Trident 660

We are currently unsure where the Triumph Trident axle part number was changed during 2025.  The old axle('21-'24) appears to be present on some '25 models, but there is also a considerably shorter axle in play on the later '25 Trident models.  At this time, we believe the cut-off might be VIN BU6463(old axle), and everything over VIN BU6464(new axle, pin kit design FTRI020-PIN).  Please check with your Triumph dealer or measure the outside-to-outside of your axle.  Old axle was roughly 13" long.  New axle is less than 12" long.  This should be relatively easy to measure due to the significant difference in length.