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 |
