OS Engines Speed B21 Ongaro Edition .21 Engine Only

Features

• Based off the latest off-road engine, O.S. Speed B2104
• Laser markings of Ongaro's original logo mark
• Crankshaft has been changed to a counter web shape and use of single tungsten weight crankshaft specially made for Davide Ongaro's engine to suit his driving style
• Outer head adopts a standard round type
• A new size 5.8mm / 6.3mm black anodized restrictor is also used for the carburettor to create an "engine that can win big races"

Product Information

Davide Ongaro, who won the IFMAR 1/8 Engine On-Road World Championship, signed with O.S. SPEED in 2021. This time, "O.S. SPEED B21 ONGARO EDITION", which has been modified according to his requirements, was born! Based on the latest on-road engine, O.S. SPEED B2104, the crankshaft has been changed to a counter web shape and the use of single tungsten weight crankshaft was specially made for this engine to suit his driving style. The inner head is also a specially designed combustion chamber, and the synergistic effect of these offers a smooth feeling and a 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 carburettor 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.

Specs

Displacement: 3.49cc / 0.213 cu.in.

Bore: 16.27mm / 0.641 in.

Stroke: 16.80mm / 0.661 in.

Output: 2.68 ps / 2.64 hp / 34,000 r.p.m.

Practical rpm range: 4,000-42,000 r.p.m.

Weight: 352g / 12.42 oz.