2015+ GM LT4 NexTek Valve Springs and Retainers by Manley Performance

Manley NexTek (Next Generation) Valve Springs were developed over a decade ago and still offer unequaled performance.

These durable springs are able to satisfy the demands of top-level engine builders who need the absolute highest-quality valve springs available. Manley NexTek springs can be found in drag race applications ranging from bracket racers to top fuel, oval track engines across the country, and muscle cars on the street and strip.

Features

• Manufactured from HiTensile chrome silicon steel
• Shotpeened to MIL specs for maximum fatigue life
• Proprietary multi-step heat treating minimizes load loss
• Tightly controlled open end flatness reduces valve stem side loading
• Tip thickness designed to eliminate overload breakage
• Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities

Applications

• 2015 - 2019 Chevrolet Corvette Z06
• 2017 - 2019 Chevrolet Camaro ZL1
• 2016 - 2019 Cadillac CTS-V
• 2015+ GM LT4 Engines

Specifications

• Max Valve Lift: .660"

What's In The Box?

• 1 Set - NexTek Valve Springs
• Valve Spring Retainers
• Valve Stem Seals

Warranty

• Manufacturer Standard Warranty