Magnus L19 Main Bolts for McLaren M838T/M840T Exhaust this equates to increases of

this equates to increases of up to 20bhp along with power and torque being increased through the entire rev range which is a remarkable gain for an easy to fit bolt on modification

• he accuracy of digital stepper motor gauges is further increased by utilizing a self calibration sequence during power up

• Pressure tested after assembly to 50 psi

• Your choice of ABS or Carbon front lip splitter

• Full Round 360° Shape

Magnus L19 Main Bolts for McLaren M838T/M840T Exhaust this equates to increases ofMagnus Motorsports L19 main bolts for McLaren M838T and M840T engines. Full set of 20 bolts is a direct OEM replacement. Magnus used bolts on the mains instead of studs as original to stop any oil leakage that could occur, and also offer new sealing washers. 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 M840TE: