52.4mm Cylinder Gasket and Piston Ring Set for CRF125F/CRF125FB, 2014–2023
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In stock · Free Shipping
LK-B0-39 GY6 Clutch and Variator Assembly Kit with 669 Belt
$56.99
In stock
✓ Free Shipping
Complete 3-piece drivetrain kit with one clutch assembly, one variator assembly, and one 669 x 18 x 30 belt for specified GY6 4-stroke 139QMB applications.
Price shown is the online purchase price. Free shipping · 30-day return policy
BrandLK LEAPING KNIGHT
MPN / Part NumberLK-B0-39
Part TypeClutch and variator assembly kit with drive belt
Product Description
The LK-B0-39 kit includes a clutch assembly, variator assembly, and 669 x 18 x 30 drive belt. It is specified for GY6 50cc, 60cc, and 80cc 4-stroke 139QMB engines with short-case designs. The clutch drum has 22 splines, a 12 mm internal spline diameter, a 115 mm outer diameter, and a 105 mm inner diameter. The variator uses 16 x 13 mm rollers. Components are made from iron and aluminum, and the belt is reinforced for high-temperature use.
Product Specifications
BrandLK LEAPING KNIGHT
ManufacturerLEAPING KNIGHT
Manufacturer Part NumberLK-B0-39
Item Weight6.5 pounds
ModelLK-B0-39
Package Dimensions16.14 x 7.68 x 6.5 inches
Item model numberLK-B0-39
ExteriorChrome
Explicit Manufacturer Part NumberLK-B0-39
Included componentsClutch assembly, variator assembly, and 669 belt
Belt size669 x 18 x 30
Clutch drum splines22
Clutch drum internal spline diameter12 mm
Clutch drum outer diameter115 mm
Clutch drum inner diameter105 mm
Variator roller size16 x 13 mm
ConstructionIron and aluminum
Belt materialReinforced, heat-resistant material
Exterior finishChrome
Motorcycle Compatibility
| Year | Make | Model | Power / Engine | Variant |
|---|---|---|---|---|
| — | Roketa | GY6 50cc/60cc/80cc | 4-stroke 139QMB | Short-case engine |
| — | SunL | GY6 50cc/60cc/80cc | 4-stroke 139QMB | Short-case engine |
| — | TaoTao | GY6 50cc/60cc/80cc | 4-stroke 139QMB | Short-case engine |
Always compare the part number, dimensions, specifications, and compatibility details with your original part before ordering.
