GY6 Cylinder Head Bolt Set 8mm 197mm 188mm
2 Larger Studs: 197mm (7.76″) Length. 2 Shorter Studs: 188mm (7.4″) Length. GY6 Cylinder Head Bolt Set. Why Choose Our GY6 Cylinder Head Bolt Set?. 8mm (0.31″) Width. Heat-treated for superior longevity and resistance to stretching.