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OS MAX-R21 1/8 On-Road
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O.S.Engine Nitro Motor R21
Club racers rejoice! The R21 is based on the Championship heritage of the R2102 engine and delivers an unbeatable blend of power and value for 1/8 on-road racing. Its crankshaft and piston/liner are designed with premium performance and easy maintenance in mind, which makes it an ideal choice for beginners. This engine is upgradeable with high-performance O.S. Speed parts, letting you realize your full winning potential. High performance. Low price. That's what you can expect from the R21, only from O.S.
Features:
- The perfect power plant for rookies and club racers.
- Newly developed crankshaft and piston/liner with the capability to upgrade later to a Spec-class performer.
- RP7 Turbo glow plug.
- 8.5 mm carb reducer.
- Speed flywheel collet.
- Exhaust seal ring.
- Dust cap set.
Specs:
- Displacement: 3.49cc
- Bore: 16.08mm
- Stroke: 17.20mm
- Port: 5
- Power Output: 2.75 PS @ 33,000 RPM
- Practical RPM Range: 3.000~41.500 RPM
- Weight: 350g
- Includes: RP7 Turbo glow plug, exhaust seal ring, 8.5 mm carb reducer, dust cap set
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