JASIL crankshaft (14mm Kobo) for Hercules MK 4 50 / Supra 4 Enduro GP // Sachs 501/4 AKF / 506/4 AKF

Top Racing is a brand of the Portuguese company Jasil, founded in 1950 as a metalworking company and increasingly involved in the two-wheeler sector since the end of the 20th century. Top Racing products are designed primarily for use in racing. Top Racing manufactures a wide range of products for scooters, motorcycles and mopeds. Best known are the high quality crankshafts in the significant black and yellow boxes.