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  • OS Engines R21 1/8 On-Road Club Racer Engine
  • OS Engines R21 1/8 On-Road Club Racer Engine
  • OS Engines R21 1/8 On-Road Club Racer Engine
  • OS Engines R21 1/8 On-Road Club Racer Engine
  • OS Engines R21 1/8 On-Road Club Racer Engine
  • OS Engines R21 1/8 On-Road Club Racer Engine

OS Engines R21 1/8 On-Road Club Racer Engine

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  • Detail

    Product Specifications

    Bore 0.64 in (16.3 mm)
    Crankshaft Threads UNF1/4-28
    Cylinders Single
    Displacement 0.213 cu in (3.49 cc)
    Plug Type Turbo RP7 glow plug
    Power Type Glow
    Product Height 3.6 in (91.2mm) from backplate to front bearing
    Product Length 2.5" (64.5 mm)
    Product Width 1.8 in (45 mm) at mounting tabs
    RPM Range 4,000 - 44,000 rpm
    Stroke 0.67 in (17.2 mm)
    Total Weight 12.35 oz (350 g)
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