The aim of the Battlax S22 is to allow riders to experience the full extent of their bikes performance on the road (and in fairness, theyll be more than up to the odd track day as well!) Bridgestone engineers have adopted a brand new tread pattern design for several reasons: - Firstly, they have increased the Land/Sea ratio in the shoulder area, offering increased amounts of edge grip and reducing slippage towards the end of the contact area. - Secondly, the angle and alignment of tread grooves have been altered to re-distribute the working forces across the tyre. This makes for light handling, improved feedback, and optimal water drainage when riding in the wet. The rear tyre continues to use Bridgestones unique 5-Layer Compound structure, with the very softest compound found right at the edge for maximum cornering grip. The use of 5LC makes for more progressive handling, while retaining a harder central band for durability. Chemists have worked on a brand new compound mix, using fine silica molecules across the central area, which has led to a 25% increase in the amount of silica touching the road surface when compared with the S21. Silica is great for boosting grip levels in both cold and wet conditions. Fits: Harley Davidson FXDWG DYNA WIDE GLIDE 2009-2017