O.S.SPEED B2104 COMBO SET...
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O.S.SPEED B2104 COMBO SET 1DA01

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B2104 COMBO
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O.S.SPEED B2104 COMBO SET 1DA01

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O.S.SPEED B2104 Offroad Racing Engine - Combo Set The O.S.SPEED Offroad Racing Engine has evolved even further. The 4th generation of the B21 series, the "B2104" has improved response at low speeds as a result of ensuring the power to gain an advantage in tough off-road racing scenes and pursuing a driving feel that consistently demonstrates performance in every situation. It achieves smooth and torque performance at medium and low speeds. This has evolved into an off-road engine that synchronizes perfectly with fingertip movement from idle to higher revs. By condensing OS SPEED know-how all over the body, we will continue to make the legend of the off-road racing scene again. It is a long stroke engine, bore x stroke 16.27 x 16.80mm. It has quicker low-end response and more mid-range torque with steady idle. O.S. SPEED B2104 Combo Set (1DA01) This combo set is equipped with TB03 muffler (T-2100, EFRA 2155) with 80mm manifold (MB-01-80). New Piston / Liner Set The new piston / liner is a conventional 3-way type which allows for higher torque in the power range. New crankshaft with DLC coating The new crankshaft has a DLC coating as we always do for OS SPEED engines. The two tungsten counterweights are incorporated into the crankshaft contributing to a constant idle speed and rapid lowering of the revs based on the movement of the throttle. New Case Cover Plate Surface treated thrust plate incorporated into the cover plate reduces friction against a connecting rod to extend its life. Optimized flow The boost port and crankcase exhaust port are redesigned for optimal air flow. Carbo tested The carburetor is reliable 22E type, which we used for B2103 Type R. Cooling head The cooling head is conventional round shape type with standard height. Specifications: Displacement: 3.49cc Bore: 16.27 mm Stroke: 16.80 mm Power: 2.64 hp at 34,000 rpm. Practical RPM Range: 4,000-42,000 Weight: 352g Standard Accessories: TB03 Muffler (T-2100, EFRA 2155) 80mm Manifold (MB-01-80) T-P3 Glow Plug Venturi Reducer: 6 and 6.5 mm Exhaust sealing ring Dust cap set: 3, 16 and 18 mm

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