MicroTune® Spring Tensioner One of the early AXiS innovations was The MicroTune® Spring Tensioner - a patented spring mechanism that allows for easy adjustment and greater precision when dialing in the perfect spring tension. The “slide tensioner” delivers over 2 times more precision and provides for a greater tension range. The AXiS MicroTune® Spring Tensioner is available in silver or black and is compatible with all generations and models of AXiS Pedals - no modification or alteration to your pedals! Simply swap out the old for the new in just a few minutes. As with all AXiS products, the MicroTune® Spring Tensioner is made in the USA from high-quality aluminum and all parts are precision machined to exact tolerances. AXIS Quality Every Time. What's In The Box One (1) complete MicoTune® Spring Tensioner One (1) heavy-duty spring All necessary screws and tools Random AXiS sticker Other Information Warranty - all AXiS products come with a limited two (2) year warranty. LINK Longboard Sticker Replacement - is yours worn out or missing? Then get a new one LINK AXiS Care Kit - if you are looking to refresh your pedals then check out our Care Kit LINK Springs - our MicoTune® Spring Tensioner comes with a heavy-duty spring while our Standard Spring Assembly comes with a medium-duty spring. These springs are interchangeable between our spring assemblies. If you are looking for a different spring option than what comes standard, please order an AXiS Care Kit which includes both spring options.