Ultimate Engines M5S Ceramic + Exhaust system 2141
This is the Ultimate M5S based on the OS B2103 Type R engine. This 5-port long-stroke engine offers great power at medium-high speeds. The new DLC-coated crankshaft has two tungsten counterweights for smooth rotation and better balancing. It comes with ceramic rear bearing, the 22E carburetor and an O-ring under the cooling head to reduce the vibrations and preventing dust from entering the engine.
Includes Ultimate Racing EFRA 2142 Exhaust System
Features:
- The long-stroke off-road engine put a high value on beasty power in mid-high speed range.
- The cooling head, carburetor, crankcase cover plate are designed new.
- The new DLC-coated crankshaft has two tungsten counterweights for smooth rotation and better balancing.
- Ceramic rear bearing.
- O-ring under the cooling head for reducing vibration and preventing dust from entering the engine.
- A newly designed 22E carburetor for producing high power
Specifications:
- Displacement 3.49cc
- Bore 16.27mm
- Stroke 16.80mm
- RPM 4000 - 42000
- Max output 2.64hp/34000 RPM
- Weight 352gr
- Recommended exhaust: UR352141 o UR352142
- Port 5-port
