Product Description
Brian Tooley Racing BTR 2009+ 5.7L Hemi .625" Drop-In Valve Spring Kit
Beehive Valve Spring Upgrade for 2009+ 5.7L Hemi Engines | Like Mopar #68277306AA
The Brian Tooley Racing BTR .625" Drop-In Valve Spring Kit is the ideal solution for 2009+ 5.7L Hemi owners looking to upgrade valve spring pressure while retaining OEM-style valvetrain components. This kit utilizes the proven Mopar 68277306AA beehive valve spring design, conveniently packaged as a complete set of 16 springs under BTR part number SP021-16.
Designed as a true drop-in upgrade, these springs are perfect for camshaft upgrades where increased spring pressure is required without converting to aftermarket retainers, locks, or locators. This makes them a cost-effective, reliable choice for street and performance-oriented Hemi builds.
Key Features & Benefits
- Drop-In Design: Installs without modification using factory locks, retainers, and locators.
- OEM-Based Performance: Uses the proven Mopar 68277306AA beehive spring design for reliability and consistency.
- Camshaft Upgrade Ready: Provides increased spring pressure to support aftermarket camshaft profiles.
- Cost-Effective Solution: Retains factory hardware to keep upgrade costs down.
- Complete Set: Includes 16 beehive valve springs for a full engine.
Spring Specifications
- Installed Pressure: 105 lbs @ 1.990"
- Open Pressure: 350 lbs @ 1.365"
- Coil Bind Height: 1.295"
- Maximum Valve Lift: .625"
Fitment
- Fits 2009 and newer 5.7L Hemi engines
Installation Notes
- Uses OEM locks, retainers, and locators (not included)
- Not recommended for use with roller rockers or higher ratio rocker arms due to increased valvetrain mass and potential stability or coil bind issues
- For roller rocker or higher ratio applications, BTR recommends a dual spring kit
