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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SKU: 64961133296

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Giselle
Waukegan, US
★★★★★ 5
Great for the price!
Size: 11, Color: White/Glacier Grey
Bought for husband, he says that they feel comfortable have good cushion & feel stable while he runs. Give him traction on the beach running or on pavement! Sharp looking shoes!
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Reviewed in the United States on May 26, 2026
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Michael Balkovic
Cuba, US
★★★★★ 5
Great shoe
Size: 11 X-Wide, Color: White/Glacier Grey
Probably one of the most comfortable shoes I've ever bought. Great for walking on concrete. Light weight and cool and comfortable
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Reviewed in the United States on May 23, 2026
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Mark Cowie
Chelsea, US
★★★★★ 5
Sold on ASICS for my running needs.
Size: 8, Color: Carrier Grey/Anzu
I run 40+ miles a week. These running shoes are terrific. Can afford the expensive brands/models and this fits my feet, price and running requirements. Have purchased several over the years.
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Reviewed in the United States on May 25, 2026
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Josh
Omaha, US
★★★★★ 5
Comfort and Great for Standing
Definitely the best shoe for standing on ur feet all day. I stand for about 7.5 hrs a day and this has changed things for me drastically. The foam makes a difference and the shoe is stylish as well.
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Reviewed in the United States on May 26, 2026
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Adriana Vasilak
Los Angeles, US
★★★★★ 5
ASICS Gel Running Shoes – Comfortable, Lightweight & Perfect for Gym and Running
Size: 10.5 X-Wide, Color: Black/White, Size: 10.5 X-Wide, Color: Black/White
I recently tried a pair of ASICS Gel sneakers, and I’m really impressed. They are extremely comfortable, with great cushioning that makes a big difference during workouts. I’ve used them both at the gym and for running, and they perform very well in both situations. The support is excellent, and they feel stable without being too heavy. I especially like how they absorb impact when running, which helps reduce stress on my feet and knees. They also have a nice fit and feel breathable, so my feet don’t get too hot. Overall, I’m very happy with them. If you’re looking for comfortable and reliable sneakers for the gym and running, I would definitely recommend ASICS Gel shoes.
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Reviewed in the United States on April 20, 2026

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