Fioroni's Ultra Racing .21 Cooling Heads are designed with the input of world class drivers and made for serious racing. Available in blue or black for a variety of engines, these heads are light, durable, and excellent at keeping your engine running at optimum temperature. All but the top fins are milled with a series of holes, while the top fin is both milled with a series of fins and laser etched with the Option Team logo.

OT-HE05/BK Black/Silver head for 6 hole Nova/Rex/Top/Picco Engines shown along with OT-HE01Blue/Silver for OS Engines.

Blue/Silver Cooling Head Fits .21 O.S. Engines      Part OT-HE01

Black/Silver Cooling Head Fits .21 O.S. Engines      Part OT-HE01/BK

Blue/Silver Cooling Head  Fits .21 Sirio Engines     Part OT-HE02

Black/Silver Cooling Head  Fits .21 Sirio Engines     Part OT-HE02/BK

Blue/Silver Cooling Head  Fits .21 Picco Engines     Part OT-HE03

Black/Silver Cooling Head  Fits .21 Picco Engines     Part OT-HE03/BK

Blue/Silver Cooling Head  Fits .21 Novarossi 4 Hole   Part OT-HE04

Black/Silver Cooling Head  Fits .21 Novarossi 4 Hole   Part OT-HE04/BK

Blue/Silver Cooling Head  Fits .21 Novarossi 6 Hole   Part OT-HE05

Black/Silver Cooling Head  Fits .21 Novarossi 6 Hole   Part OT-HE05/BK