How’s about that for a big block? We test the world’s most powerful diesel outboard - the Cox Powertrain Ltd. CXO 300hp... | Motor Boat & Yachting

I went through every detail on this 1996 #RM250 #2stroke engine. I tore it down completely, cleaned and polished the engine cases and cylinder, repainted the magnesium side covers, installed all new OEM bearings, rebuilt and balanced the OEM crankshaft with a @prox_racing_parts connecting rod, installed a new @wisecopistoninc clutch basket and piston, secured it all together with a @bolt_motorcycle_hardware engine pack, and I got a new kick starter for it. Even the swingarm pivot bolt mounting s