O.S.SPEED B2105 Ongaro V3 World Champion Combo Set

O.S.SPEED 1EK02 - B2105 Ongaro V3 - 3.5cc Buggy Racing Engine Combo Set

The top of the world again for a third time in a row!


First delivery is expected early February 2025.



The new O.S.SPEED B21 Ongaro V3 edition is based on the well proven B2105 engine with some added features to celebrate the third world championship winning performance of Davide Ongaro.

O.S.SPEED's off-road racing engine has undergone further evolution. The B2105, which has evolved into the fifth generation of the B21 series, is designed to secure power to gain an advantage in harsh off-road racing scenes and pursue a driving feel in any situation. change. This allows for smooth rotation. Furthermore, the effect of a lighter outer head also overlaps, and we have succeeded in improving drivability.

O.S.SPEED B2105 Ongaro V3 Edition Features:

• B2105 Cooling head with black & gold double anodizing and Ongaro V3 laser engravement
• B2105 Crankcase with unique laser engravement
• 24K Gold plated 6.5mm venturi reducer
• O.S.Speed T-P3 gold plug
• TB02 EFRA2089 (T-2090SC) pipe with "Ongaro Signature & World Champion" Engravement & MB01-75 (M2000SC) 75mm manifold
• None of the Ongaro Edition V3 parts are available separately

The cooling head is based on B2105 with black and gold double anodized specification requested by Ongaro. The laser design with “V3” logo has been added to the laser engraving.


Carburetor reducer is the same φ6.5II that was used by Ongaro during World championship. It is 24k gold plated as World championship model.



Crankcase with special laser engraving and with shiny “O.S. SPEED” and “B21” logos on both sides.


ONLY COMBO SET is available with TB02 EFRA2089 (T-2090SC) + MB01-75 (M2000SC)



TB02 tuned silencer comes with Ongaro’s signature and “WORLD CHAMPION” logo.


The B2105 cylinder/piston uses 3 ports. The port shape has been changed and the air-fuel mixture flow has been reviewed to achieve more useful torque performance.


The B2105 crankshaft has undergone O.S.SPEED's traditional DLC processing and the internal shape has been revised to improve not only power characteristics but also rotational hold.





The crankcase has inherited the well-established B2104.


The cover plate adopted from B2104 uses a specially treated thrust plate to reduce wear caused by interference between the rotating connecting rod and the cover plate, extending engine life.

Specs:

• Displacement: 3.49cc
• Bore: 16.27mm
• Stroke: 16.80mm
• Power: 2.68ps / 2.64hp @ 34.000RPM
• RPM range: 4000-42.000
• Weight: 348g

Standard accessories:

• Glow plug: O.S.Speed T-P3 Gold
• Venturi: 6.5mm Gold plated
• Exhaust seal ring
• Dust cap set: 3, 16 & 18mm
• TB02 EFRA2089 pipe + MB01-75 manifold set