O.S. Speed T1204 Touring Engine




  • Tungsten Weighted Crankshaft Offers Better Performance in the Middle Range
  • Cylinder Head with Wider Fin Pitch Improves Cooling Efficiency
  • Slide Valve Carburetor with 5.5mm Reducer
    RP6 Medium Heat Range Turbo Glow Plug


O.S. SPEED T1204 is the successor of T1203 which is the World Champion engine in 2018. T1204 has more toque in low-middle range with better performance. Two tungsten weights are embedded in the counterweight of newly designed crankshaft, which helps powerful performance in middle range. The cooling head with wider fin pitch improves cooling efficiency.

Weight 0.7922 lbs
Dimensions 6.4 × 4.9 × 3.9 in