O.S. Speed B2103 Type S Competition Off-Road 1/8 Buggy Engine

O.S. Speed B2103 Type S Competition Off-Road 1/8 Buggy Engine
Price: $569.99
Discontinued Online
This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.
Please be aware that pricing and product availability in-store may vary from what’s available online because each store is independently owned and operated.

The O.S. Speed B2103 Type S Competition Off-Road 1/8 Buggy Engine is redesigned and modified to improve performance and run-time. The crankcase was designed specifically for this buggy engine and utilizes a low center of gravity cooling head for the best possible cooling in high ambient temperatures. Additionally, a rear ceramic bearing and DLC-coated, tungsten balanced crankshaft is used to keep the engine spinning smoothly. The inner head features a silicon O-ring to reduce vibration and prevent dust intake. 

The Type-S engine also features a 3-plus-1 port long-stroke configuration to increase torque in the low to mid RPM range while being easy on fuel consumption. The engine utilizes the updated crankcase, end cap and DLC-coated crankshaft, combined with the super efficient 22D carburetor for smoother throttle response and improved mileage. 



  • Crankcase: Redesigned crankcase, on which OS SPEED logo is engraved, has enough surface area for effective heat dissipation.
  • Cylinder liner: Type S 3– ports liner performs well at medium and low speed range
  • Outer head: Type S has high vertical finned low-profile cooling head for improving the car drivability with low gravity.
  • Inner head: For reducing vibration and preventing dust, the inner head is adopted silicon O-ring.
  • Carburetor: Type S features the 22D carburetor which emphasizes quick response and smooth acceleration.
  • Ball link: Redesigned ball link which can change the position of fixing screw for easy access.
  • Crankshaft: DLC Coated Crankshaft with Tungsten weights and potted with silicone.
  • Reducer: Designed to emphasize the inhalation effect, the 6.0mm II/6.5mm II are designed for both types.

Bore: 0.64 in (16.27 mm)

Carb Type: O.S. 22D slide valve
Crankshaft Threads: UNF1/4-28
Cylinder Type: Type R 5-port
Cylinders: Single
Displacement: 0.213 cu in (3.49 cc)
Engine (Only) Weight: 12.42 oz (352 g)
HP: 2.68 PS, 2.64 HP @ 34,000 rpm
Muffler Type: Tuned Muffler
RPM Range: 4,000 - 42,000
Recommended Fuel: 10-30% nitro content, 20% recommended for break-in
Stroke: 0.66 in (16.80 mm)
Type: .21 2-stroke 1/8 scale buggy engine,2-stroke, glow powered 1/8 scale .21 buggy engine

This product was added to our catalog on March 13, 2020