Our most popular Tensioner, the R45 sold over 35,500 units in 2016. Designed in 1994, this tensioner was developed for a number of manufacturers who wanted a simple, robust, solid tensioner with a long lifespan. R45 tensioners have been spotted still going strong after more than 15 years on the UK roads. The simple drop down handle latch has been keeping everything in place during travel for over 22 years and this original design has been replicated throughout the world.