Details
Product Description :
Win the Race with the O.S. SPEED R2105 On-Road Engine – the Champion of the 2019 World Championship. The R2105 is a refined version of the R21 series, which dominated the world championship in the United States in 2019. This year, the R2105 is geared up to conquer the world championship to be held in Japan. With a new design of nine ports in the cylinder liner, the engine delivers enhanced torque and performance. The DLC-coated crank shaft, a signature feature of O.S. SPEED, ensures a seamless connection from low to high speeds. The silver head with a glossy finish, replaces the conventional black color for a sleek look. The thrust plate, a popular addition, increases the durability of the connecting rod for a competitive advantage in racing. Each component of the R2105 is made with the latest design for optimal performance, making it the perfect flagship engine for O.S. SPEED on-road racing.
Specs—————————
Displacement volume: 3.49 cc / 0.213 cu.in.
Bore: 16.08mm / 0.633 in.
Stroke: 17.20mm / 0.677 in.
Output: 2.80 ps / 2.76 hp / 35,000 r.p.m.
Practical rotation number: 4,000-45,000 r.p.m.
Weight: 345.0g / 12.17 oz.
Standard accessories: Glow plug T-RP7 / Reducer φ8.5 (RED) Exhaust sealing 1 piece / O.S. SPEED Dust cap set φ3, φ16, φ18 each 1 piece / Taper collet.
Feature:
Aiming for increased torque, the cylinder liner – a key component – adopts a new design with nine ports
By changing the dimensions of the tungsten weight, the connection from low speed to top speed has improved.
Adopts a glossy silver head with a buffed finish.
The crank case has adopted a new mold and the appearance has been changed with the O.S. SPEED logo added.
Based on the well-regarded 21M of the R2104, the stability of the engine during operation has been improved by changing the needle O-ring to a 2-piece specification.
By incorporating the popular thrust plate, the wear caused by interference between the connecting rod and cover plate during rotation is reduced, improving engine life.
