Supertech Valve Springs for BMW / Toyota / Mini B48 engines are designed for those demanding peak performance and reliability. Built for high-revving engines, these valve springs provide enhanced valve control, reducing the risk of valve float and ensuring optimal performance even under the most intense conditions. Supertech's reputation for precision engineering and high-quality materials means their valve spring kits are a trusted choice for enthusiasts, engine builders, and professional race teams. Compared to stock springs, Supertech valve springs deliver superior spring rates and durability, specifically tailored to meet the requirements of high-performance B48 engines. Crafted to handle high RPMs with ease, these valve spring kits allow BMW, Toyota, and Mini B48 owners to confidently push their engines to new performance levels, ensuring proper valve function and maximizing power. Installation requires the expertise of an engine builder. BMW B48 Applications: 1 Series 2016-2019 F20 120i / 125i2019-2023 F40 118i / 120i / 128ti / 135i / M135i2024-Present F70 120 / M135i 2 Series 2014-2021 F22/F23 218i / 220i / 230i2014-2017 F45 220 / 225i2021-Present G42 218i / 220i / 230i2021-Present U06 223i2020-2024 F44 218i / 220i / 228i / M235i2025-Present F74 M235 3 Series 2015-2019 F30/F31/F34 320i / 330i / 330e2018-Present G20/G21 318i / 320i / 330i / 330e 4 Series 2016-2019 F32/F33/F36 420i / 430i2020-Present G22/G23/G26 420i / 430i / 430e 5 Series 2017-Present G30/G31 520i / 530i / 530e 6 Series 2017-Present G32 630i 7 Series 2015-2022 G11/G12 730i / 730Li / 740e / 740Le X1 Series 2015-2022 F48 sDrive18i / sDrive20i / xDrive20i / 25i / xDrive25i / 28i2022-Present U11 sDrive18i / xDrive20i / xDrive28i / M35i X2 Series 2018-2023 F39 sDrive18i / sDrive20i / xDrive20i / 25i / xDrive25i / 28i / M35i2023-Present U10 xDrive28i / M35i X3 Series 2017-2024 G01 sDrive20i / xDrive20i / xDrive30i / xDrive30e2025-Present G45 xDrive20e / xDrive30e X4 Series 2018-Present G02 xDrive20i / xDrive30i X5 Series 2018-Present G05 xDrive25i / sDrive25i Z Series 2018-Present G29 Z4 sDrive20i / sDrive30i Toyota B48 Applications: A90 / A91 Supra 2019-Present J29/DB82/DB22 Supra2020-Present GR Supra 2.0 MINI B48 Applications: MINI Hatch [F55/F56/F57] 2014-Present Cooper S2015-Present John Cooper Works (JCW) MINI Clubman [F54] 2015-Present Cooper S2016-Present John Cooper Works (JCW) MINI Convertible [F57] 2016-Present Cooper S2016-Present John Cooper Works (JCW)
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