Shadow 85 V3 – 85cc 52mm Bore Complete 2 Stroke Motorized Bicycle Engine Kit

**Engine Specifications:** – **Displacement:** 85cc with a 52mm bore and 40mm stroke – **Cylinder & Head:** One-piece design for improved power output, lower operating temperatures, and increased rider weight capacity – **Carburetor:** High-performance Speed carburetor for enhanced fuel delivery – **Reed Valve:** Controls air-fuel mixture for optimized performance – **Cylinder Lining:** Ceramic lining for durability, reduced friction, and lower operating temperatures – **Exhaust:** New ultra-quiet exhaust pipe with an oversized exhaust port – **Ignition System:** High-performance CDI using Yamaha components, paired with a performance magneto – **Fasteners:** Equipped with high-end stainless steel Allen bolts for added durability – **Additional Features:** Includes an improved gas cap. **Complete Engine Kit Includes:** – **Engine:** 85cc 2-stroke engine with integrated cylinder and head – **Reed Valve Intake:** Enhances air intake efficiency – **Bearings:** Upgraded needle bearing for piston wrist pin and thicker crankcase with reinforced bearings – **Crankshaft:** Balanced crank with a stuffed crankcase, featuring a 40mm crank stroke for better power, efficiency, and reliability – **Piston:** Double window piston paired with a long 89mm rod – **Ports:** Large intake port with a 40mm bolt hole width and an oversized round exhaust port (28mm diameter, 60mm stud spacing) – **Mounting Studs:** Engine comes with larger 8mm x 1.25 engine mount studs – **Dimensions:** Engine measures approximately 9″ x 9″ x 5″ **Mounting Kit & Accessories:** – **Ignition System:** High-performance CDI with Yamaha components – **Fuel Tank:** 2L black tear-drop gas tank, complete with a new fuel cap, fuel valve, fuel filter, and fuel line – **Chain:** Heavy-duty 415 chain with an included chain guard – **Chain Tensioner:** Ball bearing chain tensioner for smooth operation – **Muffler:** Ultra-quiet stainless steel muffler with sound insulation cotton inside Compare with: Phantom 85 motorized bike kit – **Throttle Assembly:** Includes a gooseneck-style throttle cable, twist throttle, matching grip, and kill switch – **Clutch Handle:** Quick-release clutch handle for easy operation – **Mounting Options:** Large front mount to accommodate bicycles with large down tubes – **Sprocket Options:** Available with 36, 44, or 48 tooth rear sprocket – **Tools Included:** Spark plug socket tool and gear removal tool **Fuel/Oil Ratio:** – **Break-In Period (First 310 miles):** 20:1 – **Post Break-In:** 25:1