The Turbosmart Kompact Supersonic is a billet aluminum vent-to-atmosphere blow-off valve for the 2016+ Honda Civic Si and RS with the 1.5L turbo L15B7 engine. It is a direct-fit upgrade for the factory diverter valve and delivers the signature Supersonic atmospheric BOV sound under boost.
Specifications
| Type | Kompact Supersonic blow-off valve |
| Operation | Atmospheric (vent to atmosphere) |
| Fitment | 2016+ Honda Civic Si / RS 1.5L turbo (L15B7) |
| Body | Billet aluminum |
| Part Number | TS-0203-1018 |
Shipping
- Orders placed before 3 PM ET typically ship the same business day. Some items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands. Contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts cannot be returned. Confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
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