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Cylinder Head Dowel Pin for 150cc and 125cc GY6 4-stroke QMJ152 157 QMI152 157 engines. (ID: 8.5mm, OD: 10mm, L: 15.8mm) Specs Inner Diameter: 8.5mm Outer Diameter: 10mm Length: 15.8mm Supported Models GY6 QMI QMJ 152 157, Various unlisted makes models, Vento Phantom
Airsal 46mm Big Bore Cylinder Kit for Kymco and SYM Vertical 2-Stroke Engines. Kit includes cylinder, piston, rings, piston pin, cir clips, gaskets and exhaust studs. Nikasil lined cylinder and double ring piston for longevity. When used in conjunction with a stock crankshaft the total displacement comes out to 69.4cc. Suitable for use with stock…
Airsal 70cc Liquid Cooled Piaggio Big Bore Cylinder and Head Kit. Kit includes cylinder, head, piston, rings, piston pin, cir clips, gaskets and hardware. When used in conjunction with a stock crankshaft the total displacement comes out to 69.7cc. Suitable for use with stock or performance exhaust. Fits models with the Liquid Cooled Piaggio engine…
Athena 47.6mm Air Cooled Horizontal Minarelli Yamaha Jog Big Bore Cylinder and Head Kit. Kit includes cylinder, cylinder head, piston, ring, piston pin, cir clips, head gasket, base gasket, exhaust gasket and carbon fiber reeds. When you use this Athena 47.6mm Big Bore Kit you will increase your total displacement to 70cc! Fits Yamaha Zuma…
Athena 47.6mm (70cc) Air Cooled Piaggio 2 Stroke Big Bore Cylinder and Head Kit. Kit includes aluminum cylinder, cylinder head, piston, ring, piston pin, cir clips, head gasket, base gasket, exhaust gasket and carbon fiber reeds. When you use this Athena 47.6mm Big Bore Kit you will increase your total displacement to 70cc! Fits the…
Athena 47.6mm Honda Dio-SR Big Bore Cylinder and Head Kit. Kit includes cylinder, cylinder head, piston, ring, piston pin, cir clips, head gasket, base gasket and exhaust gasket. When you use this Athena 47.6mm Big Bore Kit in conjunction with your stock 41.4mm crankshaft you will increase your total displacement to 70cc! Fits Honda Elite…
Athena 47.6mm Liquid Cooled Horizontal Minarelli Big Bore Cylinder and Head Kit. Kit includes cylinder, cylinder head, piston, ring, piston pin, cir clips, head gasket, base gasket, exhaust gasket, o-rings and carbon fiber reeds. When you use this Athena 47.6mm Big Bore Kit you will increase your total displacement to 70cc! Please see our Warranty…
Athena 47.6mm Air Cooled Vertical Minarelli Yamaha Zuma Big Bore Cylinder and Head Kit. Kit includes cylinder, cylinder head, piston, ring, piston pin, cir clips, head gasket, base gasket, exhaust gasket and carbon fiber reeds. When you use this Athena 47.6mm Big Bore Kit you will increase your total displacement to 70cc! Fits Pre-Bug Eye…
Ban Jing 58.5mm Ceramic Big Bore Kit with Nikasil Cylinder Coating for 150cc and 125cc GY6 4-stroke engines and engine based vehicles. Easy to install! Just bolt on with no crankcase modifications needed. Specs Bore: 58.5mm Overall Height (cylinder): 90mm Heat Resistant Ceramic Coating Nikasil Interior for Reduced Friction and Low Wear  Supported Models GY6…
Want to unleash all the power your Honda Grom can handle? Koso s 170cc Big Bore Kit (MB623002) is the perfect addition for you! The kit includes a ceramic coated cylinder, 61mm forged piston, rings, pin, gasket kit and banjo bolts. Its compression ratio of 11.5 to 1 will allow you to still use premium…
The Koso 4V Cylinder Head kit for the Honda Grom and Honda Monkey is the ideal engine part to complete the Koso Big Bore kit. Because of its unique 4 valve design, the air flow and performance are increased. This newly designed head is the perfect addition for those who desire more power and torque….
Naraku 50cc SYM and Peugeot 4-stroke 42mm Big Bore Cylinder Kit. Kit includes cylinder, piston, rings, piston pin, cir clips, head gasket, base gasket, exhaust gasket and cam chain tensioner gasket. This is a drop in cylinder kit, no crank case modifications required! When used in conjunction with a stock stroke of 46mm the total…
Naraku 50cc QMB139 4-stroke 47mm Big Bore Cylinder Kit. Kit includes cylinder, piston, rings, piston pin, cir clips, head gasket, base gasket, exhaust gasket and cam chain tensioner gasket. This is a drop in cylinder kit, no crank case modifications required! When used in conjunction with a stock stroke of 41.4mm the total displacement comes…
Naraku 50cc Air Cooled Horizontal Minarelli Replacement Cylinder Kit. Kit includes cylinder, low-friction molybdenum coated piston, piston rings, 10mm piston pin, cir clips, head gasket, base gasket and exhaust gasket.Fits the following models and more with horizontal Minarelli engine: Adly: Thunder Bike 50 Aprilia: Scarabeo 50 (93-06), SR50 (94-02) Benelli: Pepe 50, Andretti 50 CPI:…
Naraku 70cc Air Cooled Horizontal Minarelli Big Bore Cylinder Kit. Kit includes cylinder, low-friction molybdenum coated piston, piston rings, 10mm piston pin, cir clips, head gasket, base gasket and exhaust gasket.When used in conjunction with a stock crankshaft the total displacement comes out to 70cc. Suitable for use with stock or performance exhaust. Can be…
Naraku 70cc Liquid Cooled Pentagonal Piaggio Big Bore Cylinder Kit. Kit includes cylinder, low-friction molybdenum coated piston, rings, piston pin, cir clips, head gasket and base gasket. When used in conjunction with a stock crankshaft the total displacement comes out to 70cc. Suitable for use with stock or performance exhaust. Fits models with the Liquid…
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