JE Pistons BMW, 3.386in. Bore, Kit - 345622 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. MSRP: $1,214.99 Was: Now: $1,145.72 Add to Cart