2006-2010 Honda Civic K Series Valve Spring and Titanium Retainer Kit

Part number: 344-05-1410

Fitment:

2004 - 2008 Acura TSX (Base)
2006 - 2010 Honda Civic Coupe (Si)
2002 - 2005 Honda Civic Hatchback (Si)
2007 - 2010 Honda Civic Sedan (Si)
2003 - 2008 Honda Element (2WD EX, 4WD EX)
2004 - 2008 Honda Element (2WD LX, 4WD LX)
2003 - 2004 Honda Element (2WD DX, 4WD DX)

Note: Engines originally equipped with single valve springs must use K-Series Spring Base Kit, available separately.
Seat Pressure: 60 lbs at 1.600”
Open Pressure: 220 lbs at 1.100”
Coil Bind: 1.000”

Please note:

When using Skunk2 Titanium Retainers on 2004 and newer engines, pre-2004 keepers (cotters) must be used 
(Honda P/N 14781-PR7-A01). Pre-2004 keepers can be identified by the absence of marks along the top edge (2004 and 
newer keepers feature laser-etched marks along the top edge). For applications where 2004 and newer keepers are used, 
Skunk2 Titanium Retainers must be used. Proper retainer/keeper selection is important due to varying angle ratios 
between earlier and later keeper designs. Use of improper retainers and/or keepers may result in potential engine damage.

Product Description:

Skunk2 is proud to introduce its Alpha Valve Spring and Titanium Retainer Kit for Honda’s K-series engines. Each kit 
includes Skunk2’s high-quality dual valve springs and race-proven titanium retainers that are the result of nearly two 
decades of racing and engine building experience.

Each Alpha Valve Spring is manufactured exclusively from super-clean, chrome-silicone wire milled in Japan. By using inner 
and outer springs mated together through a slight interference fit and with differing frequencies, Alpha Valve Springs are 
able to prevent valve float and maintain valvetrain stability at engine speeds in excess of 10,000 rpm.

Skunk2’s industry-leading Alpha Titanium Retainers are designed to significantly reduce valvetrain mass, resulting in more 
horsepower and improved valvetrain stability. Similar to Skunk2’s already popular Pro Series Titanium Retainers, Alpha 
Titanium Retainers feature radius-cut edges for additional rocker arm clearance and reduced weight, strategically 
positioned lightening grooves, and reduced overall heights for better valve seal clearance and even further weight reduction.

Alpha Titanium Retainers are manufactured using the latest 3D CAD (Computer Aided Design) and FEA (Finite Element Analysis) 
to ensure that each is optimized for strength as well as for reduced weight. Skunk2 engineers then test and prove their 
designs on the engine dyno as well as the race track. Once approved for manufacturing, only medical-grade titanium that’s 
been ultrasonically inspected and certified is used. Following CNC machining, each retainer is then individually inspected 
to ensure proper hole diameter, taper, and that each are free from machining defects to ensure proper installed valve spring 
heights and pressures. Finally, each retainer is serialized for your protection, including valuable information, like material 
batch specifics as well as production and inspection dates.

Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance 
gains. During development, each valvetrain component is tested both on the dyno and the road, including 11,000 rpm drag racing 
engines and 17,000 rpm superbikes. Manufactured from the best materials available, Skunk2 valvetrain components provide 
exceptional performance, reliability, and quality and remain standard-issue on each Skunk2 vehicle that we build and support.