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J&P Cycles® Shovelhead Rocker Adjuster Kit

16 Reviews

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J&P Cycles® Shovelhead Rocker Adjuster Kit
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16 Reviews

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J&P Part: 4300425

Description for J&P Cycles® Shovelhead Rocker Adjuster Kit 

J&P Cycles® Shovelhead Rocker Adjuster Kit

• This kit is specifically engineered to reduce rocker arm clatter and oil leaks from the rocker shaft end plugs

• Contains heat treated pre-loaded spacers and seals to rebuild all four rocker shafts on Shovelheads with either solid or hydraulic lifters

• By design, this kit holds the pushrod end of the rocker arm in constant adjustment with the use of a pre-loaded spring spacer

• Kit eliminates the guesswork of rocker shaft shims and provides a clatter free arm assembly, regardless of how hot the engine is run

• Also included are four Rocker Seals which will completely seal the rocker shaft end plugs against leaks. These seals are designed to form-fit the shaft hole in the rocker box for a perfect leakproof installation

Important Product Notes

Product Specs

Sold in Units: Kit

Fitment for J&P Cycles® Shovelhead Rocker Adjuster Kit 

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Click (+) to view all compatible models

Harley-Davidson® Models

Disc Glide Willie G Special FXDG : 1983
Electra Glide Anniversary FLH : 1978
Electra Glide Classic FLHC : 1979–1982
Electra Glide Classic FLHTC : 1983
Electra Glide Classic Side Car FLHCE : 1979–1981
Electra Glide Fat Bob FLHFB : 1966–1970
Electra Glide FLB : 1966–1970
Electra Glide FLBF : 1970
Electra Glide FLFB : 1966–1969
Electra Glide FLH : 1966–1978, 1981–1984
Electra Glide FLH-74 : 1980
Electra Glide FLH-80 : 1978–1980
Electra Glide FLHB : 1966–1970
Electra Glide FLHF : 1966–1975
Electra Glide Heritage FLH : 1981
Electra Glide Police FLHP : 1981
Electra Glide Police FLHP-74 : 1979–1980
Electra Glide Police FLHP-80 : 1979–1980
Electra Glide Police FLP : 1971–1972, 1974–1975
Electra Glide Police FLPF : 1971–1972
Electra Glide Special Edition FLHX : 1984
Electra Glide Sport FLHS : 1977, 1980–1984
Electra Glide Standard FLHT : 1983
Low Rider FXS : 1977–1978, 1981–1982
Low Rider FXS-74 : 1979–1980
Low Rider FXS-80 : 1979–1980
Low Rider FXSB : 1983–1984
Sturgis Belt FXB : 1980–1982
Super Glide Electric Start FXE : 1974–1984
Super Glide Fat Bob FXEF : 1980–1984
Super Glide Fat Bob FXEF 74CI : 1979
Super Glide Fat Bob FXEF 80CI : 1979
Super Glide II FXR : 1982–1983
Super Glide Kick Start FX : 1971–1978
Super Glide Low Rider FXRS : 1982–1983
Super Glide Sport Glide FXRT : 1983
Tour Glide Classic FLTC : 1981–1983
Tour Glide FLT : 1980–1983
Wide Glide FXWG : 1980–1984

Customer Reviews for J&P Cycles® Shovelhead Rocker Adjuster Kit 

Overall Rating:
3/5 based on 16 ratings

5 by


5 by

As always perfect

0 by

broke! sent the little parts down the oil return to crankcase

5 by

Worked fine seals are great

0 by

Just as namehere stated! They shear and venture into your heads! NO BUENO.

5 by

Makes shimming much easier, will know how they hold up down the road !

0 by

mekas the rocker arm fit to tight.

5 by

Much needed kit to stop a common oil leak on Shovels. Easy install, and everything fit better than OEM....Great Job J&P !!! Hoot, Maryville, TN

5 by

Very handy and easy to use kit!I would recommend buying this product.

5 by

works well

5 by


4 by

So far it is great, not sure if adjustments are made on a warm engine or a cold one if leaks are present? Takes the guess work out of the shim qtys!

0 by

This is one of those products that look good on paper. It is critical to make sure there is enough clearance before installing these. If the clearance is too tight the fragile hardened washer will split into pieces and that is not what you want going through the internals of your beloved aluminum Shovelhead. I speak from experience.

5 by

The spacer will fit on the rocker shaft. It is a snug fit so you must oil it or lube it with some engine assembly lube, placeit on the shaft past the threads, slide the stock spacer over top and gently tap it into place. A deep well socket 11/16" works nicely.

1 by

Installation instructions are for a CCI kit. Product is manufactured by Sifton. The small spacer will not slide on the rocker shaft past the threads, this renders the kit unuseable (except for the seals). I've used the CCI kits before without any problem. The Sifton kit will not work on a 1970 Shovelhead.

5 by

The "RAM JETT ROCKER ADJUSTER KIT" is by far one of the best kits you can invest in for a Shovelhead.

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