⚡ Quick Features
New 50mm single-piece cylinder/head for more torque & cooler operation
Includes Speed carb, upgraded magneto, and Yamaha CDI for top performance
Choose your sprocket: 36T (top speed), 44T, or 48T (torque)
Stuffed crankcase with pearl coating for better balance and durability
 
📦 Full Description
The Zeda100 V2 Firestorm (YD-100) is one of the most powerful 2-stroke bicycle engines available today. With a 50mm bore and a 40mm stroke, this beast boasts a real U.S. displacement of 78.6cc, giving you big torque, reliable performance, and smooth acceleration. Whether you're looking to fly down open roads or tackle steep hills, this engine kit delivers serious firepower.
The new single-piece cylinder/head improves cooling, compression, and starting power while eliminating common gasket failures. It also helps maintain stable performance across the entire RPM range—perfect for both short commutes and longer high-speed cruises.
 
💪 Why It Rocks:
High-performance Speed carb and Yamaha-grade CDI
Stuffed crankcase + 60% thicker casing = maximum durability
Chrome Allen bolts, anti-corrosion pearl coating, and reinforced 8mm engine studs
Round 21mm exhaust port + improved large intake
Dimensions: Compact 9" x 9" x 5"
🧰 What’s in the Kit:
Firestorm Zeda100 2-stroke engine (78.6cc actual)
High-performance Speed carb & CDI
Angled LD Z8C spark plug
Chrome muffler (angled for pedal clearance)
415 Heavy-duty chain with chainguard
Throttle assembly with gooseneck cable + kill switch
Twist throttle grip
Quick-release clutch lever
Ball-bearing chain tensioner
Large front mount (for oversized down tubes)
Rear sprocket of your choice: 36T (speed), 44T (standard), 48T (torque)
Spark plug socket & gear removal tools
2L black teardrop gas tank with upgraded cap, fuel valve, line & filter
🎯 This engine-only kit is perfect for builders who want to upgrade their bike with raw speed and power. Pair it with your favorite frame and let it rip!