OS SPEED B21 ONGARO EDITION

Davide Ongaro, who won the IFMAR 1/8 Engine Off-Road World Championship, has signed with O.S. SPEED since 2022.

This time, "O.S. SPEED B21 ONGARO EDITION", which has been modified according to his feeling, was born! Based on the latest off-road engine O.S. SPEED B2104, the crankshaft has been changed to a counter web shape and use of single tungsten weight crankshaft specially made for this engine to suit his driving style. The inner head is also specially designed combustion chamber, and the synergistic effect of these realizes a smooth feeling and more powerful top end. In addition, the outer head adopts a standard round type, and the laser marking of ONGARO's original logo mark creates a racing atmosphere.
A new size 5.8mm/6.3mm black anodized restrictor is also used for the carburetor to create an "Engine that can win big races" that matches his requirements.
We also have a combo set that includes the TB02(As known as T-2090) EFRA 2089 tuned silencer and the exhaust system of the /MB01-75 (75mm) manifold.

Features:

• Based on O.S. SPEED B2104
• ONG Cooling-head
• ONG DLC coated crankshaft has two tungsten counter weights for smooth rotation and the best balance
• ONG Inner head with an silicon O ring for reducing vibration and preventing dust
• ONG specific black restrictors.
• Rear-cover with thrust plate reduces friction against the connecting rod to extend its life.
• Long stroke 16.8mm engine
• Ceramic Main-Bearing

• Displacement: 3.49cc
• Output: 2.68ps @ 34,000 rpm
• Bore: 16.27mm
• Stroke: 16.80mm
• Practical RPM Range: 4,000 ~ 42,000 rpm
• Weight: 352g

• Engine DAVIDE ONGARO
• T-P3 plug
• 5.8mm & 6.3mm Venturi's
• Exhaust Gasket
• Dust Cap Set (3mm/16mm/18mm)