The Turbosmart Supersonic is a full atmospheric blow-off valve built for racers who want to be heard, delivering strong flow with the distinctive Supersonic sound that makes it Turbosmart's loudest valve. A positive-seal piston holds boost, and a rotating cap allows tool-free spring preload adjustment.
| Type | Full atmospheric blow-off valve |
| Adjustment | Tool-free rotating cap |
| Seal | Positive-seal piston |
| Sound | Supersonic (Turbosmart's loudest) |
| Color | Black |
| Part Number | TS-0205-1301 |
Documents: Installation Instructions (PDF)
Shipping: In-stock orders placed before 4 PM EST ship the same day, with standard, expedited, and overnight options available at checkout. Backordered items ship as soon as our distributor restocks — contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
