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Manley 26170 Pro Series Valve Spring and Titanium Retainer Kit Sport Compact

(Nissan Altima 2002-08, Pathfinder 2001-04, Maxima 2002-08, 350Z 2003-07, Murano 2003-04, Quest 2004; Infiniti G35 2003-07, FX35 2003-08 + 3 more models)

Part of: Manley Pro Series Valve Spring Titanium Retainer Kit

Other options in this family: Manley 26130K Manley 26130 Manley 26185 Manley 26120 Manley 26190

Manufacturer

Picture for manufacturer Manley

Part Number

26170
6 reviews
Sale Price

$570.32

Estimated ship date Tuesday, November 24

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No Hassle Returns

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Manley 26170 Pro Series Spring and Retainer Kit is a precision-matched valvetrain upgrade engineered for high-revving sport compact engines running aggressive aftermarket camshafts. This complete kit pairs performance valve springs with aerospace-grade titanium retainers to deliver superior valve control, reduced valve float risk, and long-term reliability under extreme RPM conditions.

Valve Springs

Manley's Pro Series valve springs are wound from super-clean, chrome-silicon high-tensile strength steel alloy — one of the most fatigue-resistant materials available for valvetrain applications. Each spring undergoes specialized heat treatment and shot peen processing to maximize service life and minimize load loss over time, ensuring consistent valve control run after run.

Titanium Retainers

Manley titanium retainers are CNC-machined on dual-spindle machines from certified, heat-treated aerospace-grade titanium bar stock. The result is a precision component with a jewel-like finish and tight tolerances — retainer angles held to within 6 minutes (one-tenth of a degree) and installed heights held to within .005". The lightweight mass of titanium retainers directly reduces valvetrain inertia, allowing higher sustained engine speeds without the risk of dangerous valve float.

Key Features:

  • Chrome-silicon high-tensile strength steel valve springs with heat treatment and shot peen processing
  • Aerospace-grade titanium retainers — CNC-machined to exacting tolerances
  • Retainer angles held to within 6 minutes (0.1°); installed heights held to within .005"
  • Designed to handle aggressive aftermarket camshafts and up to 10,000 RPM
  • Reduced valvetrain inertia for higher engine speeds without valve float
  • Matched spring and retainer set for simplified selection and installation

The Manley 26170 Pro Series kit eliminates the guesswork of sourcing compatible valvetrain components, delivering a race-proven, precision-matched solution for high-performance sport compact engine builds.

Products specifications

Fits

Nissan Altima 2002-08, Pathfinder 2001-04, Maxima 2002-08, 350Z 2003-07, Murano 2003-04, Quest 2004; Infiniti G35 2003-07, FX35 2003-08, M35 2006-08, I35 2002-04, QX4 2001-03

Max Net Lift

.455"

Excellent price and fast shipping. Product showed up as described and timely.

Thanks Autoplicity you had the best prices I could find, fast shipping, and everything I ordered was exactly what I was looking for! Great Customer Service!

Good supply and reasonable

absolutely lowest price on my Griffin radiator and super fast with the shipping to boot, what more could you ask for!

Quickly received item. Exactly what I ordered and was best price out there. Will do business with them again.

Great pricing and delivered in 3 days.

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