RK Autowerks S63 Stage 2 Turbo – M5 (F10/F90), M6 (F12), X5M/X6M (F85/F86)

DescriptionRK Autowerks S63 Stage 2 Turbo UpgradeThe RK Stage 2 Turbo Upgrade is built for those who want serious power gains while keeping the drivability, spool, and reliability of the stock setup. Launch control remains fully functional with this upgrade.To accommodate the larger internals, we CNC-machine OEM housings in-house using our 4-axis mill, preserving the factory bolt-on fitment and simplifying installation — no fabrication or adapters required.Proven Performance:1/4 Mile: 9.7 seconds (Dragy Verified)Platform: F90 M5Build Highlights:RK Forged S63TU4RK Stage 2 TurbosRK Methanol InjectionCSF x RK Charge CoolersStock wheels, tires, and full factory weight                       Vehicle Compatibility:M5 – F10, F90 (2012–2021 )M6 – F06, F12, F13 (2012–2018)M8 – F91, F92, F93 (2018 )X5M – E71, F85, F95 (2009–2021 )X6M – E71, F86, F96 (2009–2021 )Core Exchange Required:Cores must be sent in before shipping or a $2,500 refundable deposit will be collected. Cores must be returned within 21 days to receive the deposit back.Click Here For Warranty Info