O.S. Speed B2105 Competition 3.5cc (.21) Off-Road Nitro Buggy Engine (DLC Shaft) (Ceramic Bearing)

Write the first review
O.S. Speed B2105 Competition 3.5cc (.21) Off-Road Nitro Buggy Engine
Back Order Now
You may back order this item and it will ship when it arrives.
FREE Shipping Eligible! Learn More
Price: $752.99
Back Order

Please Log in to receive a notification when this item arrives in stock.

Save In List
This item earns up to 753 VIP Reward Points Learn More

Engine Overview:

The Speed B2105 Competition 3.5cc Off-Road Nitro Buggy Engine with P3 Glow Plug, by O.S.SPEED, represents the pinnacle of off-road racing performance engines. Designed to excel in harsh racing conditions, this fifth-generation B21 series engine delivers exceptional power, smoother idling, and unparalleled reliability. It features a re-engineered cylinder liner and crankshaft for smooth, linear power delivery, enhancing performance across all RPM ranges.


Features:

  • Smooth and linear power delivery
  • Improved fuel efficiency
  • Lightened DLC coated Crankshaft
  • Competition-grade conrod for maximum durability
  • CNC-machined piston for optimal efficiency
  • Enhanced drivability with a lighter outer head
  • Engineered for high-RPM performance
  • Balanced fuel consumption
  • Exceptional reliability and durability
  • Optimized cooling and airflow

Specifications:

  • Application: 1/8 Off-Road Racing
  • Displacement: 3.5cc / 0.213 cu.in.
  • Bore: 0.641in. (16.27mm)
  • Stroke: 0.661in (16.80mm)
  • Practical RPM Range: 4,000-42,000 RPM
  • Output: 2.68 ps / 2.64 hp / 34,000 RPM
  • Weight: 12.28oz (348g)

Includes:

  • (1) Speed B2105 Competition 3.5cc Off-Road Nitro Buggy Engine
  • (1) P3 Glow Plug
  • (1) Reducer Set
  • (1) Exhaust Seal Ring
  • (1) Dust Cap Set

This product was added to our catalog on January 16, 2025