4 Valve Engine Valve Stem Size: 6 mm Diameter (A): 23.11 mm Out Step Diameter (B): 18.41 mm Inn Step Diameter (C): 13.33 mm References: Double Spring - 6 Degree Pro CNC retainer, Ferrea Racing Spring # S10116.
Quad, 5 Valve Engine Valve Stem Size: 5 mm Diameter (A): 16.51 mm Inn Step Diameter (C): 13.33 References: Exhaust (2 pieces). Single Spring-7 Degree Pro CNC, Ferrea Racing Spring # S10119
Quad, 5 Valve Engine Valve Stem Size: 4.5 mm Diameter (A): 16.51 mm Inn Step Diameter (C): 13.33 References: Intake (3 pieces). Single Spring-7 Degree Pro CNC, Ferrea Racing Spring # S10119
Be the first to add a review for this product
Review Product