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

Description 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.