Associated believed that 4wd 1/10 market is small. Therefore, they rather not to produce a 4wd for a smaller market. But now thunder tiger bought over Associated, the company direction has changed. FYI, Associated made a one of 4wd rc10 and raced in the world championship back in 1985, I am not referring to the MIP 4wd conversion, this is a 'real' associated 4wd rc10 but they did not market it after all.