Heavy Duty 40T 40mm Bore Mini Bike Sprocket For 420 Chain Replacement Fit CT200U BT200X MB165 MB200 Baja Warrior TrailMaster Massimo Predator 196cc Go Kart Parts

40T 40mm Bore Rear Sprocket for Mini Bikes & Go Karts
✔️ 40T, 40mm bore, 6.5 in OD, 1-9/16 in center, 420 chain

Designed as a heavy-duty replacement sprocket for 420 chain systems on popular mini bikes and go karts. It’s a trusty upgrade for models like CT200U, BT200X, MB165/MB200, Baja Warrior, TrailMaster MB200, and Massimo MB200, delivering reliable power transfer and long-lasting performance.

✅ Compatible with Coleman CT200U, CT200U-EX, CT200U-EXR, BT200X, Baja Warrior, TrailMaster MB200, Massimo MB200, MB165 MB200.
✅ Durable precision-machined alloy with a black anodized finish to resist rust.
✅ Easy installation: 40T, bore 40 mm (1-9/16 in), OD 165 mm (6.5 in), center hole 40 mm (1.56 in), fits 420 chain.
✅ Improves power transfer for better speed, acceleration, and ride response.
✅ Package includes: 1 sprocket, 4 nuts, 4 screws, 3 master links.

💡 What is a rear sprocket used for in small engine machines?

A handy replacement part that transfers power from the chain to the drivetrain and helps control speed and torque across riding conditions.

• 420 chain compatibility for mini bikes and go-karts
• Tooth count affects top speed, acceleration, and hill climbing
• Match bore size and mounting pattern for CT200U, MB200, TrailMaster MB200
• Durable finish resists outdoor wear and corrosion