Thread length: 12 mm

Mirror stem is 8mm threaded

Manufactured from black unpainted ABS plastic with a clear plexiglass windshield

5 3/4 Inch in metal housing

megaton shorty universal slip on motorcycle muffler Color:Chrome Thread length: 12 mmMegaton Shorty Universal Slip On Motorcycle Muffler The Megaton Shorty Universal Slip On Muffler offers a classic vintage look that will enhance both the look and sound of your bike. Perfect for Caf Racers and other classic bikes. Optional adjustable sound baffle available. Features: Dimensions: 17" (43. 2 cm) long, 1 3 4" (4. 4 cm) inlet, 3 3 4" (9. 5 cm) outside diameter Header clamp included Fits headers with a 1 3 4" (4. 4 cm) outer diameter