Product Description
Smooth Shifting: NCY Ball-Bearing Secondary Spring Seat
Eliminate CVT binding and "spring twist" with the NCY Secondary Spring Seat. In a stock GY6 setup, the torque spring must twist as it compresses, creating internal friction that slows down your transmission's response. This NCY upgrade features an integrated ball-bearing assembly that allows the spring to rotate freely, ensuring lightning-fast downshifts and much smoother overall belt operation.
Technical Performance Features
- Anti-Binding Technology: The bearing seat allows the secondary spring to decompress without torsional resistance, providing consistent "pop" and more responsive acceleration.
- Reduced Belt Heat: By smoothing out the opening and closing of the rear pulley, this seat helps reduce parasitic drag and excessive heat buildup in the CVT belt.
- Hardened Steel Construction: Engineered to withstand the high-RPM environment of performance GY6 builds, ensuring the bearings stay seated even under extreme spring tension.
- Improved Downshifting: Noticeably improves the scooter's ability to "find the right gear" when coming out of corners or hitting inclines.
Comprehensive Fitment Guide
This seat is designed for GY6-based 125cc to 170cc engines and is a direct-fit performance upgrade for:
| Brand | Compatible Models |
|---|---|
| Genuine Scooter Co. | Buddy 125, Buddy 150, Buddy 170i, Hooligan 170i |
| Lance / SYM | Cali Classic 125/150, Havana Classic, PCH 150 |
| Tao Tao / Wolf | Lancer 150, Quantum 150, Lucky 150, EX-150 |
| Engine Codes | 152QMI, 157QMJ, 161QMK, 1P57QMJ, and more |
157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:
| 157QMJ | 161QMK | 152QMI | 1P61QMK |
| YN1P57QMJ | 1P52FMI | 154FMI | JJ157QMJ |
| 1P57QMJ | BN157QMJ | BN161QMK-A | Other QMJ, QMK, and QMI models |
Don't see your engine listed? If the engine is 125-200cc and the engine code includes "QM" or "FM", this product is compatible with your vehicle.
Technical Specifications
- Bearing Seat ID: 45.4mm
- Bearing Seat OD: 57.5mm
- Groove Width: 1.75mm
- Included Hardware: High-tension bearings and bearing seat
Mechanic's Note: This is a "must-have" upgrade when installing a stiffer 1000 or 1500 RPM torque spring. Because the spring is harder to compress, the binding effect is much more pronounced.
