O.S.Speed R21-M06 Marine Racing Engine (Minicars Special Edition) |
| This is the new 2025-edition Minicars Marine Special Edition O.S.SPEED R21-M06 3.5cc long-stroke competition engine. The R21-M06 has a new piston & liner, a new conrod, a new crankshaft & a ceramic main ball bearing. Features: • New DLC coated & balanced R21 Euro-II crankshaft with more timing • New 9-port cylinder liner with 3-port exhaust • New piston with 3 oil-grooves • New Ceramic main ball bearing • New Reinforced "R" conrod • New RP6 Turbo plug (instead of RP7) • O.S.Speed developed black crankcase with Minicars Marine Laser Engraving • Black anodized water cooling head with Minicars Marine Special Edition Laser Engraving • Backplate with steel thrust plate for lower friction and increased durability • No carb included - choose your own carburetor (15mm diameter neck) Suitable for competition boats (experience level ”high”): • Hydroplanes • Offshore (with gear deduction) • Endurance (with gear reduction) |
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