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Whether you are navigating stop-and-go traffic or racing on the track
Key Product Features
5mm sprocket/disc bolt spacing and 60mm rim bolt spacing — M6x1
Specifically engineered for high-performance karting and custom scooter drivetrains
and modern design
Naraku GY6 63mm Big Bore Kit malossi Whether you are navigating stop-and-goThe Naraku 63mm Forged Piston Big Bore Kit fits GY6 4 stroke engines, and increases your displacement to 180cc! Specifications: Bore: 63mm Outer Sleeve Diameter: 64. 9mm Displacement Increase to 180cc Overall Height (cylinder): 90mm NOTE: Crankcase modifications are needed for this cylinder kit. Compatibility: 157QMJ based 125cc 150cc 169cc engines with the following engine codes: 157QMJ 161QMK 152QMI 1P61QMK YN1P57QMJ 1P52FMI 154FMI JJ157QMJ 1P57QMJ