The Manley NexTek drag-race valve spring set (1.677" diameter, .900" lift, set of 16) is engineered for demanding racing use where consistent spring force is required. NexTek springs resist pressure loss and valve-train degradation, reducing valve bounce deep into a run; made from premium chrome-silicon material with optional polished finishes to reduce friction and extend component life in Sportsman drag-racing applications.
Manley Drag Race NexTek Series 1.677in Dia .900in lift High Performance Valve Springs (Set of 16)