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) 3.445 Bore (mm) 87.5 Top Compression Ring Thickness 0.0400 Second Compression Ring Thickness 0.0480 Oil Ring Thickness 0.111 Forging Type FSR Volume (cc) -13.80 Series JE Pistons Piston Head Type Inv Dome/Dish Pin Diameter (IN) 0.827 Compression Height 1.271 Make BMW Wrist Pin Style - floating or press fit Floating Wall Type CHAMFERED Wall Thickness (IN) 0.150 Ringset Part Number JG1001-3445 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 297118S Replaced By 289133 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 332 Pin Offset Yes Pin Brand JE Pistons Pin Part Number 827-2250-15-51C Pin Included Yes Pin Diameter (mm) 21.00 Oil Rail Support Included No Deck Clearance -0.008 Brand JE Pistons
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