Crower 68156NP-16 Features:

Crower 68156NP-16 dual valve spring set includes 16 springs for LS1 and Viper applications. 1.300 in. dual valve spring design supports high-performance valvetrain setups. Nitride processing, also called Nano-Peen processing, helps increase spring durability. Exact catalog title is consistently verified across authorized Crower distributors.

Valve Springs 1.300 Dual LS1 & Viper Nitride-processed 16-Piece Features:

• 1.300 dual valve spring design for LS1 and Viper applications, supporting valvetrain control in performance-focused engine builds
• Nitride-processed spring surface for improved wear resistance and added durability under demanding high-rpm operating conditions
• Complete 16-piece valve spring set for full-cylinder-head installation, helping streamline matched replacement on compatible engines
• Crower valvetrain component engineered for LS1 and Viper performance applications requiring a 1.300 in. dual spring configuration
• Application-specific dual spring package with nitride processing, combining fitment-focused design and enhanced service life benefits