NCY Compression Spring (2000rpm ); GY6
NCY Compression Spring (2000rpm ); GY6
$26.22
10 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: NCY’s 2000rpm Compression Spring fits GY6 engines and will affect both the pressure that engages the belt and when the CVT transmission switches from low to high gear.A 1000rpm spring will go into a higher gear than a 2000rpm spring.Specifications:Spring length: 154mmSpring ID: 48.5mm, OD: 58.5mmWire Gauge: 4.5mmCompatibility:157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:157QMJ161QMK152QMI1P61QMKYN1P57QMJ1P52FMI154FMIJJ157QMJ1P57QMJBN157QMJBN161QMK-AOther QMJ, QMK, and QMI modelsDon’t see your engine listed? If the engine code includes “QM” or “FM”, this product is compatible with your vehicle.About NCY:NCY is the aftermarket performance parts leader for most popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, and GY6 / QMB powered scooters. Made in Taiwan with strict quality standards since 1997, NCY is ISO 9001 certified.Made in Taiwan.This product is intended for off-road use only.This product is not intended for use on public roads or land.This product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing.*Performance upgrades are considered racing parts and are not covered by warranty.
SPECIFICATIONS: Spring length: 154mmSpring ID: 48.5mm, OD: 58.5mmWire Gauge: 4.5mm
COMPATIBILITY: 157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:157QMJ161QMK152QMI1P61QMKYN1P57QMJ1P52FMI154FMIJJ157QMJ1P57QMJBN157QMJBN161QMK-AOther QMJ, QMK, and QMI modelsDon’t see your engine listed? If the engine code includes “QM” or “FM”, this product is compatible with your vehicle.About NCY:NCY is the aftermarket performance parts leader for most popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, and GY6 / QMB powered scooters. Made in Taiwan with strict quality standards since 1997, NCY is ISO 9001 certified.Made in Taiwan.This product is intended for off-road use only.This product is not intended for use on public roads or land.This product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing.*Performance upgrades are considered racing parts and are not covered by warranty.
157QMJ ENGINES: based 125cc / 150cc / 169cc engines with the following engine codes:157QMJ161QMK152QMI1P61QMKYN1P57QMJ1P52FMI154FMIJJ157QMJ1P57QMJBN157QMJBN161QMK-AOther QMJ, QMK, and QMI modelsDon’t see your engine listed? If the engine code includes “QM” or “FM”, this product is compatible with your vehicle.About NCY:NCY is the aftermarket performance parts leader for most popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, and GY6 / QMB powered scooters. Made in Taiwan with strict quality standards since 1997, NCY is ISO 9001 certified.Made in Taiwan.This product is intended for off-road use only.This product is not intended for use on public roads or land.This product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing.*Performance upgrades are considered racing parts and are not covered by warranty.
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 125cc, 150cc, GY6
- Engine Code: 157QMJ
- Fitment Notes: Performance, CVT, Auto Transmission
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: Will this fit a 157QMJ engine?
A: This SKU is listed as compatible with 157QMJ engine-code fitment. Always compare your original part and scooter details before ordering.
Q: Is this for 125cc scooters?
A: This SKU is listed with 125cc engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 0.375 lbs |
|---|---|
| Dimensions | 7 × 2.5 × 2.5 in |
| Condition | New |
|---|
NCY 2000rpm Performance Compression Spring
Take control of your CVT’s shift logic with the NCY 2000rpm Compression Spring. This "contra spring" is the most aggressive tuning option for the GY6 engine platform, designed to keep your transmission in a lower gear ratio longer. By increasing the pressure on the driven pulley, this spring forces the engine into its peak power band, providing the explosive off-the-line acceleration and heavy-duty hill-climbing torque that standard springs can't deliver.
Performance Tuning Dynamics
- 2000 RPM Rating: The stiffest common tuning weight, ideal for "racing" setups or heavy riders who need to eliminate "bogging" during uphill climbs or rapid acceleration.
- Enhanced Belt Grip: Provides significantly higher side-pressure on the CVT belt, virtually eliminating belt slip and ensuring every bit of horsepower reaches the rear wheel.
- Rapid Downshifting: Engineered for lightning-fast transmission response when you snap the throttle open, perfect for aggressive urban filtering and overtaking.
- Heat-Treated Steel: Manufactured with NCY’s signature high-tensile steel to maintain its spring rate and tension even under the extreme temperatures of long-distance riding.
Comprehensive Fitment Guide
This spring is a direct performance upgrade for GY6-based 125cc, 150cc, and 170cc engines:
| Brand / Engine Family | Compatible Model Series |
|---|---|
| Genuine Scooter Co. | Buddy 125, Buddy 150, Buddy 170i, Hooligan 170i |
| Chinese GY6 (157QMJ) | TaoTao, Wolf, Icebear, Jonway, ZNEN (150cc Models) |
| Engine Codes | 152QMI, 157QMJ, 161QMK, 1P57QMJ, and more |
Technical Specifications
- Spring Rate: 2000 RPM (Red)
- Total Length: 154mm
- Internal Diameter: 48.5mm | Outer Diameter: 58.5mm
- Wire Gauge: 4.5mm
Mechanic's Note: This is a racing-grade spring.
Tuning Tip: A 2000rpm spring will significantly increase your cruising RPMs. If you find your engine "screaming" too high at top speed, consider pairing this with slightly heavier NCY Roller Weights to balance the shift curve.
Installation Tip: Be extremely careful when removing the large clutch nut; the spring is under high tension and can fly off if not secured with a Clutch Compression Tool!
SKU: 1200-1028
Vendor: NCY
157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:
| 157QMJ | 161QMK | 152QMI | 1P61QMK |
| YN1P57QMJ | 1P52FMI | 154FMI | JJ157QMJ |
| 1P57QMJ | BN157Q |
