4G63 DOHC Extreme Force Beehive Springs | KVS63-EXTREME hyper-gate GTS4 and 260RS is a

GTS4 and 260RS is a set of 8

Kelford Cams recommend KVS40-K valve spring kit

FOR STANDARD (CAMSHAFT DRIVEN) PLEASE SEE OUR OTHER LISTING HERE

The Dual Port's intelligent modular design also allows you to simply unscrew the vent-to-atmosphere trumpet

The StraightGate50Â provides more flow than any conventional 60mm poppet style valve while also providing more control and almost linear response for unparalleled boost control throughout the entire operating range

4G63 DOHC Extreme Force Beehive Springs | KVS63-EXTREME hyper-gate GTS4 and 260RS is aUltimate Valve Spring and Retainer Kit for Drag Racing 4G63 engine Designed for 1650+HP applications 11,000+RPM Not for the faint hearted, ready to break records. Key features: 142lb on the Seat, 292lb open Pac Racing High Frequency Beehive Huge 14mm to coil bind 4340 Black Nitrided Retainer for extra durability 4140 CNC machined seat Intake installs at 39. 5mm 132 lbs. seated, 278lbs at 12mm lift. Exhaust installs at 38. 5mm 142 lbs. seated, 292 lbs.