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MIKUNI HS40 SMOOTHBORE CARBURETOR

These state-of-the-art carburetors are available for custom application on most models. The HS40 SmoothBore carburetor is easy to tune, and will greatly improve starting, rideability, power and torque for any riding situation from street and touring, to custom and performance. Features include a compact, lightweight design with a high flowing 40mm SmoothBore venturi and an adjustable accelerator pump for excellent throttle response. This provides improved fuel economy and a major increase in both power and torque from idle to full throttle on both stock and modified engines. The SmoothBore carburetor comes complete with choke cable. Throttle cables, manifold, manifold adapter, clamps and air cleaner must be ordered separately. On models with "Through-The-Head Breathing" system, breather kit ZPN232224 must be used.
Note:
On late models with CV-type carburetor (Sportster 1988-up & Big Twin 1990-up) carburetor adapter (ZPN232196) must be used! On 1996 to present models late style cables must be used, or the handlebar throttle assembly must be changed to the pre-1995 model.

Instructions

Specifications

Article number Description Retail price Add to cart
234862 40mm Mikuni SmoothBore carburetor for custom building, choke cable assembly is included. $817.72
Pull cables (throttle)
Article number Description Retail price Add to cart
232211 Black vinyl, stock length thru 1995 $47.69
232208 Black vinyl, -4" thru 1995 $35.71
232206 Black vinyl, +6" thru 1995 $50.28 $16.46
722890 Clear coated braided steel, stock length thru 1995 $121.32
233972 Braided steel, +6" thru 1995 $106.00 $42.38
760405 Clear coated braided steel, +6" thru 1995 $151.13 $113.95
232037 Black vinyl, stock length 1996 to present $86.66
232038 Black vinyl, +6" 1996 to present $117.10
Push cables (idle)
Article number Description Retail price Add to cart
232212 Black vinyl, stock length thru 1995 $40.12
232207 Black vinyl, -4" thru 1995 $40.35
232205 Black vinyl, +6" thru 1995 $48.12
722892 Clear coated braided steel, stock length thru 1995 $121.32
233974 Braided steel, +6" thru 1995 $106.00 $38.80
760406 Clear coated braided steel, +6" thru 1995 $151.13 $113.95
232004 Black vinyl, stock length 1996 to present $86.66
232005 Black vinyl, +6" 1996 to present $117.18 $88.35
Carburetor accessories
Article number Description Retail price Add to cart
232196 Carburetor to manifold adapter for late models with OEM CV-carburetor $19.28
232199 Chromed air cleaner cover $170.19
232213 Air cleaner element $177.89
234869 Rubber carburetor-to-manifold mounting flange, fits 36mm and 40mm Mikuni and other carburetors with a 43mm spigot diameter, comes with carburetor mounting clamp $63.62
236047 Manifold for Evolution models $207.55
236049 Manifold for Twin Cam models $207.55
Replacement parts
Article number Description Retail price Add to cart
232200 Complete 8" long cable with knob, fits Mikuni HS40 carburetor $92.81
232244 Cap, choke cable to carb body $2.26
232245 O-Ring, choke cable to carb body $1.68 $1.36
232216 Pilot jet # 20 $8.02
232217 Pilot jet # 22.5 $8.02
232248 Pilot jet # 25 $8.02
237955 Pilot jet # 70 $8.02
237956 Main jet # 135 $8.02
232214 Main jet # 180 $8.02
232215 Main jet # 185 $8.02
232218 Main jet needle # 2.950 $23.57
232219 Main jet needle # 2.960 $21.41
232240 Jet needle clip $1.33
232237 Pilot screw $9.33
232238 Spring for pilot screw $1.48
232252 Pilot screw kit includes screw, spring washer and O-ring $15.65
232204 O-Ring, float bowl $9.18
232239 O-Ring, drain plug $3.86
232242 Float assembly $46.47
232243 Needle valve assy $45.79
232235 Gasket, top cover $6.42 $2.58
232236 Gasket, Slider cover to carb body $13.27
232201 Rebuild kit for HS40, kit includes all O-rings, gaskets, and fuel valve assembly $90.37

Recommended Retail Prices include 15.00% sales tax.

Prices exclude shipping, import duties and installation.

Prices are based on EUR to NZD interbank rates obtained daily. The interbank rate is the rate that banks trade currency to each other. These prices must be used as a guide.