Made to fit a Long Wheelbase chassis of 250mm, available in 2mm or 3mm from Kamtec. Long Wheelbase Chassis available from Kamtec. Kamtec Models are SOLE UK distributors of UFRA Tyres. You can buy a chassis from Kamtec in 2mm if you are a rodder like Dan Smith or Rob Coles or in 3mm if you are a crasher like Wolfie or Alec Quarman !