New RB Products SPEED 21 Engine



RB Products have announced the release of their new Speed 21 on-road engine. Featuring 14mm crankshaft technology and a 7 ports sleeve their new release provides a combination of high power and reasonable fuel consumption. 


  • Long Stroke engine
  • 7 ports + 2 by pass
  • Competition light and strong conrod
  • Turbo combustion chamber
  • 14mm bi-turbo, internal grinded and balanced crankshaft (long stroke)
  • 14mm main ball bearing
  • Strengthened and black coated crankcase
  • Nylon 8mm carburetor
  • Orange cooling head with new 2014 design
  • Orange dust protections