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Measure the stud spacing on your cylinder head to ensure it's a Series A engine (Series A spacing= 54mm
Outer Diameter (pulley): 142mm (5
check your airbox and exhaust clearance
Mechanic's Note: This axle is specifically designed for use with NCY Front End Kits (Slammed
Blue Line Variator Outer Drive Face - GY6 pkg Measure the stud spacing onBlue Line 113. 5mm Fixed Outer Drive Face for 150cc and 125cc GY6 4 stroke engines. Compatible with 115mm variators. Original Parts For Scooters SKU 164 312 Specifications: Inner Diameter: 13. 5mm Number of Splines: 19 Outer Diameter: 113. 5mm Compatibility: 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
