Skunk2's Alpha titanium retainers cut valvetrain mass on the Honda/Acura B-series VTEC head, freeing horsepower and improving valvetrain stability at high rpm. Radius-cut edges add rocker arm clearance, while lightening grooves and a reduced overall height trim weight and improve valve seal clearance. Each retainer is CNC machined from certified titanium, individually inspected, and serialized.
| Type | Alpha Series titanium valve spring retainer set |
| Material | Titanium (medical-grade, ultrasonically inspected) |
| Quantity | Set of 16 (full head) |
| Part Number | 308-05-1300 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1990-1993,1997-2001 | Acura | Integra | GS |
| 1992-2001 | Acura | Integra | GS-R |
| 1990-2001 | Acura | Integra | LS |
| 1990-1998 | Acura | Integra | RS |
| 1995-1996 | Acura | Integra | Special Edition |
| 1997-1998,2000-2001 | Acura | Integra | Type R |
| 1999-2000 | Honda | Civic | Si |
| 1994-1997 | Honda | Civic del Sol | VTEC |
| 1997-2001 | Honda | Prelude | Base |
| 1997-2001 | Honda | Prelude | Type SH |
| 1993-1996 | Honda | Prelude | VTEC |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. 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.
