DRAG SPECIALTIES Bolts - Button-Head - 5/16"-24 x 3/8" MPB268 Throttle Cover which helps to enhance the

which helps to enhance the low frequency tones 4" round muffler front expands just aft of the steel clam shell clamp to 4

Comes equipped with a removable USFS approved spark arrestor

Note: Bike side and the separate listing bench tuning kit do the same thing but one tunes off the bike and the other attaches to the bike

This single line update kit is needed when you switch the ZX-4RR OEM master with a upgraded unit like the Galespeed VRD options we offer

DRAG SPECIALTIES Bolts - Button-Head - 5/16"-24 x 3/8" MPB268 Throttle Cover which helps to enhance theReplacement bolts for Drag Specialties Button Head Bolt Assortment Kit Made in the U. S. A.