NCY Cylinder Head 61mm 171cc 2V 27.5/23.5 Fit 54mm (GY6)

Description: NCY 61mm Cylinder Head Wear-Resisting 2 valves with a larger 27.5 intake / 23.5 exhaust ports will allow your GY6 cylinder to breathe better! Works great with NCY Cylinder 61mm 171cc Big Bore Kit w/Cast Piston. A 10mm diameter head allows for extra clearance between your wrench and the head for easy access. When changing a cylinder kit or an exhaust, it's a clever idea to pick up a few extra 8mm Studs + Nuts, since these can easily need replacing and bring your project to a grinding halt while you wait. These 6mm nuts are also kool-looking add-ons (sold separately).

Specifications:

Includes the following Cylinder Head and installed Valves Assembly.

•    1x Cylinder Head Stud Space: 54mm / H: 60mm / Intake Port: 26.5mm / Exhaust Port: 25mm
•    2x Valves: 27.5x66mm Intake / 23.5x65.6mm Exhaust / Stem: 5mm / (w/intake valves) H: 67<69.3mm
•    Intake Manifold Bolt-to-Bolt Space: 45mm
•    Intake Threads: M6
•    Exhaust Bolt-to-Bolt Space: 45<51mm
•    Exhaust Threads: M8
•    Made in Taiwan
•    Fit Intake Studs: M6 / Nuts: M6 / Socket: 10mm
•    Fit Exhaust Studs: M8 / Nuts: M8 / Socket: 12mm
•    Fit Cylinder Studs: 187mm 195mm / Nuts: M8 / Washers: M8 / Side Bolts: M6 / Socket: 12mm
•    Fit 54mm Stud Spacing (A-Block)
•    Fit 54mm Rocker Arm 2V Assembly
•    Fit Crankshaft 57.8mm +3mm
•    Fit Dowel Pin Set (10x14mm)
•    Fit Cam Chain 45 (90) links
•    Fit Chain Guide (standard)
•    Fit 54mm Cylinder 58.5mm to 63mm 2V
•    Fit GY6 125/150cc+
•    Optional: cut plastic fan shroud for best fitment

Supported Models: GY6 Crankcase (Part# 1100-1418); GY6 152QMI 157QMJ Chinese Scooter, ATV, Genuine Buddy, Kymco, Ruckus, Vento

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Item Weight & Package Dimensions:
•    2.4375 Pounds | 7.5" (L) x 6.875" (W) x 3" (H)