Electronic Bypass / Retard Valves. Now in stock.
The actual name is a QTP Electronic Exhaust Bypass Valve, but around here it’s become known as a ‘Retard Valve’ ever since we fitted one to my V10 M3.
Now in stock and available in the shop in sizes: 2.5″ 3″ 3.5″ & 4″ with the optional Ypipes available to make fitting nice and easy.
We’ll be fitting one to both the Driftworks S15 and the R32 soon! If you’re interested in joining the Retard club check out prices and the full description in the shop HERE