YKK® zippers
Weld-in O2 sensor bung lets you incorporate O2 sensors into any exhaust system
No taillight or license plate mount
Smooth power curve throughout the RPM range
DRAG SPECIALTIES Derby Torx Bolt Kit - Big Twin MK675 Freeway Bar YKK® zippersSocket head bolt sets to meet virtually any custom need Complete motor sets for 07 and later Big Twin include bolts for primary, cam, cam sensor, derby, rocker box, transmission top, transmission side, lifter block and clutch covers Complete motor sets for 87 94 Big Twin include bolts for cam, primary, point, clutch, inspection and chain covers, lifter base, inner primary, top front and rear motor mounts, timing plug and header mount screws Complete