GY6B Variator Back Plate

GY6B Variator Back Plate for 150cc GY6B Engines

The GY6B Variator Back Plate is a core part for 150cc GY6B 4-stroke engines used in many scooters. It helps the automatic transmission run smoothly, which has a direct effect on acceleration and top speed. It belongs to the scooter variator and roller weight range, and replacing a worn one can help correct the sluggish performance that worn rollers often cause.

What This Part Does

This back plate supports the transmission of your scooter and affects how power reaches the wheel. As parts age, they can wear, which may reduce acceleration and lower top speed. Swapping in a new plate helps keep power delivery steady and throttle response quick.

Specifications

• Inner Diameter: 17mm
• Outer Diameter: 89mm
• Fits: 150cc GY6B 4-stroke ZNEN engines (17mm inner, 89mm outer diameter)

Fitment

Fits:

• Lance Phoenix
• Flyscooters Cadenza
• ZNEN ZN150T-18
• Xingyue ITA-150
• Motorino Cassini
• CMS Prodigy
• BMS Pathfinder (BN157QMJ-3A)

How to choose: Check that the 17mm inner and 89mm outer diameter match your original variator back plate, and confirm that your engine is a 150cc GY6B 4-stroke.

Shop more: Variators and Roller Weights for Scooters · Scooter Parts