Looks like a UK version of the VORTEK Springer tune kit but couldn't find 22mm nor TL when doing a site search. Processes around the same as VORTEK considering shipping international. Yo!
Tinbum Tune(TBT) kits aren't bad, but by all accounts I've read, the Tony Leach Kits are way better and worth the dollars should you have them to spend for one.
its both a tune kit and he has short stroke. as competing? well i think, this is just opinion from what i have seen and read, that the TL 22mm is "THE" cat's meow
please don't quote me but it depends. Look up Tony Leach and a member here (nitrocrushr) has done a extensive, knowledge and picture filled write up that is awesome.