Dennis Kirk Inc.

Stage 1 Jet Kit - 4128

Stage 1 Jet Kit - 4128

MSRP: $87.99

Price: $79.99 9% off!
Make sure this fits your ride
In Stock - 3 on Hand

Dynojet Stage 1 Jet Kit - 4128
  • Specifically for motorcycles with stock engines using stock airboxes, air filters and stock or aftermarket exhaust systems
  • Adjust to allow for the use of well-designed aftermarket exhaust systems and stock replacement air filters
  • Get better throttle response and driveability
  • Expect power increases of approximately 5 percent throughout the power range

Included Items:
(4) Main jets(2 ea. -114,118)
(2) Fuel needles
(2) Adjusting washers
(2) E-Clips
(1) Plug drill
(1) Screw

The Air Resources Board (ARB) does not permit the use of aftermarket emission-related parts that alter the air/fuel ratio of an emission-controlled vehicle. Due to these legal restrictions this part cannot be shipped to California.

Mfg #: 4128
Part #: 171904
Type Jet
Type Main Jet
Units Kit
Weight 0.25 lbs
Alternate/OEM Part Number(s):
Resources & Manuals
Fitment for Dynojet Stage 1 Jet Kit - 4128

Part 171904 fits the following machines


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