NCY Secondary Slider (GY6)
NCY Secondary Slider (GY6)
$62.69
1 in stock
*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
Orders placed by 1pm EST on weekdays ship the same day.
Product Details
DESCRIPTION: Do you have a tuned engine that is not putting the power on the ground? NCY rear converters have aggressively angled slits to provide power where you need it and smooth transitions between belt positions with minimal hang up.
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: GY6
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Is this for GY6 scooters?
A: This SKU is listed with GY6 engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 1 lbs |
|---|---|
| Dimensions | 7 × 8 × 2 in |
| Condition | New |
|---|
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: Features two distinct sets of guide pin tracks (straight and curved) allowing you to fine-tune your RPM torque curve based on your riding style and setup.
- Eliminate Belt Hang-Up & Slip: NCY's precision-machined geometry ensures smooth, predictable belt travel without speed dead-spots or binding.
- Optimized Backshifting: Redesigned pin tracks force the transmission into the correct gear ratio instantly for maximum corner-exit acceleration.
- Maximum Torque Transfer: Prevents drive belt slippage under heavy load or uphill climbs, delivering more power directly to the rear wheel.
Key Features
- Dual Guide Pin Tracks: Two slot angles — choose between rapid linear shift-out or smooth stock-like engagement.
- Aggressively Angled Slits: Re-engineered geometry eliminates performance lag and smooths CVT ratio transitions.
- Pre-Installed O-Rings: High-temp rubber o-rings fitted at the factory for a clean, drop-in installation.
- GY6 Platform Fitment: Tailored for 152QMI and 157QMJ-based 125cc, 150cc, and most 161QMK 169cc "200" engines - verify pulley diameter.
- ISO 9001 Certified: Precision manufactured in Taiwan by NCY to rigorous quality control standards.
Technical Specifications
- Slider Plate OD: 141.84mm
- Funnel ID: 34mm
- Funnel OD: 43mm
- Funnel Height: 47mm
- Includes: Pre-installed rubber o-rings
- Manufacturer: NCY (ISO 9001 Certified, Taiwan)
Fits 157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:
| 157QMJ | Most 161QMK | 152QMI | Most 1P61QMKÂ |
| YN1P57QMJ | 1P52FMI | 154FMI | JJ157QMJ |
| 1P57QMJ | BN157QMJ | Most BN161QMK-A | Other QMJ, QMK, QMI models |
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This product is intended for off-road/racing use only. Not legal for use in California on pollution-controlled vehicles. Performance upgrades are not covered under warranty.
