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OS MAX R21 (silver version with blue head)

OS1B900
OS MAX
SPEED R21 is a 1/8 On Road spal. 3.49cc engine. Power 2.75PS at 33,000 rpm, speed range is 3,000 - 41,500 rpm, Turbo spark plug, weight 350g.
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In stock - main warehouse: > 10 pcs
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Recommended retail price
334.64 €
Your price with VAT
()
276.56 €
Price without VAT
276.56 €

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    OSMotor Nitro Motor R21

    Club or cup racers rejoice! The R21 engine builds on the heritage of the R2102 engine (World Champion Engine) and delivers an unrivaled combination of performance and value for 1/8 On-Road racing. The crankshaft, including the piston and liner, are designed for peak performance and easy maintenance, making it an ideal choice for beginners and novices. This engine can be upgraded with high-performance OS Speed parts, allowing you to fully realize your winning potential. High performance and an affordable price: This is what you can expect from the R21 engine, from the OS MAX brand.

    Properties:

    • The perfect power unit for beginners and club racers.
    • Newly developed crankshaft including piston and liner with the option of later upgrading to a powerful Spec class engine.
    • Glow plug RP7 Turbo
    • Carburetor reduction 8.5mm
    • Exhaust sealing ring
    • Set of dust covers

    Technical Specifications

    • Displacement: 3.49 cm3
    • Bore: 16.08mm
    • Stroke: 17.20 mm
    • Channels: 5
    • Speed range: 3,000 - 41,500 rpm
    • Power: 2.75 PS at 33,000 rpm
    • Weight: 350g
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