Phantom 85 Version 3 is back in stock! New cylinder design eliminates ring snag while optimizing the size of the intake and transfer ports to deliver maximum power. Limited stock available.
ZTMOTO Phantom 85. The first true 85cc 2 stroke engine built for motorized bicycling. More than 2 years in the making this exclusive new engine has been redesigned to be the most powerful and reliable bicycle engine available.
The Phantom boasts a 52mm bore, redesigned, single piece cylinder combined with a 40mm stroke that makes this the biggest, fastest, most powerful bike engine you can buy. The bike engine kit comes standard with an upgraded CDI, the latest performance Speed carb, a reed valve, a double window piston, and a brand new class of high-end exhaust.
Testing has shown the ZTMoto 85 to deliver well over 3 HP. More powerful than the so called 100’s, faster than the Dio’s, the Phantom delivers high end performance right out of the box.
We also know that along with performance motorized bike riders demand durability. That’s why we made sure to include a ceramic coating on the inside of all the Phantom cylinders. This process, often seen in the racing industry, extends the life of the cylinder, reduces friction and heat, and helps improve overall engine performance.
New Phantom 85 Features Include:
52mm Bore, 40mm Stroke - Actual U.S. engine displacement: 85cc
Single piece cylinder and head (Lower operating temps, increased rider weight capacity, improved power output across varied rpm range)
High performance Speed carb
Reed Valve (Controls air-fuel mixture flow to increase performance)
Ceramic lined cylinder (Significantly improves cylinder durability, reduces friction, lowers operating temps, increases performance)
All new ultra-quiet exhaust pipe
Oversized exhaust port
High performance CDI with Yamaha components
Performance magneto
High end allen bolts
Improved gas cap
ZTMOTO Phantom 85 Complete Engine Kit Includes:
85cc 2 stroke engine with one piece cylinder and head
Reed valve air intake
Needle bearing for piston wrist pin
High performance Speed carb
Angled LD Z8C spark plug
Performance magneto
Stainless steel allen bolts
Better balanced crank
Upgraded bearings / 60% thicker crank case around bearings
Stuffed crank case
Large intake port (40mm bolt hole width)
Oversized round exhaust port - 28mm diameter, 60mm stud spacing
40mm crank stroke (more powerful, efficient, and reliable)
Double window piston
Long rod (89mm)
Larger 8mm x 1.25 engine mount studs
Approximate engine dimensions: 9" x 9" x 5"
Mounting Kit & Accessories Included:
High performance CDI with Yamaha components
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
Ultra quiet muffler (Stainless steel with sound insulation cotton inside)
Throttle assembly w/gooseneck style throttle cable
Twist throttle and cable with matching grip and kill switch
New quick release clutch handle
Large front mount for bicycles that have large down tubes
Available with 36, 44, or 48 tooth rear sprocket
Spark plug socket tool and gear removal tool
Fuel/Oil Ratio
New Engine (<310 miles): 20:1
After Break In: 25:1
