The HX-10A is a die cast version of our popular HM-2A billet carburetor for Rotax kart engines. Hailed by Vroom! Magazine as the first “proper racing carburetor” for Rotax, the HM-2A posted more than 3/10ths of a second faster lap times vs stock carburetor in independent Vroom! testing. Read the full article. The HX-10A offers the same performance as the HM-2A but in a more affordable die cast version. For a larger venturi and even more top end performance, try our HX-12A 30mm version. All three carburetors offer the following benefits versus the stock Rotax carburetor:
- Fully adjustable High and Low jet, on track or off-track
- Butterfly Opening
- Racing Class Venturi / Body Design
- Racing Class Inlet Needle and Seat Design
- Pulse Pump Connection
The HX-10A, HM-2A and HX-12A are suitable for open racing where rules permit use of any carburetor. They are not permitted in Rotax World, Rotax Max Challenge and other unmodified Rotax-sponsored racing. Check your local rules for permissions.
Recommeded Initial Carburetor Settings:
Rotax MAX (Senior/Masters):
L: 1’00”
H: 1’20” – 1’25”
Rotax MAX (Junior):
L: 1’00”
H: 1’15” – 1’20”
Mini MAX:
L: 1’00”
H: 1’10” – 1’15”
Mini MAX:
L: 1’00”
H: 0’50” – 1’00”
DD2:
L: 1’00”
H: 1’30” – 1’35”
Setup Guidelines:
- Mount the carburetor to engine
- Connect pulse line to carburettor from crankcase (no need for Mikuni pulse pump)
- Set the carburetor jets to desired setting, recommend to use the QuickJet tool for accurate setting. See above recommended settings and adjustment technique.
- Draw the fuel to the carburetor
- Cover the air filter trumpets by hand and turn over engine until it fires / or remove air filter and cover choke the carburetor inlet by hand and start engine
- Go Racing!!
