DRAG SPECIALTIES Softail Knurled Primary Bolt Set MK266

A complete engine bolt set eliminates the frustration of sourcing fasteners from multiple vendors and ensures every connection meets OEM specifications. Whether you're assembling a stroker motor or refreshing your Big Twin or Sportster, these knurled socket-head bolts provide the reliability and finish quality that separates a professional build from a backyard patch job. Made in the U.S.A., this set covers every critical fastening point on your engine, so you can focus on what matters—getting your bike running right.

• Socket-head cap bolts
• Knurled finish
• Manufactured in the USA
• MPN: DS-190879
• Big Twin 07+: Primary, cam, cam sensor, derby, rocker box, transmission top, transmission side, lifter block, clutch covers
• Big Twin 87–94: Cam, primary, points, clutch, inspection covers, lifter base, inner primary, motor mounts, timing plug, header mounts
• Sportster 04+: Primary, cam, derby, lifter block, points cover, rocker box, engine case
• Sportster 86–03: Cam, primary, generator, sprocket, rocker box, motor mount, lifter base, magneto cover