Need a Bike most MTB's are strong enough for heavy riders. Even used bikes MTB's on Craigslist will qualify. Older chromoly steel MTB's with solid forks are extremely durable and many have high end components from their era. Older bicycles may need rebuilding or major maintenance done but still can be very reasonable in price for the amount of service one can get from them. At our heavier weights wheel durability can be an issue. If you buy a bicycle and the wheels cause problems there are good blogs in here covering those problems.