SH PT003 21 Pro .21 8 Port Buggy Engine. This is a sport grade 8-port engine with a composite 2-needle carb.

Features:

• Composite 2 Needle Carb with 6.5mm and 7.0mm venturis
• LCG head design for the engraving, milling cutting and patented thermal sensor
• Includes SH air filter and R4 plug
  
• Patented thermal sensor to measure the plug temperature directly from the cooling head

Specifications:
Cubic Capacity: 3.49cc
Bore: 16.27mm
Stroke: 16.75mm
RPM: 34000
Power: 2.50 HP
Weight: 339g