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Ships within 48 hours · Estimated delivery Aug 31 - Sep 5
Speed Rating: 59S (112 mph)
Great quality alloy cylinder head designed to work seamlessly with 1100-1248 88cc cylinder kit
Mechanic's Note: If your variator is worn out
Compatible Engine Codes: 139QMA
Wire Gauge: 4
NCY Performance Secondary Slider Sheave | GY6 161QMK Genuine Stella Auto Speed Rating: 59S (112 mph)The NCY Secondary Slider (Sliding Sheave) is a performance rear converter plate for GY6 125cc and 150cc and most 161QMK engines (verify Pulley diameter). Engineered to replace the restrictive stock sheave, this precision machined component optimizes belt movement across the entire RPM range for faster acceleration, smoother backshifts, and immediate throttle response. Why Upgrade to a Performance Secondary Slider? Dual Slot Profiles for Custom Tuning:
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