Manley 221442-16 Valve Spring Set, Set of 16

Manley's NexTek® valve springs are the latest in valve spring technology. The main benefit of the NexTek® springs is that they resist degradation of spring pressure in the later stages of a race. This is critical in oval track racing, where an engines valve train is abused for a long period of time. The spring inside diameter is chamfered for retainer clearance. The state-of-the-art winding process, thermal treatment and finishing practices cannot be duplicated, making these springs unique. The specially processed premium-grade chrome silicon is virtually free of impurities or surface irregularities, making for a high-quality, high-performance valve spring. NexTek® Series valve springs have been tested by leading engine builders and are confirmed to be the best performing valve springs on the market today!

• Manufactured from ''super clean'' HiTensile Chrome Silicon steel
• Shotpeened to MIL Specs for maximum fatigue life
• Proprietary multistep heat treating minimizes load loss
• Tightly controlled open end flatness reduces valve stem side loading
• Tip thickness designed to eliminate overload breakage
• No degradation of spring pressure in the later stages of a race
• Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities
• NexTek® Series valve springs have been tested by leading engine builders and are confirmed to be the best performing valve springs on the market today