Ferrea 15-24 BMW S58 Single Spring Kit

The Ferrea KT4059 Valve Spring Kit is engineered for high-performance applications in BMW S58 engines, including those found in the M3 G80, M4 G82/G83, M2 G87, and X3 M/X4 M models. This comprehensive kit includes 24 single valve springs (#S10186), 12 titanium retainers for the intake side (#E11154), 12 titanium retainers for the exhaust side (#E11153), 12 seat locators for the intake side (#SL1190), and 12 seat locators for the exhaust side (#SL1189), providing all necessary components for a complete valvetrain upgrade.

Constructed from premium-grade materials, these valve springs are heat-treated and stress-relieved to withstand extreme racing conditions. The single spring configuration reduces weight and improves harmonics, making it ideal for both naturally aspirated and forced induction applications up to 9,000 RPM.

Designed to control harmonics and reduce valvetrain component wear, the KT4059 kit ensures enhanced durability and performance. Compatible with Ferrea titanium retainers and valve locks, this kit offers a reliable solution for enthusiasts seeking to maximize their engine's potential.

Vehicle Fitment

• 2015–2024 BMW M3 G80
• 2015–2024 BMW M4 G82/G83
• 2020–2024 BMW M2 G87
• 2019–2024 BMW X3 M (F97)
• 2019–2024 BMW X4 M (F98)

Kit Components

• 24x Single Valve Springs (#S10186)
• 12x Titanium Retainers (Intake side) (#E11154)
• 12x Titanium Retainers (Exhaust side) (#E11153)
• 12x Seat Locators (Intake side) (#SL1190)
• 12x Seat Locators (Exhaust side) (#SL1189)

Features

• Designed for high-performance applications up to 9,000 RPM
• Single spring configuration for reduced weight and improved harmonics
• Constructed from premium-grade materials for durability
• Heat-treated and stress-relieved to withstand extreme racing conditions
• Compatible with Ferrea titanium retainers and valve locks
• Ideal for both naturally aspirated and forced induction setups

Specifications

• Material: Titanium retainers, chrome silicon steel springs
• Design: Single spring configuration
• Quantity: 24 springs, 12 intake titanium retainers, 12 exhaust titanium retainers, 12 intake seat locators, 12 exhaust seat locators
• Maximum Lift: Approximately 0.600" (15.24 mm)
• Maximum RPM: Approximately 9,000

Installation Notes

• Ensure proper installation to maintain valvetrain integrity
• Compatible with Ferrea titanium retainers and valve locks