4G63 DOHC Extreme Force Beehive Springs

Ultimate Valve Spring and Retainer Kit for Drag Racing 4G63 engine._x000D_\nKey features:_x000D_\n _x000D_\n* 142lb on the Seat, 292lb open_x000D_\n* Pac Racing High Frequency Beehive_x000D_\n* Huge 14mm to coil bind_x000D_\n* 4340 Black Nitrided Retainer for extra durability_x000D_\n* 4140 CNC machined seat_x000D_\n* Designed for 1650+HP applications_x000D_\n* 11,000+RPM_x000D_\nNot for the faint hearted, on the shelf ready to break records._x000D_\n _x000D_\nIntake installs at 39.5mm 132 lbs. seated, 278lbs at 12mm lift._x000D_\nExhaust installs at 38.5mm 142 lbs. seated, 292 lbs. at 12mm lift._x000D_\nMaximum lift 14.0mm_x000D_\n_x000D_\n _x000D_\n

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