NCY Secondary Slider Sheave - GY6 125/150/169cc

This NCY performance secondary slider sheave helps your GY6-powered scooter respond more crisply when you roll on the throttle or accelerate out of a corner. Designed for compatible 125cc, 150cc, and most 161QMK 169cc rear pulley assemblies, it combines a precision-machined belt surface with selectable guide-pin tracks to tune CVT shifting and backshifting to your setup.

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

Key Features

• Dual guide-pin profiles: Straight and curved tracks provide different shift characteristics for tuning the transmission's response.
• Smoother belt travel: Precision-machined geometry helps reduce binding and supports predictable CVT ratio transitions.
• Responsive backshifting: Revised track geometry helps the transmission respond as load and throttle demand change.
• Improved power delivery: Designed to support belt grip and torque transfer during hard acceleration and climbs.
• Pre-installed O-rings: Supplied with rubber O-rings already fitted.
• Taiwan-made NCY quality: Manufactured under ISO 9001 quality-control standards.

Technical Specifications

• Brand: NCY
• Part number: 1200-1034
• Part type: Performance rear secondary slider / sliding sheave
• Slider plate outside diameter: 141.84 mm
• Center sleeve inside diameter: 34 mm
• Center sleeve outside diameter: 43 mm
• Center sleeve height: 47 mm
• Guide tracks: Straight and curved profiles
• Included: Pre-installed rubber O-rings
• Country of origin: Taiwan

Compatibility

Confirm fitment by engine code and pulley measurements. Compare the 141.84 mm plate diameter and center-sleeve dimensions with your existing assembly. Engine code or advertised displacement alone does not guarantee compatibility.

Performance upgrades are not covered under warranty.

• Dual straight and curved guide-pin tracks for CVT tuning
• Pre-installed rubber o-rings included
• 141.84mm OD slider plate
• Compatible GY6 125/150cc and most 161QMK 169cc applications; verify pulley dimensions
• ISO 9001 certified, Made in Taiwan

Brand: NCY; Part number: 1200-1034; Type: Performance secondary slider / sliding sheave; Plate OD: 141.84 mm; Center sleeve ID: 34 mm; Center sleeve OD: 43 mm; Center sleeve height: 47 mm; Guide tracks: Straight and curved; Includes: Pre-installed rubber O-rings; Applications: Compatible GY6 125/150cc and most 161QMK 169cc assemblies, verify dimensions; Origin: Taiwan; Off-road use only

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