O.S. Speed B2105 Competition .21 Nitro Engine w/Pipe Combo

Engine Overview:

The O.S.SPEED B2105 Off-Road Buggy Engine is designed for competitive buggy racing, offering enhanced power and drivability. Manufactured by O.S. Engines, this engine boasts a newly redesigned cylinder and liner with three ports, delivering greater torque from mid to high-end. The black and silver anodized cooling head ensures efficient heat dissipation, while the DLC-coated crankshaft and revised internal shape optimize both power characteristics and ease of use compared to previous models.

The O.S.SPEED B2105 also incorporates a double-seal front bearing for improved durability and stability. Inherited from the B2104 crankcase, the engine features ceramic bearings and a specially treated thrust plate to reduce wear and enhance engine life. With a practical RPM range of 4,000 to 42,000, this engine offers smooth and linear power delivery for superior performance in off-road racing environments.

Features:

• Redesigned cylinder and liner with three ports for improved torque
• Black and silver anodized cooling head for efficient heat dissipation
• DLC-coated crankshaft with revised internal shape for better power delivery
• Double-seal front bearing for increased durability and idle stability
• Ceramic bearing in the crankcase for reliable performance
• Specially treated thrust plate reduces friction wear for longer engine life

Specifications:

• Displacement: 3.49 cc / 0.213 cu.in.
• Bore: 0.641 in. (16.27mm)
• Stroke: 0.661in. (16.80mm)
• Output Power: 2.68 ps / 2.64 hp / 34,000 r.p.m.
• Practical RPM Range: 4,000-42,000 r.p.m.
• Engine Weight: 12.28 oz. (348g)
• Recommended Application: 1/8 Buggy Off-Road

Includes:

• (1) B2105 Competition .21 Nitro Engine w/Pipe Combo

This product was added to our catalog on November 7, 2024