Magnus High Pressure Upgraded Valve Springs for McLaren V8 M838/M840

Magnus 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.
Professional installation recommended.

More from Magnus:
Engineered specifically for the McLaren 720S M840T engine and titsis associated family, Magnus McLaren Valve Springs provide the valve control required for high-RPM, high-boost, and motorsport-level operation. Designed using Magnus’ proven race engineering philosophy, these springs eliminate the limitations of factory components when power and engine speed increase.

Increased seat and open pressures ensure stable valve control with aggressive cam profiles, elevated boost levels, and sustained high RPM. Manufactured from premium materials and validated through real-world competition use, these valve springs are a critical supporting component for serious McLaren engine builds. Eliminates common spring breakage found in all McLaren V8 engines. Don’t rebuild your engine without putting a new set of valves springs!

Features:
• Direct fit for McLaren 720S M840T engines
• Increased seat and open pressures
• Improved valve control at high RPM
• Eliminates common spring breakage associated with Mclaren engines
• Designed for high-boost and motorsport use
• Precision manufactured and race tested