Kspeed Performance Intercooler core Suits all Ultra 300 and 310 models, does not fit 250/260 This is a high performance Kspeed core replacement for the factory's aluminum core. Ours is custom made to our specs and made out of brass and copper. The factory oem intercooler is a really good thing, cools well and does a great job, however as it ages - the core can spring a leak which enters into the inlet and into the motor, to fix this it requires a whole new oem intercooler to be purchased which the price is quite expensive. So in 2019 we made a brass and copper core to suit our own skis needs, therefore enabling us to recore the intercooler we had with a better core at less cost. This core fits directly inside your oem housing, no modifications needed and comes complete with the required oem oring seals. Kspeed Performance Intercooler Core and Seals only price listed, there is fitting available here at the workshop, at extra cost if you ship your old intercooler to me. youtube link here = https://www.youtube.com/watch?v=4X6tZyMmtL8