O.S.SPEED B21 ONGARO World Champion Edition Combo Set (TB02 EFRA2089 Pipe ＆ MB01-75 manifold) Davide Ongaro, IFMAR 1/8 Engine Off-Road World Championshion, has signed with O.S. SPEED since 2021. This time, "O.S. SPEED B21 ONGARO World Champion Limited 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 φ6.5mm blue anodized restrictor is also used for the carburetor to create an "Engine that can win big races" that matches his requirements. This limited edition engine is only available as 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. WORLD CHAMPION Davide Ongaro（Italy） Davide Ongaro, who won the IFMAR 1/8 Engine Off-Road Car World Championship Champion, has signed with OS SPEED since 2021. 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 new cooling head adopts a standard round type, and the new ONGARO/WC laser logo mark creates a racing atmosphere (not available as a spare part). A new φ6.5mm blue anodized restrictor is also used for the carburetor to create an "Engine that can win big races" that matches his requirements. The crankcase is unique for the Ongaro WC edition and not available as a spare part. Specs: Displacement: 3.49cc Bore: 16.27mm Stroke: 16.80mm Output: 2.68ps/2.64hp @ 34.000RPM Practical rpm range: 4.000-42.000 Weight: 352g Standard accessories: Glow plug: T-P3 Reducer 6.5mm Exhaust seal ring Dust cap set (3, 16 & 18mm)