Recently Bull Exhausts build a new generation oval silencers for the WSP Quad of Sam Veldman.
Sam is riding in the Quad Masters class and test rider for Bull Exhausts.
With the new generation silencers the noice and performance is improved. A special killer reduce the noice level without killing the performace. Bull Exhausts made in 2024 some more special projects for a Quad and in 2025 there is planning to start a small series Quad Cross exhausts.