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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.
 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 bog-down from fuel plugged vent passages
PWK Air Strikers: Directs air to main nozzle for improved signal and throttle response. |
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PWK Carburetor Dimensions
| SIZE |
A |
B |
C |
D |
| PWK 33mm |
42 |
59 |
91 |
164.3 |
| PWK 35mm |
42 |
59 |
91 |
163.3 |
| PWK 36mm |
46 |
63 |
71 |
176.6 |
| PWK 38mm |
46 |
63 |
91 |
171.6 |
| PWK 39mm |
46 |
63 |
91 |
171.6 |
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PWK Carburetors Standard Jetting
| SIZE |
MAIN JET |
SLOW JET |
JET NEEDLE |
THR.VALVE |
| STANDARD |
| PWK 28MM 29S |
#135 |
#38 |
46JH |
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
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