Select Vehicle
BMW
Mini
Create an account to be able to build Wish Lists.
Please ensure your correct model is selected
This product was last offered at the strikethrough price on
07-17-2026
This product was last offered at the strikethrough price on
07-17-2026
Elevate your Mini Turbo Models, including Cooper S and JCW, with the ALTA BOV Spring Upgrade. This replacement spring offers a cost-effective, high-performance solution for your stock Blow Off Valve (BOV). By holding more boost between shifts, it significantly reduces turbo lag, enhancing overall performance. The carefully designed stiffer spring ensures normal BOV operation while maintaining increased pressure in the boost tubes, preventing power gaps.
Forge Motorsport is thrilled to present a LIMITED EDITION version of their highly popular solenoid driven valve, specifically designed for the Gen 2 MINI Engine. This exceptional product is meticulously crafted to cater to BMW Mini Cooper S models equipped with N14 engines, including Gen 2 Cooper S 2007-2010 and JCW 2009-2012, featuring electronically controlled bypass valves. It's the ultimate choice for vehicles that have had their boost pressure increased through ECU software upgrades or for unmodified vehicles operating in warmer climates, providing a dependable solution to prevent common failures.
Designed with precision for BMW Mini Cooper S models equipped with N18 engines, this product is tailored to fit Cooper S vehicles from 2011 onwards and JCW Cooper S from 2013 onwards. Whether you've recently boosted your vehicle's performance through an ECU software upgrade, desire an attention-grabbing Blow off sound, or need a dependable solution to prevent common failures, this product is the perfect choice for you.
Exclusively available in a limited edition Red color option at Turner Motorsport, it's an opportunity to make a bold and distinctive statement with your Mini Cooper S.
Optimize your BMW's performance by adjusting your diverter or blow-off valve using this kit containing four springs with varying strengths. When noticing excessive pressure release or a drop in boost pressure, it's an indicator that a stronger spring might be necessary.
Important Notes:
Valve Spring Color Coding:
Designed specifically for the BMW Mini Cooper S fitted with the N18 engines, these are Cooper S 2011 onwards and JCW Cooper S 2013 onwards. This product is either recommended where the boost pressure has been increased by an ECU software upgrade or simply for those wanting a loud Blow off sound or simply as a solution to the many failures that have occurred.
Designed with precision, this product is tailor-made for BMW Mini Cooper S vehicles featuring N14 engines, focusing on Gen 2 Cooper S (2007-2010) and JCW (2009-2012) editions equipped with electronically controlled bypass valves.
MINI R55 to R59 Upgraded Diverter Valve is designed for Peugeot/BMW MINI 1.6 Turbo engines, found in Peugeot 207/307/308 GT Turbo and BMW MINI Cooper S Turbo R56/57 models. This valve is ideal for vehicles with increased boost pressure from an ECU software upgrade and for unmodified vehicles in warmer climates, providing a solution to common failures. Key features include: