Product Description
Brian Tooley Racing BTR .685" Dual Valve Spring Kit with Titanium Retainers
.685" Lift Dual Spring Kit for 1997-2013 LS Based Gen 3/4 Engines | 170 lbs @ 1.800" | Titanium Retainers
Step beyond the common .660" spring limit with the Brian Tooley Racing (BTR) .685" Dual Valve Spring Kit with Titanium Retainers. Designed for 1997-2013 LS based Gen 3/4 engines using aggressive camshaft combinations, this kit offers the higher spring rate and lightweight titanium retainers needed to help maintain valvetrain stability at higher lift levels. It is a strong choice for serious naturally aspirated, boosted, race, and high-RPM LS builds that require more spring capacity than standard street-oriented spring kits.
Key Features & Benefits
- .685" Lift Dual Valve Spring Kit: This Brian Tooley Racing spring kit is designed for builders moving beyond the .660" lift range of many popular LS spring packages. The .685" spring capacity makes it better suited for radical camshaft profiles that demand additional spring control and valvetrain stability.
- Built for Aggressive LS Camshaft Setups: Higher spring pressure helps control valve motion in applications where camshaft lift, ramp rate, and RPM range place greater demand on the valvetrain. This BTR kit is a practical upgrade for serious LS combinations where standard replacement or lower-lift spring kits are not enough.
- Titanium Retainers Included: Titanium retainers reduce weight at the valve spring assembly compared to heavier retainer materials, helping support more stable valvetrain behavior in performance applications. Brian Tooley Racing includes them in this kit to better match the spring package to high-lift, high-performance LS builds.
- Complete Spring Installation Package: The kit includes dual .685" springs, titanium retainers, spring locating seats, seals, and locks. This gives engine builders and cylinder head shops the key components needed to upgrade the spring package during camshaft installs, head work, or valvetrain refreshes.
- Performance-Oriented Spring Pressure: With 170 lbs at 1.800", 380 lbs at 1.180", and 450 lbs at 1.115", this BTR spring kit is built for demanding camshaft combinations. The supplied pressure specs help builders match the spring package to the intended camshaft and cylinder head setup.
Kit Includes
- Dual .685" Valve Springs
- Titanium Retainers
- Spring Locating Seats
- Valve Seals
- Valve Locks
Specs
- Brand: Brian Tooley Racing
- Product Type: Dual valve spring kit
- Spring Lift Rating: .685"
- Retainers: Titanium retainers
- Seat Pressure: 170 lbs @ 1.800"
- Open Pressure: 380 lbs @ 1.180"
- Open Pressure: 450 lbs @ 1.115"
- Coil Bind: 1.000"
- Engine Family: LS Based Gen 3/4 Engines
Notes
- This kit does NOT fit LS9 engines.
- LS7 engines will require shims.
Key Fitments
- Fits 1997-2013 LS Based Gen 3/4 Engines
