


Alta 'Stiffy' Blow-Off Valve Spring (Gen 2)
Alta have tested their spring up to 40psi (more boost than you could ever need) without any signs of fatigue or failure and state that the Custom Made Heat treated 17-7 Stainless Steel can survive over 7 million cycles.
The spring is stiffer than the JCW item and thus is geared towards owners that are running higher boost pressures than standard. Easy installation makes this not only cost effective but also brilliant value for money.
Overview
- Boost pressure retained between gear changes
- Tested to 40 PSI
- More responsive
- Reduced lag
All MINI Cooper S / JCW / Convertible Models
Original: $30.50
-65%$30.50
$10.67Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Alta have tested their spring up to 40psi (more boost than you could ever need) without any signs of fatigue or failure and state that the Custom Made Heat treated 17-7 Stainless Steel can survive over 7 million cycles.
The spring is stiffer than the JCW item and thus is geared towards owners that are running higher boost pressures than standard. Easy installation makes this not only cost effective but also brilliant value for money.
Overview
- Boost pressure retained between gear changes
- Tested to 40 PSI
- More responsive
- Reduced lag
All MINI Cooper S / JCW / Convertible Models






















