Thunderbike recognized the sporty potential of this motorcycle, stating that its engine is “extremely agile. Combined with a modern frame. The wide range of rotations provided by the variable valve timing is also very suitable for the purpose, and the 122 hp is also a great help. It is the “perfect base” for Thunderbike, who wanted to build another custom supersport project.
Now, the changes did not focus on the Revolution-Max engine, but rather on everything around it. Although the Sportster S frame can handle the demands of riding, if we want to lean and rely on the tires, the stock setup puts us in a less-than-ideal position for cornering, at least compared to sport bikes and sport nakeds.
Thunderbike opted for a 21-inch front tire with a 3.5-millimeter rim, which accommodates a 120-inch tire, the standard on most sport bikes and sport nakeds currently on the market. The result is improved maneuverability, but there’s more than just new tires. The new tire also allowed Thunderbike to fit two 340-millimeter brake discs on the front wheel, which is a set of Thunderbike GT Wheels with six by 18 inches in the rear and 3.5 by 21 inches in the front, as mentioned earlier. The two calipers are also mounted radially and the inverted fork has also been modified to accommodate the extra caliper.
The next step was to correct the seating position. The difference seems night and day here, as the front pegs of the Sportster S were set aside in favor of rear sets, which is a Thunderbike kit and basically transforms the way the bike rides. From low lean and inside the bike to dynamic and on top of it. The pegs are also complemented by the redesigned seat, which has also been altered by Thunderbike to provide greater support to the rider. Additionally, a flat handlebar has been installed to match everything.
Finally, other parts from the Thunderbike SPS series were added, including the radiator cover, engine cover, clutch cover, shock cover, headlight cover, grips, indicators, and much more.
For more information, you can check the official Thunderbike website.
