{"product_id":"m12x1-25-flange-nut-gy6-125-150cc-clutch-flywheel","title":"M12x1.25 Flange Nut - GY6 125\/150cc Clutch \u0026 Flywheel","description":"\u003cp\u003eThis M12x1.25 Flange Nut is a high-strength OEM replacement specifically designed for the GY6 engine platform. Featuring a smooth integrated flange base, this nut provides a wider surface area for more consistent clamping force, making it essential for securing high-vibration rotating components like the clutch bell and flywheel. Primary Applications: Clutch Assembly: Secures the clutch bell\/assembly to the transmission output shaft. Flywheel\/Magneto: Holds the flywheel in place on the crankshaft (located between the flywheel and cooling fan). Technical Specifications: Thread Size: M12 x 1.25 (Fine Thread) Socket Size: 17mm Outer Diameter (Base): 23.5mm Total Height: 8.85mm Material: Zinc-plated Steel Engine Compatibility: Designed for 4-stroke Chinese engines (GY6), including 125cc, 150cc, and 169cc variants. Fits engines with the following codes: 157QMJ \/ 1P57QMJ 152QMI \/ 1P52QMI 161QMK \/ 1P61QMK Other: BN157QMJ, JJ157QMJ, and generic QMI\/QMJ clones. 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 code includes \"QM\" or \"FM\", this product is compatible with your vehicle. Tech Tip: These nuts are often \"one-time use\" in high-performance applications as the threads can stretch under the high torque required (approx 40-45 ft-lbs). Always use a drop of medium-strength thread locker to ensure the nut does not back off during operation. About Scooterworks: Since 1989, Scooterworks has been the premier source for specialized scooter hardware. We stock genuine and high-quality aftermarket components for brands like Genuine, Wolf, TaoTao, and Vespa. Original Parts For Scooters SKU 175-33\u003c\/p\u003e","brand":"prima","offers":[{"title":"Default Title","offer_id":48045157449915,"sku":"1100-1118","price":1.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0719\/1340\/6651\/files\/1100-1118_af7c8a60-c6dc-4c45-a4ce-60b775a1feb2.jpg?v=1783052747","url":"https:\/\/thriftyscooters.com\/products\/m12x1-25-flange-nut-gy6-125-150cc-clutch-flywheel","provider":"Thrifty Scooters","version":"1.0","type":"link"}