Ferrea Valve Spring & Titanium Retainer Kit — BMW N54 / S55
DESCRIPTION
Ferrea’s KT4026 valvetrain kit combines single valve springs with titanium retainers for N54 and S55 engine builds.
Key details
- 24 S10158 single springs.
- 12 E11130 exhaust and 12 E11131 intake titanium retainers.
Fitment
BMW N54 and S55 engines using the KT4026 specification. This listing does not cover N55.
Installation
Specialist cylinder-head assembly required. Measure installed height, spring pressure, coil-bind and retainer clearances against the selected camshaft.
DISCLAIMER
Where applicable, the use of de-cats, sports cats and removing OPF/GPF systems is for off-road/motorsport use only. Using these parts may prevent your vehicle from passing an MOT test. Only EC type-approved components are legal and fit for road use.
SHIPPING & WARRANTY
Free UK shipping on all orders. In-stock orders are dispatched Monday–Friday. Please refer to the live dispatch estimate above for the current estimated dispatch day. Tracking is provided once your order is dispatched.
Warranty coverage varies by product and manufacturer. Please contact us if you need confirmation of warranty coverage before ordering. Your statutory rights are unaffected.