Mugen USA got in touch to tell us about the new Ninja JX21B02 .21 off-road buggy and truggy nitro racing engine. The company teamed up with O.S. Engine to create a 3-port long stroke engine with a new piston/sleeve design. The long stroke creates a stronger more linear power band from low end top fuel high end speed while the redesigned crankcase and crankshaft make for better performance and higher fuel economy. The light weight cooling head is 10 fins high but it sits 8mm lower than the previous Ninja engine for a low centre of gravity.
– Low profile light weight cooling head
– New piston & sleeve
– New profile head button
– Black anodised crankcase
– Black anodised carburettor with 7mm restrictor
– New crankshaft with DLC (Diamond-Like Carbon) coating