NCY Golden Performance Variator Pulley - 139QMB Genuine 50cc

This NCY PTFE-coated variator pulley helps your scooter's CVT transition smoothly and quickly as you accelerate, adding lightweight aluminum-alloy construction and a distinctive gold low-friction finish to your transmission. The coated roller tracks help keep debris from building up and reduce roller wear, making this pulley a useful starting point for tuning a compatible 139QMB or Genuine 50cc setup.

Key Features

• Gold PTFE-coated roller tracks: Promote smooth weight movement and help reduce debris accumulation, flat-spot wear, and improve acceleration due to lower friction than stock.
• Lightweight aluminum alloy: Housing is lighter than stock, improving acceleration due to lower rotating mass.
• 89mm pulley diameter: For matching small-scooter variator configurations.
• 16x13 tuning options: Uses compatible 16x13mm roller weights or sliding weights, sold separately.
• Individual pulley: Variator guide slides and roller/sliding weights are not included.

Technical Specifications

• Brand: NCY
• Part number: 1200-1050
• Manufacturer part number: 615A01DIOYE
• Product type: Variator pulley / movable pulley housing
• Material: Aluminum alloy
• Coating: Gold PTFE
• Inner diameter: 20 mm
• Outer diameter: 89 mm
• Height: 32.4 mm
• Weight: 5.29 oz
• Weight size: 16x13 mm, sold separately
• Guide slides: Sold separately
• Country of origin: Taiwan

Compatibility

Check the original pulley dimensions, variator components, and weight size before ordering. An engine code containing “QM” or “FM” alone does not establish compatibility. Select weight mass to suit your engine and CVT setup.

Recommended Components

Variator guide slides are sold separately. See Dr. Pulley guide slide set 1200-1261 and verify compatibility with your ramp plate.

Roller weights or sliding weights are also sold separately. Browse 16x13mm variator weights to complete your setup. This product is not a complete variator kit.

This product is intended for off-road use only. This product is not intended for use on public roads or land.

Performance upgrades are considered racing parts and are not covered by warranty.

• Gold low-friction PTFE-coated roller tracks improve acceleration versus stock, promote smooth weight movement and reduce debris accumulation and flat-spot wear
• Lighter-than-stock aluminum-alloy housing improves acceleration through reduced rotating mass
• 89 mm pulley diameter; 20 mm inner diameter and 32.4 mm height
• Uses compatible 16x13 mm roller weights or sliding weights, sold separately
• Variator guide slides sold separately; recommended Dr. Pulley guide slide set 1200-1261 with compatible ramp plate; not a complete variator kit

Brand: NCY; Part number: 1200-1050; MPN: 615A01DIOYE; Type: variator pulley / movable pulley housing; Material: lighter-than-stock aluminum alloy; Coating: gold low-friction PTFE; Performance benefits: quicker, smoother CVT transitions and improved acceleration through reduced friction and rotating mass; Inner diameter: 20 mm; Outer diameter: 89 mm; Height: 32.4 mm; Weight: 5.29 oz; Weight size: 16x13 mm, weights sold separately; Guide slides: sold separately; Recommended guide slide set: Dr. Pulley 1200-1261, verify ramp-plate compatibility; Origin: Taiwan; Off-road use only

Compatible 139QMB/QMB139 GY50 50cc 4T and 80cc builds; 139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB and 147QMD with matching variator dimensions; Genuine Buddy 50 and RoughHouse 50; compatible ZNEN, Trailmaster, Tao Tao and other Chinese-make configurations; verify 20 mm bore, 89 mm diameter, 32.4 mm height and 16x13 mm weight setup; off-road use only