Titanium Retainers BTR Engine Spring Lightweight

Description

Product Overview

Brian Tooley Racing’s Titanium Retainers are precision‑machined from aerospace‑grade titanium and feature a polished exterior for optimal durability and corrosion resistance. Weighing only 8.5 g (or 11 g with locks), they are the lightest retainers available for LS dual valve springs, reducing rotating mass and improving engine response. Designed to fit most 1.270″‑1.300″ dual springs, the outer step measures .925″ and the inner step .670″, ensuring a secure fit for .660″ and .645″ lift springs as well as PAC 1206X‑1208X models.

Usage

These retainers are ideal for high‑performance street builds, track day engines, and competition‑level race cars where every gram counts. Install them on LS series engines equipped with dual valve springs to achieve precise spring seating, enhanced valve control, and reduced valve train friction. They are also compatible with Michigan Motorsports and BTR’s own .660″ and .645″ lift spring kits, making them a versatile upgrade for any enthusiast seeking reliable performance.

Why Choose Us

Our retainers combine the strength of titanium with meticulous CNC machining, delivering a component that resists wear and maintains dimensional stability under extreme heat and stress. Each retainer undergoes rigorous quality checks and comes with BTR’s reputation for engineering excellence, ensuring you receive a product that meets the demanding standards of professional motorsports.

Key Features

• Ultra‑light titanium construction at only 8.5 g per retainer
• Polished finish for superior corrosion resistance
• Fits 0.660″ and 0.645″ lift LS dual valve springs
• Compatible with PAC 1206X‑1208X spring series
• Precision‑machined outer step .925″ and inner step .670″ for secure fit

FAQ

What engines are these retainers compatible with?

They are designed for LS series engines using dual valve springs, including both stock and aftermarket spring kits from BTR and Michigan Motorsports.

Do I need additional hardware to install the retainers?

No additional hardware is required; the retainers install directly onto the spring steps. If using locks, add the optional 3 g lock for extra security.

Can these retainers be used with other spring brands?

Yes, they fit most dual springs in the 1.270″‑1.300″ range, including PAC 1206X‑1208X models, as long as the step dimensions match the .925″ outer and .670″ inner specifications.

How does the lightweight design affect engine performance?

Reducing the mass of the retainers lowers rotating inertia, allowing the engine to rev more quickly and respond more precisely to throttle inputs, which is especially beneficial in racing applications.

Are these retainers covered by a warranty?

All BTR titanium retainers come with a limited one‑year warranty against manufacturing defects, reflecting our confidence in their quality and durability.