JE Pistons Piston Set, 2618, Inv Dome/Dish, 4.390 Bore, 1.350 CD, 0.990, Pin Dia, Set of 8. - 257668
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.
Quantity Per - Set of 8.
Bore (in) - 4.39
Bore (mm) - 111.5
Piston Material - 2618
Pin Part Number - 990-2930-15-51S
Pin Included(Yes/No) - Yes
Pin Diameter (mm) - 25.15
Pin Diameter (IN) - 0.99
Ringset Part Number - J100F8-4390-5
Ringset Included(Yes/No) - No
Retainer Lock Part Number - 990-042-CS
Lock Included(Yes/No) - Yes
Oil Rail Support Part Number (If Required) - 4375-193
Oil Rail Support Included (Yes/No) - Yes
Left or Symmetrical Head Gasket - FD1017-039
Right Head Gasket -
Lethal Performance is proud to offer the entire line of JE Pistons products!
Since 1912, JE Pistons has continued to evolve their manufacturing processes, currently offering racing pistons either off the shelf or fully custom. JE pistons are all designed, forged, and machined in-house, allowing control over every step of the piston-making process. JE’s 7+ decades of experience in high-level racing has led to offering premium racing features, including full billet construction, EN plating, and purpose-designed coatings, to name a few.
