R1 Swap ITB Kit for the Mini

Creating the ITB swap kit

It took a few iterations to get a look that felt right while also being functional. I chose the 2015 ITBs because it is still within the brand. The main issue with this was that the 2015 R1 has evenly spaced inlet ports, while the ‘03 R1 does not. Mocking this up in CAD was easy with the use of the Einstar Vega 3D Scanner. Unfortunately, due to the uneven spacing between the head and the ITBs, there now has to be a manifold. This means I am now spacing the butterflies away from the valves. I am not an engineer by any means, but I do understand that increasing butterfly distance from the valves can cause RPM range differences and have power potentially fall off earlier. I did my best to keep the manifold as short as possible (1.2” in total length) while also keeping the runners as straight as possible. Testing the finished product on a dyno will show me how this will affect the power band. So I must wait. Besides the ITBs, every part here is designed and 3D Printed by me. I’ve used QIDI’s ABS-GF filament for the trumpets, hold-down brackets and the TPS extension(fitment reasons). I have QIDI’s PPS-CF (for e85 resistance) on the way to make the manifold out of. The ABS-GF TPS extension should be durable enough to withstand the snapping of the throttle plates and here’s to hoping the same filament for the trumpets holds up as well!