Zeda 85 Complete 52mm Bore 2 Stroke Motorized Bicycle Engine Kit - True 85cc Bike Motor - Firestorm Edition

It’s here! What you’ve been waiting for - a powerful 85cc 2-stroke engine kit from the trusted Zeda brand.

This latest powerhouse features a 2-piece cylinder construction for enhanced durability and efficiency. The large bore 52mm piston with a single piston ring ensures optimal combustion and power output, while the thicker snap rings add reliability and longevity.

Designed with high-performance parts, the Zeda Firestorm 85cc engine offers a powerful stock engine with the potential to upgrade. The 2-piece ultra-quiet muffler with a large port minimizes noise and optimizes exhaust flow for superior performance. This kit ensures you can get the speed you want and the reliability you need. An affordable option for those who want a superior ride, the Zeda Firestorm 85cc engine is perfect for upgrading your ride or building a new project.

Zeda 85 Features Include:

• 52mm Bore, 40mm Stroke - Actual U.S. engine displacement: 85cc
• Stock Max Power 3.8HP, 7700r/min
• 2-Piece cylinder w/ skirt; chrome painting inside
• High performance speed carb
• Piston with 1 piston ring and thicker snap (wrist pin) rings
• All new ultra-quiet exhaust pipe
• Oversized exhaust port (28mm diameter, 50mm stud spacing)
• High performance CDI with Yamaha components
• Performance magneto
• Large intake port (40mm)
• Long rod (89mm)
• 40mm crank stroke (powerful, efficient, and reliable)
• Larger 8mm x 1.25 engine mount studs
• Stuffed crank case

Zeda 85 Complete Engine Kit Includes:

• 85cc 2 stroke engine
• Piston, 1 piston ring, 2 x snap rings
• Needle bearing for piston wrist pin
• 19mm OD manifold (air intake)
• Angled LD Z8C spark plug
• Performance carburetor, CDI, and magneto
• Stainless steel allen bolts
• Cylinder gaskets (1-piece), intake gasket, and exhaust gasket
• Upgraded bearings / 60% thicker crank case around bearings
• Balanced Crank

Mounting Kit & Accessories Included:

• Aluminum Grips Silver with black rubber
• Black tear drop gas tank (2L) w/ new fuel cap, fuel valve, fuel filter, and fuel line
• 415 Heavy duty chain with chain guard
• Ball bearing chain tensioner
• 2-Piece silencing exhaust
• Throttle assembly w/gooseneck style throttle cable
• Twist throttle and cable with matching grip and kill switch
• Quick release clutch handle
• Large front mount
• Available with 36, 44, or 48 tooth rear sprocket
• Sprocket install kit
• Spark plug socket tool and gear removal tool

Fuel/Oil Ratio

• New Engine (<310 miles): 20:1
• After Break In: 24:1

Approximate engine dimensions: 9” x 9” x 5”

Fuel consumption: 2.8L/100km, 62mi

Max Speed: 73kmh, 45mph

Max Load Capacity: 135kgs, 297lbs

Installation Similar To: FireStorm Zeda 80 Installation Instructions | Cylinder Assembly Instructions | Cylinder Assembly Video
Troubleshooting: 2-Stroke Troubleshooting Guide