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.