NCY 27mm GY6 125-232cc Exhaust Gasket: 27x3.5mm

Ensure a perfect, airtight seal between your cylinder head and header pipe with the NCY Performance Exhaust Gasket. Constructed from a high-quality metal and fiber composite, this gasket is designed to deform slightly upon installation, filling in surface irregularities to prevent power-robbing exhaust leaks. Whether you are installing a racing exhaust or performing routine maintenance, this is the gold standard for GY6 engine reliability.

Performance Features

• Premium Composite Material: Metal and fiber core provides superior heat resistance and sealing capabilities compared to standard fiber gaskets.
• Universal Fitment: Engineered specifically for the GY6 engine platform used in hundreds of scooter models worldwide.
• Precision Dimensions: Features a 27mm inner diameter and flexible bolt spacing to accommodate various aftermarket exhaust manifolds.
• ISO 9001 Certified: Manufactured by NCY in Taiwan, ensuring strict quality control and a perfect fit every time.

Detailed Model Fitment

This gasket is compatible with nearly all 125cc, 150cc, 169cc, 171cc, and 232cc GY6-based engines. This includes, but is not limited to:

Engine Code Reference

If your engine is 125cc-232cc and the engine code includes "QM" or "FM", this product is likely compatible. Verified codes include:

157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A.

Technical Specifications

• Port Inner Diameter: 27mm
• Bolt-to-Bolt Spacing: 45mm – 51mm
• Gasket Thickness: 3.5mm
• Quantity: Sold Individually
• Origin: Made in Taiwan
• SKU: 0500-1009

Tech Tip: Exhaust gaskets are "one-time use" components. Once they are crushed to form a seal, they cannot be effectively reused. Always install a fresh NCY gasket whenever you remove your exhaust pipe to avoid "popping" noises and lost backpressure.