GY6 125cc-171cc 1500 RPM Yellow Contra Spring
ITEM# TT-26594
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Description
1500 RPM Yellow Contra Spring for 125cc to 171cc GY6 Scooters
The 1500 RPM Yellow Contra Spring is a performance upgrade for the rear clutch pulley on GY6 scooters between 125cc and 171cc. Its firmer build helps keep belt pressure up, which cuts down on slippage when you accelerate. The result is a higher shift point on the CVT, so the engine can remain in its power band and respond more quickly. It's one of the GY6 scooter parts you can use to improve how your scooter performs.
Performance Benefits
This contra spring is built to deliver more torque by holding firm pressure on the belt during hard acceleration. That added side pressure helps the belt grip more securely, which reduces slip and makes acceleration more efficient. You should find the scooter reaches its power band sooner, giving a livelier ride.
Compatibility Details
This spring is made for a broad range of engines that follow GY6 design principles, so it suits many scooter models. It's a good option if you want to swap out the stock spring for a performance version that fits into your existing setup without extra modifications.
Specifications
- RPM Rating: 1500 RPM
- Color: Yellow
- Wire Diameter: 4.2mm
- Inner Diameter: 48.5mm
- Free Length: 154.0mm
- OEM Part Number: 660A09GY615
- Fits: GY6 150cc (157QMJ) driven pulley; also listed for GY6 125cc-171cc engines and Buddy 125, 150 and 170i
Fitment
Fits:
- GY6 150cc (157QMJ)
- Buddy 125, 150 and 170i
- SYM, Wolf, Ice Bear, Jonway, TaoTao, ZNEN, Bintelli and BMS GY6 125-150cc scooters (listed as many models, engine code 157QMJ or similar)
How to choose: Compare the engine code on your engine case, such as 157QMJ, 152QMI or 161QMK, against the list above.
Where it goes: part #4 on the driven pulley diagram for the GY6 150cc (157QMJ).
Other versions: If you need a different rating, see the Compression Spring GY6 1000 RPM (Standard): Compression Spring (GY6), 1000 RPM (Standard). For engines from 125cc to 200cc, the GY6 125-200cc 2000 RPM Compression/Contra Spring is available here: GY6 125-200cc 2000rpm Compression / Contra Spring.
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