GY6 161QMK Performance Secondary Slider Sheave

Performance Secondary Slider Sheave for GY6 Engines

The Secondary Slider, also known as the Sliding Sheave, is designed for GY6 125cc and 150cc engines, as well as most 161QMK models. This performance component serves as a replacement for the stock sheave, improving the efficiency of belt movement across the RPM range. It is one of the GY6 scooter parts that improves acceleration, smooth backshifts, and immediate throttle response.

Benefits of Upgrading Your Secondary Slider

This performance sheave features dual slot profiles, allowing customization of the RPM torque curve to match your riding style. Its precision-machined design eliminates belt hang-up and slippage, ensuring consistent belt travel without dead spots. Additionally, optimized backshifting guarantees quick gear ratio adjustments for improved acceleration during corner exits.

Construction and Features

Engineered with two distinct guide pin tracks, this sheave lets users select between quick linear shifts or a more gradual engagement. The aggressively angled slits improve CVT ratio transitions, reducing performance lag. Pre-installed high-temperature rubber O-rings simplify installation, making it a straightforward swap into your scooter.

Specifications

• Slider Plate OD: 141.84mm
• Funnel ID: 34mm
• Funnel OD: 43mm
• Funnel Height: 47mm
• Includes: Pre-installed rubber O-rings
• Manufacturer: ISO 9001 Certified, Taiwan

Fitment

This part is compatible with GY6 engines including 125cc, 150cc, and most 161QMK models. Ensure compatibility by verifying the pulley diameter.

• 157QMJ: Most 161QMK; 152QMI; Most 1P61QMK
• YN1P57QMJ: 1P52FMI; 154FMI; JJ157QMJ
• 1P57QMJ: BN157QMJ; Most BN161QMK-A; Other QMJ, QMK, QMI models

Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.

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