6%) at 5500rpm
lightning-fast valve actuation
Real world research and development give M/T slicks the edge over competitive brands
* Must be used with an ACT Clutch Kit
03" 585g CRS5900MA3D 900HP H-Beam 3/8" ARP 2000 0
Magnus High Pressure Upgraded Valve Springs for McLaren V8 M838/M840 Doorman 6%) at 5500rpmMagnus Motorsports high pressure upgraded valve springs for McLaren V8 engines provide the valve control required for high RPM, high boost and motorsport level operation. Vehicle Fitment: McLaren 3. 8L & 4. 0L V8 Twin Turbo M838T: 625C, 650S, 675LT, MP4 12C, MSO 688 HS M838TE: 540C, 570S, 570GT, 600LT, 620R M840T: 720S, 750S, 765LT, Senna, Elva, Speedtail, Sabre M840TE: GT, GTS Purchase Includes: (32) Valve Springs Note: Retainers are NOT included.