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The focus isn’t just on the engine but on changing things around.
The Sportster S has a punchy engine and a cool frame. Thunderbike loves it, with 122 horsepower to play with. Perfect for their customizing touch. But, they didn’t tinker much with the engine itself.
Instead, they went for a 21-inch front tire on a 3.5-millimeter rim. It fits a 120-inch tire, like what sports bikes use. This not only makes handling better but also lets Thunderbike add two 340-millimeter brake discs on the front wheel. These are part of Thunderbike GT Wheels, sized six by 18 inches at the back and 3.5 by 21 inches at the front.
The front pegs were ditched for rear sets, changing how the bike feels to ride. It’s not just about looks – Thunderbike wanted a more dynamic ride. They also tweaked the seat to give better support and added a flat bar to match.
Thunderbike also threw in some parts from their SPS series – radiator cover, engine cover, clutch cover, shock absorber cover, headlight cover, grips, indicators, and more.
So, Thunderbike turned the Sportster S into a personalized supersport beast. It’s got power, agility, and looks – a Thunderbike trademark in customizing motorcycles.