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O.S. Engine O.S. ENGINE 1/8 O.S Speed B2103 Type-S Engine w/ T-2100SC M2004SC 85mm Combo Set

USD 439.90 USD 469.90 (Save 6.4%)

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Tags: O.S. Engine Engine

O.S. ENGINE O.S Speed B2103 Type-S Engine w/ T-2100SC M2004SC 85mm Combo Set #OS1BN01


This is the OS Speed B2103 Type S engine with OS T2100SC exhaust system. The OS Speed B2103 Type S engine is a 3-port long-stroke engine that offers a high torque at mid-low range with a sweet delivery and low consumption. The crankcase, the crankcase cap and the carburetor feature a new design. The new DLC-coated crankshaft has two tungsten counterweights for smooth rotation and better balancing. The B2103 Type S comes with a low–profile cooling head to provide better drivability and also vertical fins on the top to improve heat dissipation. An O-ring between the cooling head and the combustion chamber insert reduces vibrations protect against dirt thanks to a better sealing. The new 22D carburetor guarantees high response and smooth acceleration.


  • For: 1/8 Nitro RC Car
  • Material: Metal
  • Color: Silver
  • The long-stroke off-road engine put a high value on torque in low-middle range with smooth operation and better fuel mileage
  • The crankcase, carburetor and cover plate, and inner head are designed new.
  • All the parts are interchangeable to those of TYPE R’s.
  • High vertical finned low-profile cooling head for improving the drivability and better heat dissipation
  • The new DLC coated crankshaft has two tungsten counter weights for smooth rotation and the best balance
  • A newly designed 3-port cylinder& piston set
  • The inner head with a silicon O-ring for reducing vibration and preventing dust
  • A newly designed 22D carburetor, which produces high response and smooth acceleration
  • Replaces Speed Spec III
  • Includes the OS T2100SC exhaust system


  • Displacement: 3.49cc
  • Bore: 16.27mm
  • Stroke: 16.8mm
  • RPM: 4000-42000 rpm
  • Max output: 2.64hp/34000 rpm
  • Weight: 347g
  • Exhaust: T2100SC
  • Port: 3-port


  • O.S. ENGINE O.S Speed B2103 Type-S Engine w/ T-2100SC M2004SC 85mm (1 set)

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