Exchange/Return Notes
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SKU: 64961133296

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Diana gutierrez
Birmingham, US
★★★★★ 5
Buen tamaño y calidad
Buen tamaño y calidad, llego muy rapido
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Reviewed in the United States on May 4, 2026
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Hummingbird
New York, US
★★★★★ 5
Larger than chapst
Its larger than the normal chap stick that you're accustomed too. Goes on very smooth , it has a creamy texture to it.
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Reviewed in the United States on March 22, 2026
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Jane B
Waukegan, US
★★★★★ 4
Black stuff in tube and in balm
I bought in January and the tube has black stuff in the tube and in balm.
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Reviewed in the United States on April 11, 2026
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TexasGigi
Boise, US
★★★★★ 5
Wow! So moisturizing!
OMGosh, this feels so good on your lips! I just got this today so I’ll have to update if the moisture doesn’t last. But so far it feels nice. I did have a slight issue with it melting onto itself in the one day it took to get to me. See photos. The tube itself was slightly concave because of the melting. But is still intact. So far though I love this stuff!
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Reviewed in the United States on May 8, 2026
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KS
Grantham, US
★★★★★ 5
Pretty good stuff
Not a miracle cream, but I've certainly paid more for worse lip balm. The tallow is helping keep my lips hydrated, and it feels great when applied. Just got Invisalign, and I struggle with hydration normally, but this is helping keep the lips soft and smooth, and is miles ahead of the cheap drugstore brands that dry more than they help.
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Reviewed in the United States on April 13, 2026

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