#OS1DA01 - O.S. SPEED B2104 Off-Road Combo

#OS1DA01 – O.S. SPEED B2104 Off-Road Combo

£479.99

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Joshua Evans
Joshua Evans
Ordered a new brushless motor and ESC combo for my crawler, and it’s working like a dream. Shipping was surprisingly fast, and the parts were exactly as described. I had a minor issue with the wiring, and customer service helped me figure it out over email within a few hours. Great experience overall.
Thomas Pearson
Thomas Pearson
Just got my first RC drift car from this site, and it’s been a blast! The car arrived well-packed and in perfect condition. I had some questions about the best batteries to pair with it, and their support team was quick to respond with solid advice. It’s refreshing to deal with a company that actually knows their products. Will definitely order from them again.
LT
LT
Purchased:Kyosho EP Fantom 4WD EXT CRC II 112 Kit (Legendary Series)
Good communication with the seller would definitely use again.
Pete Goddard
Pete Goddard
Purchased: Flywing BELL-206-V3 RTF RC Helicopter
All good, would order from this seller again.
Alex
Alex
Purchased: MJX H8H Hyper Go RC Crawler Brushless 1:8th Scale Crawler Truck (Blue Orange)
Arrived with in 2 days, Arrived as stated in a well Packaged box, will definitely be ordering again.
Oli Short
Oli Short
Delivery was a little late (3 days), but arrived 1 day late. Think this was royal mail to be fair. Everything else good!

O.S.SPEED B2104 Off-Road Racing Engine – Combo Set
O.S.SPEED’s off-road racing engine has evolved further. The 4th generation of the B21 series, the “B2104” has improved low-speed response as a result of securing the power to gain an advantage in harsh off-road racing scenes and pursuing a driving feel that steadily demonstrates performance in any situation. Achieves smooth and torqueful performance at medium and low speeds. This has evolved into an off-road engine that perfectly synchronizes with the movement of the fingertips from idling to the highest rpm range. Condensing the know-how of OS SPEED on the whole body, we will continue to make the legend of the off-road racing scene again. It is a long-stroke engine, bore x stroke is 16.27 x 16.80mm. It has quicker response in low range and more torque in middle range with consistent idling. O.S. SPEED B2104 Combo Set (1DA01) This combo set is equipped with TB03 (T-2100, EFRA 2155) silencer with 80mm manifold (MB-01-80). New Piston/Liner Set The new piston/liner is conventional 3-port type enabling more torque over the power range. New DLC Coated Crankshaft The new crankshaft has DLC coating as we always do for OS SPEED engines. The two tungsten counterweights are embedded in the crankshaft contributing consistent idling and quick rpm down according to throttle move. New Case Cover Plate The thrust plate with surface treatment embedded in the cover plate reduces friction against a connecting rod to extend its life. Optimized Flow The boost port and the exhaust port of the crankcase are redesigned for optimum air flow. Proven Carb The carburetor is trustable 22E type, which we have been using for B2103 Type R. Cooling Head The cooling head is conventional round-shape type with standard height. Specs:
Displacement: 3.49cc
Bore: 16.27mm
Stroke: 16.80mm
Output: 2.64 hp @ 34.000r.p.m.
Practical rpm range: 4.000-42.000
Weight: 352g
Standard accessories:
TB03 (T-2100, EFRA 2155) silencer
80mm manifold (MB-01-80)
Glow plug T-P3
Reducer Venturi: 6 & 6.5mm
Exhaust seal ring
Dust cap set: 3, 16 & 18mm

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