The X-Pin Differential is one of the most cost effective upgrades to the Classic Mini gearbox.
Virtually eliminating differential failure due to pin wear and breakage. The use of two, crossed molybdenum coated pins provide support for double the number of pinion or planet gears, not only increasing strength but smooth power delivery and less tendacy to torque steer.
Full fitting instructions are provided on the Guessworks website.
Also if you would like me to build the x-pin for you then all you need do is send your current diff to me and I will, FREE.