
Keihin Pilot Jet N424-21
Quantity
Details
Description
Keihin N424-21 pilot and slow jets meter fuel through the idle and low-throttle circuit. The family is 28 mm long, with a 5.9 mm thread diameter and 4.9 mm head diameter, and this listing offers 19 sizes from 035 to 080.
The standard non-Air-Striker PWK33 configuration uses the #52 member, MPN N424-21-52, at reference 10. Select the N424-21 series and size specified for the carburetor or match the removed jet; #52 is not universal across PWK models or configurations.
Notice
Before You Order — Measure Your Jet First
Remove the jet from your carb and physically measure it. If it does not dimensionally match this listing, this is not the correct jet — do not buy it.
Buyer is solely responsible for confirming the correct jet size before purchasing. Do not rely on year/make/model fitment guides — they cannot be guaranteed 100% accurate.
All jet sales are final. No returns or exchanges — no exceptions.
