NCY Cylinder Head 50mm 81cc 2V (139QMB)
Description: NCY Cylinder Head 50mm 81cc 2V for 139QMB 49/50cc 4-stroke engines. Great quality alloy cylinder head designed to work seamlessly with NCY Cylinder 52mm 88cc (Part# 1100-1248) big bore kit. Give your 139QMB the power to handle today's city traffic.
NOTE: Most stock 139QMB cylinder head's valve height is 69mm which comes standard with its 69mm rockerarm. This NCY Cylinder Head's valve height is 64mm and will work only with a 64mm rockerarm only. If you need a set of 64mm rockerarm see Part# 1100-1326 sold separately.
Includes the following Cylinder Head and Valves Assembly.
• 1x Cylinder Head Stud Space: 50mm / H: 60mm / Intake Port: 24mm / Exhaust Port: 22mm
• 2x Valves: 21.5x64mm Intake / 19x64mm Exhaust / Stem: 5mm / (w/intake valves) H: 66.1<67.3mm
• 6mm Intake Threads
• 6mm Exhaust Threads
• Made in Taiwan
• Fit 6mm Intake Studs
• Fit 6mm Exhaust Studs
• Fit 64mm Rocker Arm Assembly 2V
• Fit 50mm Stud Spacing /Diagonal 70.5mm
• Fit Cylinder 50mm to 52mm 2V
• Fit Dowel Pin Set (8x14mm)
• Fit QMB 49/50cc+
Supported Models: GY6 139QMB 49cc-50cc 4-Stroke engines, Filly 50, Kymco 50, QLink 50, SYM 50, TaoTao 50
Item Weight & Product Dimensions:
• 2.194 Pounds | 5.322" (L) x 5.290" (W) x 2.610" (H)