Specification:
100% brand new and high quality CVT drive belt.
Color: black.
Angle: 30 degree.
Width: 0.69 inch / 17.5mm.
Thickness: 0.39 inch / 10mm.
Length: 27.17 inch / 690mm.
Replace Part Number: 669-18-30, 669 18 30.
Package include: 1 x CVT drive belt.

Compatible with:
Fits 49cc 50cc 80cc 4-Stroke engines, GY6 engines 139QMA 139QMB 1P39QMB.
For most atv, quad, scooter, go kart, moped and other bikes.
Fit most Chinese import, almost all of the bike brands from China, such as TaoTao, ATM, VIP, Buyang, Baja, BMS, Panterra, Freedom, Coolsport, JCL, Jonway, Znen, Zongshen, NST, BMX, Kazuma, Tank, Sunl, Roketa, AIM-EX etc.

Features:
Designed for superior, high mileage and reliable performance.
Made of excellent quality rubber material, it's sturdy and durable in use.
Tested under severe environmental conditions to deliver maximum performance in any terrain or weather.

How to Select the correct belt?
1. Determine the series type.
2. Measure the ”Outer Diameter” (O.D.) of the driven pulley on the jackshaft.
3. Measure the ”Center Distance” (C.D.), which is the exact distance between the center of the engine crankshaft and the center of the jackshaft, must be precise.
4. Use the two measurements, the driven pulley outer diameter and center distance measurement to determine the correct belt part number from the relevant chart below.

Note:
Should your machine's center distance fall between the center distance (C.D.) settings listed here, select from the two belts the one with the larger outside circumference (O.C.) for best wear and to avoid machine ”creep” during idling.