Honestly no. Back in the days (as in early 2000's) truggies were heavy as heck and gearing was not really that great they needed more power and we used to make .28's. We were also the first to release purpose built .30's and .32's car engines (Collari .30 & .32) so we've actually made engines that were even larger but that was more focused on monster truck use. In any case todays truggies are completely different animals and a quality .21 truggy oriented engine like our B5 or B5 Pro II is going to have more than enough power for a truggy. Running anything larger is simply going to result in excessive wheel spin and you are goind to get killed on fuel consumption, which is why no one uses .28's anymore for racing truggies and have all switched to .21's.