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EC 5mm Billet Titanium Retainers for Large Diameter Dual Springs
EC Billet Titanium Retainers and Locks for 5mm Valve Stems
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EC 5mm Billet Titanium Retainers for Large Diameter Dual Springs

Part Number: 279-50-T2
Online Price: $29.99
EC Billet Titanium Retainers for 5mm Valve Stems | High-Performance Dual Valve Spring Retainers
Availability: In Stock.

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Description

EC Billet Titanium Retainers for 5mm Valve Stems – Designed for Large Diameter Dual Valve Springs


Our EC Billet Titanium Retainers are precision-engineered to fit 5mm valve stems using our high-performance 270 Dual Valve Springs. These retainers are specifically designed to provide superior coverage of larger diameter dual valve springs, such as our EC 270 and Comp Cams GP-966-2 springs, where many other retainers fail to cover the top of the outer spring fully.


Key Features & Benefits:

  • Lightweight & Durable: Made from high-grade titanium, these billet retainers significantly reduce valve train weight, enhancing stability and performance at high RPMs. Titanium combines exceptional strength with a low mass, making it ideal for aggressive cam profiles and high-ratio rocker setups.
  • Optimized Fit: Unlike many retainers on the market, these are engineered to completely cover larger dual springs (outer spring ID .750”, inner spring ID .650”), providing superior spring retention and valve train reliability.
  • Application Notes:
    • Not compatible with Comp Cams GP-965-1 springs.
    • Lash caps are not included.
    • Dual valve springs should not be used with stock valves. We strongly recommend pairing these retainers with our 5mm stainless steel valves for optimal durability and performance.

Recommended Valves for Dual Spring Setup (Sold Separately):

  • R-35: 25mm (Stock Exhaust) +0.050" Longer Stainless Steel Valve
  • R-36: 27mm (Stock Intake) +0.050" Longer Stainless Steel Valve
  • R-37: 32mm +0.050" Longer Stainless Steel Valve

Additional Information:

  • Rocker arm assemblies and other hardware are not included and must be purchased separately.
  • These retainers fit 5mm valve stems commonly found in Predator Non-Hemi 212, Tillotson 212R, and Tillotson 225R/RS engines.
  • Each kit includes 5mm valve keepers/locks for secure installation.

FAQ

Q1: What engines are these EC Billet Titanium Retainers compatible with?
A1: These retainers fit 5mm valve stems commonly used in Predator Non-Hemi 212, Tillotson 212R, Tillotson 225R/RS, and similar small-block engines equipped with large diameter dual valve springs like EC 270 and Comp Cams GP-966-2.


Q2: Can I use these retainers with stock valve springs or valves?
A2: No. These retainers are designed specifically for dual valve springs and require 5mm stainless steel valves for proper fit and durability. Using them with stock valves or springs is not recommended.


Q3: Do these retainers come with lash caps or rocker arms?
A3: Lash caps and rocker arms are not included with this product. The kit includes only the billet titanium retainers and 5mm valve keepers/locks.


Q4: Will these retainers fit all dual valve springs?
A4: These retainers fit dual valve springs with an outer spring inner diameter (ID) of 0.750” and inner spring ID of 0.650”, like the EC 270 and Comp Cams GP-966-2. They do NOT fit Comp Cams GP-965-1 springs.


Q5: How do titanium retainers improve engine performance?
A5: Titanium retainers are lighter than traditional steel retainers, reducing valvetrain weight and inertia. This improves valve control and stability at high RPMs, especially when paired with aggressive cam profiles and high-ratio rockers.

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