Athena launches the race kit for Yahama Minarelli Horizontal engine
Alonte (VI), Italia, March 2023
Following the success achieved with the race kit for Yamaha-Minarelli Vertical engines, Athena, who has been an industry leader for 50 years in high-performance motorcycle, scooter and moped spare parts, releases the big bore racing kit for Yamaha-Minarelli Horizontal air-cooled engines, which equip legendary scooters such as Aprilia Rally, Malaguti F10, F12, F15 and Yamaha Jog.
Athena’s R&D team has brought the innovative technical solutions (patent pending) also on this kit, consisting of the cylinder kit and coordinating accessories that, together, will reach performance levels never achieved before.
Cylinder Kit
The 47.6 mm Big Bore Cylinder Kit for Yamaha-Minarelli Horizontal engines is the most powerful of its kind. The cylinder ports are revolutionized by a new fixing system to the crankcases (patent pending) with special dedicated bolts, replacing the normal studs. The exhaust ports are thus redesigned, for an increase in the engine performance, in terms of torque and power. The 1.5 mm protrusion of the cylinder head profile allows a perfect centering of the cylinder and a further improved sealing capacity. Finally, the Athena racing crankshaft, available with ø10 mm and ø12 mm piston pins, is forged in steel and has lightened counterweights with aluminum inserts, for improved balance at any speed.
Ignition kit
Developed in collaboration with Selettra, the new variable advance ignition kit has a control unit with high calculation capacity and it is perfect for the management of speed acceleration, with two selectable race mappings.
Exhaust kit
The racing exhaust kit has been designed to make the most of the air-cooled Horizontal Minarelli engine. The exhaust system is manufactured with precise craftsmanship and treated to handle the smallest particulars.
The kit is complete with the components designed for the intake unit: three air filters of different shapes, Race ready carburetors (one ø24 mm with a Powerjet system and one ø28 mm) and a Big Valve Kit for engine supercharging.