RAM’s Hellcat-powered TRX truck is a 10 out of 10. Hennessey’s warranty-guaranteed MAMMOTH performance upgrades are an 11. This MAMMOTH 900 had an obvious power advantage but was fitted with 20″ wheels and 37″ tires. We were curious to know how much this larger, heavier setup would affect the truck’s performance so we headed to the Pennzoil Proving Ground with a stock TRX for some comparison.
Source: Hennessey Performance via YouTube