K-Tuned | Billet Oil CapAfter a countless number of requests, the K Tuned Billet Oil Cap is now available. For a design, we weren't trying to reinvent the wheel here, so we kept things very simple. Starting with 6061 billet aluminium blank, we threaded the bottom, machined a groove for an O ring seal, cut out the centre and placed 7 moon cuts around the outer circumference for grip when loosening or tightening. The cap is then fully polished and finished in your choice of 5