This Is A Rear Rotor For Trailmaster MB200 And Hurricane Mini Bikes. ( Makes A great Universal Rotor As Well)

• 7 1/4 Inch Diameter
• 4 holes 3/8"
• 3.150" Bolt Circle
• 4 1/25 Bore Size

180 mm Rear Brake Rotor Fits Baja, Doodle Bug, DB30, Motovox. And Monster Moto

High Quality 8" Brake Drum Rotor. Great for 1 Inch Live Axles. Is Also compatible with the Yerf-Dog Spiderbox GX150 Go-Kart. Works great with Sprocket / Brake Hub with 3-1/8" Bolt Pattern

• (4) 5/16" bolt holes on a 3-1/8" bolt circle
  
• .16" Thick

Azusa “Posi Stop” Mechanical Disc Brake Disc Only, 6" OD, 1" Bore, 1/8" Thick

• 1" Axle Bore With 1/4" Keyway
• Dual Pads of Bonded Lining
• Self Aligning to Disc
• 5/16" Arm Hole