New Genuine Keihin PWK 28mm Carburetor
Producing power without compromise
The motocross world knows PWK. Keihin PWK carburetors is the dominant
carb on the factory motocross machines. Because of their great
performance they come stock on a lot of the leading brand bikes. With
these features you can take advantage of Keihin's superior performance.
PWK Features 
-
Chromed semi-flat (D) throttle valve for excellent response and more flow at high RPM.
-
Throttle bores sized to give maximum power.
-
Easy jetting with jetting parts available.
-
Quad Vents: Eliminates post jump bogging from fuel plugged vent passages
-
PWK Air Strikers: Directs air to main nozzle for improved signal and throttle response.
PWK Carburetor Dimensions
SIZE
|
A
|
B
|
C
|
D
|
|
33mm |
42 |
59 |
91 |
164.3 |
|
35mm |
42 |
59 |
91 |
163.3 |
|
36mm |
46 |
63 |
91 |
176.6 |
|
38mm |
46 |
63 |
91 |
171.6 |
|
39mm |
46 |
63 |
91 |
171.6 |
PWK Carburetor Standard Jetting
SIZE
|
Main Jet
|
Slow Jet
|
Jet Needle
|
Thr. Valve
|
|
Standard |
|
PWK 28MM 29S |
#135 |
#38 |
46JJH |
C.A. 3.5 |
|
PWK 33MM S46 |
#165 |
#52 |
48CGL |
C.A. 6.0 |
|
PWK 35MM 70R |
#160 |
#68 |
48DGK |
C.A. 6.0 |
|
PWK 38MM 71R |
#172 |
#58 |
48DEG |
C.A. 6.0 |
|
PWK 39MM 72R |
#160 |
#60 |
48DGH |
C.A. 6.0 |
|
Quadvents/Air Strikers |
|
PWK 35MM S65 |
#160 |
#48 |
48DEK |
C.A. 4.5 |
|
PWK 36MM S63 |
#165 |
#55 |
48DGJ |
C.A. 5.0 |
|
PWK 38MM S66 |
#170 |
#55 |
48DDJ |
C.A. 7.0 |
|
*Re-Jetting may be required |
