SPEED R2105 Combo with exhaust

Introducing the OSSPEED R21 series, the top of the range for 1/8 On-Road models!!!

The OS SPEED R21 series won the previous World Championship held in the United States.
The "R2105", most of its parts have been newly designed, is aiming for successive victories in the World Championship, which will be held in Japan this year.
A newly designed 9-channel insert has been adopted to increase torque on the track with high grip. The traditional DLC-coated OS SPEED crankshaft delivers linear performance from low to high through counterweight change. The cooling head was given a mirror finish, and the silver base of the head was adopted with a colorless coating from the common color. By adopting a pressure plate made of steel, the wear caused by the interference between the connecting rod and the tailstock during rotation was reduced and the life of the engine was increased.
Adopting the latest design of most engine parts, the engine is finished with content suitable for the OS SPEED flagship road engine.

Technical parameters

• Displacement: 3.49 cm3
• Bore: 16.08mm
• Stroke: 17.20 mm
• Channels: 9
• Speed range: 4,000 - 45,000 rpm
• Power: 2.80 PS at 35,000 rpm
• Weight: 345g