DRAG SPECIALTIES Bolt Kit Primary Smooth MK673SBK

OEM-quality fasteners are the backbone of any reliable engine assembly, and using the correct bolts for each critical junction ensures proper clamping force, prevents loosening under vibration, and eliminates the guesswork during rebuild. The DRAG SPECIALTIES Bolt Kit Primary Smooth MK673SBK provides a complete, factory-spec fastener solution for either Big Twin or XL platform engines, eliminating the need to source individual bolts from multiple suppliers and giving you confidence that every connection meets Harley-Davidson engineering standards.

Whether you're performing a full motor refresh, replacing worn fasteners, or assembling a complete stroker package, this comprehensive bolt kit covers all primary circuit fasteners and engine case connections in one organized package.

• Complete fastener coverage
• Big Twin and XL compatible
• Primary cover bolts included
• Cam and sensor fasteners
• Derby and rocker box bolts
• Transmission top fasteners
• Transmission side bolts
• Lifter block hardware
• Clutch cover fasteners
• U.S.A. manufactured
• OEM-specification quality
• MPN: 2401-0571