SKU: 77103692857

Piston Set by JE - 77.25mm +.25mm Oversize Bore | 8.3:1 CR | Stroke 85.8mm - MINI Cooper S 2002-2008

Sale price$346.95 Regular price$385.50
Save 10%

Pay in installments of $96.38 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Piston Set by JE - 77.25mm +.25mm 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. 041 Bore (mm) 77. 249 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

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) 3.041
Bore (mm) 77.249
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 312424S
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 241
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 # for standard sized piston:

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:
  1. 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
SKU: 77103692857

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 10 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
B
Verified Purchase
Britt24389
Lexington, US
★★★★★ 5
Excellent!
Size: Small
Good scrubbing and exfoliation! They last a good while too. The ribbon for hanging is also a nice touch. Would buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 28, 2025
M
Verified Purchase
MLG
Lake Worth, US
★★★★★ 4
Sudsy!
Size: Small
I was looking for an organic body scrubber that created lots of suds and was easy to dry without getting moldy. The Cleanlogic body scrubbers fit the bill. I deducted a star because although they are organic, easy to hang dry, create lots of suds and thoroughly exfoliated my body, they’re expensive, in my opinion. I’ve tried different brands and different kinds of scrubbers- natural loofahs, silicone hand exfoliators, body wash cloths- they all had their own shortcomings. The Cleanlogic has been one of my favorite body tools but I haven’t decided if it’s worth the cost of adding to my subscription or buying them on occasion when I want to splurge.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 3, 2026
A
Verified Purchase
Amazon Customer
Port Orchard, US
★★★★★ 5
Perfect cartridges for my Dr. Pen M8 – sterile, secure, and seamless fit
I've been using these replacement cartridges with my Dr. Pen M8 for a couple weeks now, and they're a standout. First off, the packaging is top-notch – everything arrived tightly sealed with no damage, which is crucial for sterile medical-grade supplies like these. No leaks, no mess, just clean and professional presentation right out of the box. What really sets these apart is how flawlessly they integrate with the Dr. Pen M8. They snap in effortlessly with a secure lock, no wobbling or compatibility issues during sessions. The single-use design suspended in individual sterile packaging gives real peace of mind – I can tell they're fresh and uncontaminated every time, which is non-negotiable for at-home microneedling. Pros: Excellent sterile suspension packaging prevents contamination Perfect fit and function with Dr. Pen M8 High-quality build feels reliable for multiple uses No real cons here – these cartridges perform consistently and make the whole process smoother. If you're running a Dr. Pen M8, these are a smart, hassle-free choice that delivers on hygiene and performance. Highly recommend for anyone serious about clean, effective treatments
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
T
Verified Purchase
Taylor Ashley
San Leandro, US
★★★★★ 5
Fits with my Sergand pen!
These fit perfectly with my Sergand pen! Best price I could find on Amazon! I use on my face and they make for a perfect at home microneedling.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
N
Verified Purchase
Nikki lee stippick
Alexandria, US
★★★★★ 5
36 pin micro needle cartridges.
My favorite microneedling cartridges. They are reliable and have never let me down.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026

recommand products