SKU: 13010-8 | UPC: 807298064727
Manley Honda/Acura 5.5mm OEM Radius Sport Compact Valve Locks (8pc) 1992-2011
Manley 5.5mm OEM Radius Sport Compact Valve Locks deliver secure valve stem retention for Honda and Acura four-cylinder engines in performance applications. These locks match 1992-2011 Civic Si Integra GS-R RSX Type-S Accord Prelude S2000 models with 5.5mm stems and factory radius grooves. The 8-piece set equips one cylinder head for all intake and exhaust valves to manage high RPM without float or failure.
Key Features
- 5.5mm Stem Diameter: Exact fit for Honda/Acura valve stems ensures zero play and firm lockup in demanding valvetrain conditions
- OEM 10 Degree Radius Design: Locks into standard grooves on stock or aftermarket valves for consistent retention under boost and high revs
- Chromoly Steel Construction: Heat-treated 4140 chromoly steel withstands fatigue from drag racing road course and track use
- Black Oxide Finish: Prevents rust and galling for smooth installation and durability in high-heat oily environments
- 8-Piece Set: Complete kit for one inline-four cylinder head with matched locks for all 16 valves
Product Notes
- Verify valve stem is 5.5mm with OEM radius groove before installation
- Pair with Manley valves or OEM equivalents for optimal performance
- Packaged in protective box for safe transit
Installation Notes
- Professional installation recommended.
- Valve spring compressor tool required for removal and installation
- Works with stock retainers and springs. Torque to manufacturer specs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1997-2001 | Acura | Integra | GS |
| 1992-2001 | Acura | Integra | GS-R |
| 1994-2001 | Acura | Integra | LS |
| 1994-1998 | Acura | Integra | RS |
| 1995-1996 | Acura | Integra | Special Edition |
| 1997-1998 | Acura | Integra | Type R |
| 2000-2001 | Acura | Integra | Type R |
| 2002-2006 | Acura | RSX | Base |
| 2002-2006 | Acura | RSX | Type-S |
| 2004-2008 | Acura | TSX | Base |
| 2003-2005 | Honda | Accord | DX |
| 2003-2007 | Honda | Accord | EX |
| 2003-2007 | Honda | Accord | LX |
| 2006 | Honda | Accord | LX Special Edition |
| 2007 | Honda | Accord | Special Edition |
| 2006-2007 | Honda | Accord | Value Package |
| 2004-2008 | Honda | Element | LX |
| 2007-2008 | Honda | Element | SC |
| 1997-2001 | Honda | Prelude | Base |
| 1997-2001 | Honda | Prelude | Type SH |
| 1993-1996 | Honda | Prelude | VTEC |
| 2000-2008 | Honda | S2000 | Base |
| 2008 | Honda | S2000 | CR |
| 2008 | Honda | Civic | MUGEN Si |
| 1999-2000 | Honda | Civic | Si |
| 2002-2011 | Honda | Civic | Si |
| 1994-1997 | Honda | Civic del Sol | VTEC |
| 1998-2008 | Honda | CR-V | EX |
| 1997-2008 | Honda | CR-V | LX |
| 2000-2001 | Honda | CR-V | SE |
| 2003-2004 | Honda | Element | DX |
| 2003-2008 | Honda | Element | EX |
Why Choose Manley?
- Over 40 years engineering valvetrain components for motorsports
- USA-made with tight tolerances for dependable performance
- Proven through real-world drag racing and circuit testing
Frequently Asked Questions
-
Q: Will these fit B18C or K20 engines?
A: Yes fits B-series D-series F-series H-series K-series heads with 5.5mm stems and OEM radius grooves -
Q: What material are the valve locks made from?
A: Precision machined from heat-treated 4140 chromoly steel with black oxide coating for strength and durability -
Q: Do they work with aftermarket valve springs?
A: Yes compatible with most aftermarket springs and retainers as long as stem diameter and groove match
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Compact protective box 4 x 3 x 1 inches
- Weight: 0.2 lbs
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