Ball-Bearing Secondary Spring Seat for GY6 & QMK 125-170cc

Ball-Bearing Secondary Spring Seat for GY6 125-170cc Scooters

This ball-bearing secondary spring seat is made for GY6 and QMK engines in the 125cc to 170cc range. Its bearing lets the torque spring turn freely, which stops it from binding and twisting. That helps the CVT respond better and allows quicker downshifts. If you are upgrading your torque springs, you may also want to look at these GY6 150cc scooter parts.

Performance Benefits

The ball-bearing setup cuts down on parasitic drag and keeps the belt from building up as much heat while you ride. Over time, this helps the CVT system perform better and last longer. Paired with stiffer torque springs rated at 1000 or 1500 RPM, it helps the drivetrain work more efficiently.

Construction Details

This part is made from yellow zinc-plated hardened steel so it can handle everyday riding. The assembly comes with a seat ring for the bearing and the ball bearings themselves, giving smooth movement and a secure fit. It is a straightforward option for anyone wanting to improve their scooter's performance.

Specifications

• Material: Hardened steel
• Size: Bearing Seat ID: 45.4mm, Bearing Seat OD: 57.5mm, Groove Width: 1.75mm
• Color: Yellow zinc plated
• Includes: Bearing seat ring, ball bearings
• Fits: GY6 150cc (157QMJ) driven pulley secondary spring seat, 45.4mm ID x 57.5mm OD

Fitment

Fits:

• GY6 150cc (157QMJ)

How to choose: Check that the bearing seat ID is 45.4mm and the OD is 57.5mm to match your rear pulley's spring seat, and confirm the groove width is 1.75mm.

Where it goes: part #5 on the driven pulley diagram for the GY6 150cc (157QMJ).

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